TEXAS INSTRUMENTS SN65HVD230 SN65HVD231 SN65HVD232 3.3-V CAN TRANSCEIVERS handbook
Contents
1. 0 POWER RATING D 725 mW 5 8 mW C 464 mW 377 mW t This is the inverse of the junction to ambient thermal resistance when board mounted and with no air flow PACKAGE recommended operating conditions emn Sneve IA Voltage at any bus terminal common mode Vic Xoltage at any bus terminal separately V 21 _ 0248 Input voltage for standby or sleep V Rs 0 75 vec ERE 774 hight leveli output utrent OH 8 Driver 0 8 Low level output eurent ee ft Operating free air temperature TA eee free air temperature The algebraic convention in which the least positive most negative limit is designated as minimum is this data sheet 49 5 INSTRUMENTS 6 www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 driver electrical characteristics over recommended operating conditions unless otherwise noted PARAMETER TEST CONDITIONS MIN UNIT F 0 V ominant See Figure 1 and Figure 3 Vi 3 V CANH ecessive See Figure 1 and Figure 3 CANL Vi 20V See Figure 1 Dominant Differential output 0 See Figure 2 1 2 2 voltage Vi 23V See Figure 1 120 0 R ecessive 3 V No load 05 02 0 05 2V Low level input current Vi 0 8 V VCANH 2 V VCANL 7 V Output capacitance See receiver2. CANL through 100 Q see Figure 7 25 V to 25 V Input voltage range Vj D or R 0 5 V to Vcc 0 5 V Electrostatic discharge Human body model see Note 2 CANH CANL GND 16 kV 155 22142558 4 kV Charged device model see Note 3 Allpins 1 kV Continuous total power dissipation See Dissipation Rating table Storage temperature range Tstg Locker Qc ce 65 C to 150 C Lead temperature 1 6 mm 1 16 inch from case for 10 seconds 260 C 1 Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied Exposure to absolute maximum rated conditions for extended periods may affect device reliability NOTES 1 All voltage values except differential I O bus voltages are with respect to network ground terminal 2 Tested in accordance with JEDEC Standard 22 Test Method A114 A 3 Tested in accordance with JEDEC Standard 22 Test Method C101 DISSIPATION RATING TABLE TA lt 25 C DERATING FACTOR TA 70 C TA 85 C POWER RATING 25
3. 150 200 Figure 25 17 SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 TYPICAL CHARACTERISTICS REFERENCE VOLTAGE vs REFERENCE CURRENT Vref Reference Voltage V lref Reference Current pA Figure 26 APPLICATION INFORMATION This application provides information concerning the implementation of the physical medium attachment layer in a CAN network according to the ISO 11898 standard It presents a typical application circuit and test results as well as discussions on slope control total loop delay and interoperability in 5 V systems introduction ISO 11898 is the international standard for high speed serial communication using the controller area network CAN bus protocol It supports multimaster operation real time control programmable data rates up to 1 Mbps and powerful redundant error checking procedures that provide reliable data transmission It is suited for networking intelligent devices as well as sensors and actuators within the rugged electrical environment of a machine chassis or factory floor The SN65HVD230 family of 3 3 V CAN transceivers implement the lowest layers of the ISO OSI reference model This is the interface with the physical signaling output of the CAN controller of the Texas Instruments TMS320Lx240x 3 3 V DSPs as illustrated in Figure 27 9 TEXAS INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD
4. Standby SNesHvD230 Vins Voc SN65HVD231 V Rs Voc D at Voc All devices 5 t All typical values are at 25 C and with a 3 3 V supply Short circuit output current driver switching characteristics over recommended operating conditions unless otherwise noted SN65HVD230 and SN65HVD231 TEST PARAMETER CONDITIONS UNIT V Rs 20 V 35 85 Propagation delay time low to high level output Rs with 10 to ground Rs with 100 kO to ground V Rs 20 V tpH_ Propagation delay time high to low level output Rs with 10 to ground 130 180 Rs with 100 kO to ground 870 V Rs 20 V C 50 pF tsk p Pulse skew tPHL tPLHI Rg with 10 kQ to ground 2 Figure Rs with 100 to ground tr Differential output signal rise time ov tf Differential output signal fall time SEV 40 55 80 tr Differential output signal rise time 80 120 160 ns n Rs with 10 kQ to ground tf Differential output signal fall time a IUS 1 1 Differential output signal rise time Rs with 100 kO to ground t Differential output signal fall time 49 5 INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 driver switching characteristics over recommended operating conditions unless otherwise noted SN65HVD232 PARAMETER TEST CONDITIONS MIN UNIT tPLH Propagation delay time low to high level output 35 8
5. pin 8 the babbling idiot protection of the HVD230 Occasionally a runaway CAN controller unintentionally sends messages that completely tie up the bus what is referred to in CAN jargon as a babbling idiot When this occurs the DSP can engage the isten only standby mode to disengage the driver and release the bus even when access to the CAN controller has been lost When the driver circuit is deactivated its outputs default to a high impedance state sleep mode of the HVD231 The unique difference between the SN65HVD230 and the SN65HVD231 is that both driver and receiver are switched off in the SN65HVD231 when a logic high is applied to pin 8 The device remains in a very low power sleep mode until the circuit is reactivated with a logic low applied to pin 8 While in this sleep mode the bus pins are in a high impedance state while the D and R pins default to a logic high loop propagation delay 24 Transceiver loop delay is a measure of the overall device propagation delay consisting of the delay from the driver input to the differential outputs plus the delay from the receiver inputs to its output The loop delay of the transceiver displayed in Figure 35 increases accordingly when slope control is being used This increased loop delay means that the total bus length must be reduced to meet the CAN bit timing requirements of the overall system The loop delay becomes 100 ns when employing slope control with a 10
6. 2001 REVISED JUNE 2002 PARAMETER MEASUREMENT INFORMATION Dominant CANH 3 CANH Recessive 223V VOL CANL 10 CANL Figure 3 Driver Output Voltage Definitions 600 gt 5 0 Vo see Note Signal Generator see Note A Rs 0 to 100 for SN65HVD230 SN65HVD231 N A for SN65HVD232 Input 1 5 V 0v tPLH 3 tPHL 90 Output 222 V 10 VOD R NOTES A The input pulse is supplied by a generator having the following characteristics PRR lt 500 kHz 50 duty cycle tp lt 6 ns tt lt 6 ns Zo 50 Q includes probe and jig capacitance Figure 4 Driver Test Circuit and Voltage Waveforms _ VCANH VCANL VCANH Vic 2 Vo Figure 5 Receiver Voltage and Current Definitions 49 5 INSTRUMENTS 10 www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 PARAMETER MEASUREMENT INFORMATION Output Signal Generator see Note A zm 15 see Note B Tl 2 9V Input 2 2V 1 5 V I tpHL Output 1 3V 10 VoL tt u NOTES The input pulse is supplied by a generator having the following characteristics PRR lt 500 kHz 50 duty cycle
7. bps bits per second TMS320Lx240x is a trademark of Texas Instruments PRODUCTION DATA information is current as of publication date Products conform to specifications per the terms of Texas Instruments 2 standard warranty Production processing does not necessarily include uf testing of all parameters Please be aware that an important notice concerning availability standard warranty and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet Copyright 2002 Texas Instruments Incorporated EXAS INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 DESCRIPTION The SN65HVD230 SN65HVD231 and SN65HVD232 controller area network CAN transceivers are designed for use with the Texas Instruments TMS320Lx240x 3 3 V DSPs with CAN controllers or with equivalent devices They are intended for use in applications employing the CAN serial communication physical layer in accordance with the ISO 11898 standard Each CAN transceiver is designed to provide differential transmit capability to the bus and differential receive capability to a CAN controller at speeds up to 1 Mbps Designed for operation in especially harsh environments these devices feature cross wire protection loss of ground and overvoltage protection overtemperature protection as well as wide common mode range The transceiver i
8. ns 55 40 0 25 70 85 125 TA Free Air Temperature Figure 19 DRIVER HIGH TO LOW PROPAGATION DELAY TIME vs FREE AIR TEMPERATURE 55 40 0 25 70 85 125 tpHL Driver High to Low Propagation Delay Time ns TA Free Air Temperature Figure 21 49 5 INSTRUMENTS www ti com tpLH Driver Low to High Propagation Delay Time ns lo Driver Output Current mA DRIVER LOW TO HIGH PROPAGATION DELAY TIME vs FREE AIR TEMPERATURE 50 40 30 20 10 TYPICAL CHARACTERISTICS 1000 950 900 SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 DRIVER HIGH TO LOW PROPAGATION DELAY TIME vs FREE AIR TEMPERATURE 850 800 750 tpHL Driver High to Low Propagation Delay Time ns 700 40 0 25 70 85 125 TA Free Air Temperature C Figure 23 DIFFERENTIAL DRIVER OUTPUT FALL TIME VS SOURCE RESISTANCE Rg 55 40 0 25 70 85 125 55 TA Free Air Temperature Figure 22 DRIVER OUTPUT CURRENT vs SUPPLY VOLTAGE o a u 5 5 2 5 t o 5 a 1 5 2 2 5 3 3 5 4 0 Vcc Supply Voltage V Figure 24 49 5 INSTRUMENTS www ti com 50 100 Rg Source Resistance
9. this sleep mode until the circuit is reactivated by a low logic level on pin 8 The Vref pin 5 on the SN65HVD230 and SN65HVD231 is available as a 2 voltage reference The SN65HVD232 is a basic CAN transceiver with no added options pins 5 and 8 are NC no connection AVAILABLE OPTIONS LOW INTEGRATED SLOPE PART NUMBER POWER MODE CONTROL Vref PIN MARKED AS SN65HVD230 Standby mode Yes Yes VP230 SN65HVD231 Sleep mode Yes Yes 40 C to 85 C VP231 SN65HVD232 No standby or sleep mode VP232 9 TEXAS INSTRUMENTS 2 www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 Function Tables DRIVER SN65HVD230 SN65HVD231 INPUT D BUS STATE high level L low level X irrelevant indeterminate Z high impedance DRIVER SN65HVD232 INPUT D BUS STATE H high level L low level Z high impedance RECEIVER SN65HVD230 DIFFERENTIAL INPUTS Rs woo Xx t lt lt X H high level L low level X irrelevant indeterminate RECEIVER SN65HVD231 DIFFERENTIACINPUTS ns Wn lt 12V 3 5 wmv fe ee high level L low level X irrelevant indeterminate RECEIVER SN65HVD232 DIFFERENTIAL INPUTS OUTPUT R H high level L low level X irrelevant indeterminate 49 5 INSTRUM
10. ty lt 6 ns 1 lt 6 ns Zo 50 Q B includes probe and jig capacitance Figure 6 Receiver Test Circuit and Voltage Waveforms Pulse Generator 15 us Duration 1 Duty Cycle Figure 7 Overvoltage Protection 49 5 INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 PARAMETER MEASUREMENT INFORMATION Table 1 Receiver Characteristics Over Common Mode With V ps 1 2 V Vcc 10 0v 15 T Generator PRR 150 kHz Signal 50 Duty Cycle tr tf lt 6 ns Zo 50 Q Vcc V Rs 1 5 V x WAKE Output 1 3 Figure 8 twake Test Circuit and Voltage Waveforms 5 TEXAS INSTRUMENTS 12 www ti com 511053460 MARCH 2001 PARAMETER MEASUREMENT INFORMATION 0 0 10 or 5 mdr a 100 5 gg n 1222 600 1 CANL R l Vo T 15 pF 20 o R inier Y Vcc Vi 5096 50 p 1 2 4 gt t LOOP1 5096 5096 VOL Figure 9 t Test Circuit and Voltage Waveforms SN65HVD230 SN65HVD231 SN65HVD232 REVISED JUNE 2002 NOTE All Vj input pulses are supplied by a generator having the following characteristics or tt 6 ns Pulse Repetition Rate PRR 125 kHz 50 duty cycle 9 TEXAS INSTRUMENTS www
11. 14 RECEIVER LOW TO HIGH PROPAGATION DELAY TIME vs FREE AIR TEMPERATURE tpLH Receiver Low to High Propagation Delay Time ns 40 0 25 70 85 125 TA Free Air Temperature Figure 16 DOMINANT VOLTAGE Vop vs FREE AIR TEMPERATURE Vop Dominant Voltage V 40 0 25 70 85 125 TA Free Air Temperature C Figure 15 RECEIVER HIGH TO LOW PROPAGATION DELAY TIME vs FREE AIR TEMPERATURE tpHL Receiver High to Low Propagation Delay Time ns 40 0 25 70 85 125 TA Free Air Temperature C Figure 17 49 5 INSTRUMENTS www ti com 15 SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 16 tpLH Driver Low to High Propagation Delay Time ns tpLH Driver Low to High Propagation Delay Time ns TYPICAL CHARACTERISTICS DRIVER LOW TO HIGH PROPAGATION DELAY TIME VS FREE AIR TEMPERATURE 55 40 0 25 70 85 125 TA Free Air Temperature C Figure 18 DRIVER LOW TO HIGH PROPAGATION DELAY TIME VS FREE AIR TEMPERATURE 55 40 0 25 70 85 125 TA Free Air Temperature C Figure 20 DRIVER HIGH TO LOW PROPAGATION DELAY TIME vs FREE AIR TEMPERATURE Driver High to Low Propagation Delay Time
12. 232 SLOS346G MARCH 2001 REVISED JUNE 2002 APPLICATION INFORMATION ISO 11898 Specification TMS320Lx2403 6 7 Application Specific Layer Logic Link Control Data Link Layer Medium Access Control Embedded CAN Controller Physical Signaling Physical Physical Medium Attachment Layer Medium Dependent Interface SN65HVD230 CAN Bus Line Figure 27 The Layered ISO 11898 Standard Architecture The SN65HVD230 family of CAN transceivers are compatible with the ISO 11898 standard this ensures interoperability with other standard compliant products application of the SN65HVD230 Figure 28 illustrates a typical application of the SN65HVD230 family The output of a DSP s CAN controller is connected to the serial driver input pin D and receiver serial output pin R of the transceiver The transceiver is then attached to the differential bus lines at pins CANH and CANL Typically the bus is a twisted pair of wires with a characteristic impedance of 120 Q in the standard half duplex multipoint topology of Figure 29 Each end of the bus is terminated with 120 Q resistors in compliance with the standard to minimize signal reflections on the bus 9 TEXAS INSTRUMENTS www ti com 19 SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 120 Q SN65HVD230 231 232 3 3 V transceivers provide the interface between TMS320Lx2403 6 7 CAN DSPs andthe differential bus line and
13. 35 TEXAS SN65HVD230 SN65HVD231 INSTRUMENTS SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 3 3 V CAN TRANSCEIVERS FEATURES APPLICATIONS Operates With a 3 3 V Supply Motor Control Low Power Replacement for the PCA82C250 Industrial Automation Footprint Basestation Control and Status Bus Pin ESD Protection Exceeds 16 kV HBM Robotics High Input Impedance Allows for 120 Nodes Automotive 2 UPS Control Controlled Driver Output Transition Times for Improved Signal Quality on the SN65HVD230 SN65HVD230D Marked as VP230 and SN65HVD231 SN65HVD231D Marked as VP231 Unpowered Node Does Not Disturb the Bus TOP VIEW Compatible With the Requirements of the ISO 11898 Standard Low Current SN65HVD230 Standby Mode 370 LA Typical Low Current SN65HVD231 Sleep Mode nA Typical SN65HVD232D Marked as VP232 Designed for Signaling Ratest up to TOP VIEW 1 Megabit Second Mbps Thermal Shutdown Protection Open Circuit Fail Safe Design Glitch Free Power Up and Power Down Protection for Hot Plugging Applications LOGIC DIAGRAM POSITIVE LOGIC SN65HVD230 SN65HVD231 Logic Diagram Positive Logic Vret NC No internal connection SN65HVD232 Logic Diagram Positive Logic 4 7 6 R CANL t The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units
14. 5 tPHL Propagation delay time high to low level output 70 120 35 ns Mp Pulse skew pp PLH wa tr Differential output signal rise time 25 50 100 tf Differential output signal fall time 40 55 80 receiver electrical characteristics over recommended operating conditions unless otherwise noted PARAMETER TEST CONDITIONS MIN UNIT Positive going input threshold voltage eT See Table 1 Negative going input threshold voltage 500 650 1 70 900 0 Vhys Hysteresis voltage ViT4 VIT VoH High level output voltage 6 V lt Vip lt 500 mV lO 8 mA See Figure 5 VoL Low level output voltage 900 mV lt Vip lt 6 V lo 8 mA See Figure 5 Vip 27V 100 250 VIH 7V 0 Other input at 0 V 100 350 Bus input current Vin 2 V D 3V 200 30 2 2V Voc 20V 100 20 2 6 50 Pin to ground V D 3V Ci CANH CANL input capacitance 0 4 4 6 0 5 V 4 Pin to pin Differential input capacitance V 0 4 sin 4E6nt 0 5 V NER NM Raiff Differential input resistance Pin to pin 2 3 V 40 100 0 RI CANH CANL input resistance 9 85 80 CC Supply current t All typical values are at 25 C and with 3 3 V supply receiver switching characteristics over recommended operating conditions unless otherwise noted tPLH Propagation delay time low to high level output tPHL Propagation delay time high to low level output
15. ENTS www ti com E SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 Function Tables Continued TRANSCEIVER MODES SN65HVD230 SN65HVD231 V Rs gt 0 75 Standby 10 to 100 to ground Slope control V Rs lt 1V High speed no slope control Terminal Functions UM DESCRIPTION NAME NO aiia DESCRIPTION NAME NO CANL 6 Low bus output CANH 7 High bus output SN65HVD230 SN65HVD231 SN65HVD232 49 5 INSTRUMENTS 4 www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 equivalent input and output schematic diagrams CANH and CANL Inputs D Input Vcc e Vcc 16V 110 9 ko 100 ko e 45 gt Input 1kQ Input 9 9 Kt 20V 9 ko 9v e l CANH CANL Outputs R Output Vcc 16V 4 4t 5 50 e Output e Output 9v 20 V 9 TEXAS INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 maximum ratings over operating free air temperature see Note 1 unless otherwise noted t Supply voltage range VOC 0 3 Vto 6 V Voltage range at any bus terminal CANH CANL 4 V to 16 V Voltage input range transient pulse CANH
16. are designed to transmit data at signaling rates APPLICATION INFORMATION Electronic Control Unit ECU TMS320Lx2403 6 7 CAN Controller CANTX IOPC6 CANRX IOPC7 D R SN65HVD230 CANH CANL CAN Bus Line Figure 28 Details of a Typical CAN Node ECU ECU ECU 1 2 n CANH CAN Bus Line CANL Figure 29 Typical CAN Network up to 1 Mbps as defined by the ISO 11898 standard features of the SN65HVD230 SN65HVD231 and SN65HVD232 The SN65HVD230 231 232 are pin compatible but not functionally identical with one another and depending upon the application may be used with identical circuit boards These transceivers feature 3 3 V operation and standard compatibility with signaling rates up to 1 Mbps and also offer 16 kV HBM ESD protection on the bus pins thermal shutdown protection bus fault protection and open circuit receiver failsafe The fail safe design of the receiver assures a logic high at the receiver output if the bus wires become open circuited If a high ambient operating environment temperature or excessive output current result in thermal shutdown the bus pins become high impedance while the D and R pins default to a logic high 20 9 TEXAS INSTRUMENTS www ti com 120 Q SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 APPLICATION INFORMATION features of the SN65HVD230 SN65HVD231 and SN65HVD232 continued The bus p
17. els 2 and 3 display CANH and CANL respectively with their recessive bus states overlaying each other to clearly display the dominant and recessive CAN bus states Channel 4 is the receiver output waveform of the competitor X250 9 TEXAS INSTRUMENTS www ti com 27 SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 MECHANICAL DATA D R PDSO G PLASTIC SMALL OUTLINE PACKAGE 14 PINS SHOWN 0 050 1 27 0 020 0 51 dir 0 014 0 35 0 010 0 25 8 0 008 0 20 0 157 4 00 0 244 6 20 0 228 5 80 0 150 3 81 l en Plane Y 0 010 0 25 7 0 044 1 12 0 016 0 40 Seating 0 010 0 25 Z 0 004 0 10 0 069 1 75 MAX 0 004 0 10 PINS DIM A MAX A MIN 4040047 D 10 96 NOTES A Alllinear dimensions are in inches millimeters This drawing is subject to change without notice Body dimensions do not include mold flash or protrusion not to exceed 0 006 0 15 Falls within JEDEC MS 012 9 TEXAS INSTRUMENTS 28 www ti com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries TI reserve the right to make corrections modifications enhancements improvements and other changes to i
18. ins are also maintained in a high impedance state during low Vcc conditions to ensure glitch free power up and power down bus protection for hot plugging applications This high impedance condition also means that an unpowered node does not disturb the bus Transceivers without this feature usually have a very low output impedance This results in a high current demand when the transceiver is unpowered a condition that could affect the entire bus operating modes Rs pin 8 of the SN65HVD230 and SN65HVD231 provides for three different modes of operation high speed mode slope control mode and low power mode high speed The high speed mode can be selected by applying a logic low to Rs pin 8 The high speed mode of operation is commonly employed in industrial applications High speed allows the output to switch as fast as possible with no internal limitation on the output rise and fall slopes The only limitations of the high speed operation are cable length and radiated emission concerns each of which is addressed by the slope control mode of operation If the low power standby mode is to be employed in the circuit direct connection to a DSP output pin can be used to switch between a logic low level lt 1 V for high speed operation and the logic high level gt 0 75 Vcc for standby Figure 30 shows a typical DSP connection and Figure 31 shows the HVD230 driver output signal in high speed mode on the CAN bus IOPF6 TMS320LF2406
19. kQ resistor and 500 ns with a 100 kQ resistor Therefore considering that the rule of thumb propagation delay of typical bus cable is 5 ns m slope control with the 100 kO resistor decreases the allowable bus length by the difference between the 500 ns max loop delay and the loop delay with no slope control 70 7 ns This equates to 500 70 7 ns 5 ns or approximately 86 m less bus length This slew rate bus length trade off to reduce electromagnetic interference to adjoining circuits from the bus can also be solved with a quality shielded bus cable 9 TEXAS INSTRUMENTS www ti com APPLICATION INFORMATION itun 2 006545 LI es Driver Input se sjeel bede sheds seeds shades ieot bedes benie lido SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 Figure 35 70 7 ns Loop Delay Through the HVD230 With Rs 0 9 TEXAS INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 APPLICATION INFORMATION interoperability with 5 V CAN systems It is essential that the 3 3 V HVD230 family performs seamlessly with 5 V transceivers because of the large number of 5 V devices installed Figure 36 displays a test bus of a 3 3 V node with the HVD230 and three 5 V nodes one for each of Tl s SN65LBC031 and UC5350 transceivers and one using a competitor X250 transceiver Tektronix 784D Tektr
20. ment thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties conditions limitations and notices Reproduction of this information with alteration is an unfair and deceptive business practice TI is not responsible or liable for such altered documentation Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated product or service and is an unfair and deceptive business practice is not responsible or liable for any such statements Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2002 Texas Instruments Incorporated
21. ns tsk p Pulse skew tp HL tP LH I ns ns tr Output signal rise time tf Output signal fall time 49 5 INSTRUMENTS 8 www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 device switching characteristics over recommended operating conditions unless otherwise noted TEST PARAMETER CONDITIONS MIN MAX UNIT Rs with 10 to ground See Figure 9 24 175 Rs with 100 kQ to ground See Figure 9 V Rs 0 V See Figure 9 100 135 H Total loop delay driver input to receiver output recessive to dominant Total loop delay driver input to receiver output dominant to recessive Rs with 10 to ground See Figure 9 02155 185 185 Rs with 100 to ground See Figure 9 device control pin characteristics over recommended operating conditions unless otherwise noted SN65HVD230 wake up time from standby mode with Rg Lemos psc SN65HVD231 wake up time from sleep mode with Rs fe meme s imucwentrhgesped _ 9 i values at 25 and with a 3 3 V supply PARAMETER MEASUREMENT INFORMATION Vcc 0 3 600 Figure 1 Driver Voltage and Current Definitions 167 Q 0v 600 eo 2 V lt VTEST lt 7 V 1 Figure 2 Driver 49 5 INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH
22. nterfaces the single ended CAN controller with the differential CAN bus found in industrial building automation and automotive applications It operates over a 2 V to 7 V common mode range on the bus and it can withstand common mode transients of 25 V On the SN65HVD230 and SN65HVD231 pin 8 provides three different modes of operation high speed slope control and low power modes The high speed mode of operation is selected by connecting pin 8 to ground allowing the transmitter output transistors to switch on and off as fast as possible with no limitation on the rise and fall slopes The rise and fall slopes can be adjusted by connecting a resistor to ground at pin 8 since the slope is proportional to the pin s output current This slope control is implemented with external resistor values of 10 kO to achieve a 15 V us slew rate to 100 kO to achieve a 2 V us slew rate See the Application Information section of this data sheet The circuit of the SN65HVD230 enters a low current standby mode during which the driver is switched off and the receiver remains active if a high logic level is applied to pin 8 The DSP controller reverses this low current standby mode when a dominant state bus differential voltage gt 900 mV typical occurs on the bus The unique difference between the SN65HVD230 and the SN65HVD231 is that both the driver and the receiver are switched off in the SN65HVD231 when high logic level is applied to pin 8 and remain in
23. o a DSP 9 TEXAS INSTRUMENTS 22 www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 APPLICATION INFORMATION DRIVER OUTPUT SIGNAL SLOPE vs SLOPE CONTROL RESISTANCE 25 o 20 ES gt 3 o 15 o 8 5 10 9 5 5 0 0 47 6 8 10 15 22 33 47 68 100 Slope Control Resistance Figure 33 HVD230 Driver Output Signal Slope vs Slope Control Resistance Value Tek Run 25011545 Sample 1 UU v 1 00 v Figure 34 Typical SN65HVD230 250 kbps Output Pulse Waveforms With Slope Control 9 TEXAS INSTRUMENTS www ti com 23 SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 APPLICATION INFORMATION standby mode listen only mode of the HVD230 If a logic high gt 0 75 Vcc is applied to pin 8 in Figures 30 and 32 the circuit of the SN65HVD230 enters a low current listen only standby mode during which the driver is switched off and the receiver remains active In this listen only state the transceiver is completely passive to the bus It makes no difference if a slope control resistor is in place as shown in Figure 32 The DSP can reverse this low power standby mode when the rising edge of a dominant state bus differential voltage gt 900 mV typical occurs on the bus The DSP sensing bus activity reactivates the driver circuit by placing a logic low lt 1 2 V
24. onix Trigger Oscilloscope HFS 9003 Input Pattern Tektronix Generator _ P6243 Single Ended e Probes One Meter Belden Cable 82841 22211111 E SN65HVD230 SN65LBC031 UC5350 Competitor X250 1200 120 Q HP E3516A HP E3516A 5 V Power Supply 3 3 V Power Supply Figure 36 3 3 V 5 V CAN Transceiver Test Bed 5 TEXAS INSTRUMENTS 26 www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 APPLICATION INFORMATION Sample Run 25 0 575 Input Output omma Li 1 v 1 00 V Cha 2 00 V j kiaii cata Figure 37 HVD230 s Input CAN Bus and X250 s RXD Output Waveforms Figure 37 displays the HVD230 s input signal the CAN bus and the competitor X250 s receiver output waveforms The input waveform from the Tektronix HFS 9003 Pattern Generator in Figure 36 to the HVD230 is a 250 kbps pulse for this test The circuit is monitored with Tektronix P6243 1 GHz single ended probes in order to display the CAN dominant and recessive bus states Figure 37 displays the 250 kbps pulse input waveform to the HVD230 on channel 1 Chann
25. or TMS320LF2407 Figure 30 Rs Pin 8 Connection to a TMS320LF2406 07 for High Speed Standby Operation 9 TEXAS INSTRUMENTS www ti com 21 SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 APPLICATION INFORMATION high speed continued Tek Run 500575 sample 4 Driver Output E E ESH e EE NRZ Data GE 500 200 084 800 Figure 31 Typical High Speed SN65HVD230 Output Waveform Into 60 Load slope control Electromagnetic compatibility is essential in many applications using unshielded bus cable to reduce system cost To reduce the electromagnetic interference generated by fast rise times and resulting harmonics the rise and fall slopes of the SN65HVD230 SN65HVD231 driver outputs can be adjusted by connecting a resistor from Rs pin 8 to ground or to a logic low voltage as shown in Figure 32 The slope of the driver output signal is proportional to the pin s output current This slope control is implemented with an external resistor value of 10 to achieve a 15 V us slew rate up to 100 to achieve a 2 0 V us slew rate as displayed in Figure 33 Typical driver output waveforms from a pulse input signal with and without slope control are displayed in Figure 34 A pulse input is used rather than NRZ data to clearly display the actual slew rate TMS320LF2406 or TMS320LF2407 Figure 32 Slope Control Standby Connection t
26. ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 14 Icc Supply Current RMS mA Ij Bus Input Current pA TYPICAL CHARACTERISTICS SUPPLY CURRENT RMS LOGIC INPUT CURRENT PIN D vs vs FREQUENCY INPUT VOLTAGE 33 5 32 2 S 31 1 4 9 30 5 6 o 29 CS 9 28 8 10 27 12 26 14 25 16 0 250 500 750 1000 1250 1500 1750 2000 0 06 11 16 21 26 31 36 f Frequency kbps Vj Input Voltage V Figure 10 Figure 11 BUS INPUT CURRENT DRIVER LOW LEVEL OUTPUT CURRENT vs vs BUS INPUT VOLTAGE LOW LEVEL OUTPUT VOLTAGE 400 160 lt 300 140 5 200 120 o 100 amp 100 5 0 80 100 60 200 8 40 300 I 20 400 0 7 6 4 3 10 1 3 4 6 7 8 10 11 12 0 2 3 4 Vj Bus Input Voltage V VO CANL Low Level Output Voltage V Figure 12 Figure 13 49 5 INSTRUMENTS www ti com SN65HVD230 SN65HVD231 SN65HVD232 SLOS346G MARCH 2001 REVISED JUNE 2002 TYPICAL CHARACTERISTICS DRIVER HIGH LEVEL OUTPUT CURRENT vs HIGH LEVEL OUTPUT VOLTAGE 120 100 c 5 o 80 5 8 60 2 o 40 2 80020 0 0 5 1 1 5 2 2 5 3 5 VO CANH High Level Output Voltage V Figure
27. ts products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subjectto Tl s terms and conditions of sale supplied at the time of order acknowledgment TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty Except where mandated by government requirements testing of all parameters of each product is not necessarily performed TI assumes no liability for applications assistance or customer product design Customers are responsible for their products and applications using TI components To minimize the risks associated with customer products and applications customers should provide adequate design and operating safeguards TI does not warrant or represent that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in which TI products or services are used Information published by TI regarding third party products or services does not constitute a license from to use such products or services or a warranty or endorse
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TEXAS INSTRUMENTS SN65HVD230 SN65HVD231 SN65HVD232 3.3 V CAN TRANSCEIVERS handbook