MAXIM MAX1489E handbook(1)
Contents
1. INCHES MILLIMETERS MIN MAX MIN MAX Ee e 0 15 S eh lt eA fl eB INCHES MILLIMETERS Plastic DIP i MIN MAX MIN MAX PLASTIC DUAL IN LINE PACKAGE 0 300 in MAXIM 7 JI68bLXVW MAX1489E 15kV ESD Protected Quad Low Power RS 232 Line Receiver Package Information continued The package drawing s in this data sheet may not reflect the most current specifications For the latest package outline information go to www maxim ic com packages INCHES MILLIMETERS MIN MAX MIN MAX ch 0 101mm SE 0 004in L c L Si INCHES MILLIMETERS Narrow SO MIN MAX MIN MAX SMALL OUTLINE PACKAGE 0 150 in Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product No circuit patent licenses are implied Maxim reserves the right to change the circuitry and specifications without notice at any time 8 Maxim Integrated Products 120 San Gabriel Drive Sunnyvale CA 94086 408 737 7600 2003 Maxim Integrated Products Printed USA MAXIM is a registered trademark of Maxim Integrated Products2. 19 0426 Rev 1 2 03 MA AALS 15kV ESD Protected Quad Low Power RS 232 Line Receiver __ General Description The MAX1489E quad low power line receiver is designed for EIA TIA 232 EIA TIA 562 and CCITT V 28 communications in harsh environments Each receiver input is protected against 15kV electrostatic dis charge ESD shocks These inputs have a 25V range and feature hysteresis and time domain filtering The outputs are TTL and CMOS compatible The MAX1489E has a 120kbps guaranteed data rate Supply current is typically 350pA The MAX1489E is pin compatible with the MC1489 MC14C89 SN75189 SN75C189 DS1489 and DS14C89 It is available in 14 pin plastic DIP and SO packages Applications PC Motherboards Modems Interfacing Data Terminal Equipment DTE with Data Circuit Terminating Equipment DCE Equipment Meeting IEC 1000 4 2 formerly IEC801 2 or 15kV ESD Protection Typical Operating Circuit MAXIM 14 MAX1488E MAXIM 14 MAX1489E INTERCONNECTING CABLE MAXIM 14 MAX1489E MAXIM 14 MAX1488E SIGNAL GROUND L PC MOTHERBOARD DTE MAXIM Features Enhanced ESD Protection 15kV Human Body Model 8kV IEC1000 4 2 Contact Discharge 15kV IEC1000 4 2 Air Gap Discharge Latchup Free During an ESD Event Low 350pA Supply Current Input Hysteresis and Time Domain Filtering Eliminate the Need for External Filtering Stable Input Threshol
3. ME Ia tb CURRENT WAVEFORM Figure 2a Human Body ESD Test Model Detailed Description 15kV ESD Protection As with all Maxim devices ESD protection structures are incorporated on all pins to protect against electro static discharges encountered during handling and assembly The MAX1489E receiver inputs have extra protection against static electricity found in normal operation Maxim s engineers developed state of the art structures to protect these pins against ESD of 15kV without damage After an ESD event the MAX1489E keeps working without latchup ESD protection can be tested in various ways the receiver inputs are characterized for protection to the following 1 15kV using the Human Body Model 2 8kV using the Contact Discharge method speci fied in IEC 1000 4 2 formerly IEC801 2 3 15kV using the Air Gap Discharge method speci fied in IEC 1000 4 2 formerly IEC801 2 ESD Test Conditions Contact Maxim for a reliability report that documents test setup methodology and results Figure 2b Human Body Model Current Waveform Human Body Model Figure 2a shows the Human Body Model and Figure 2b shows the current waveform it generates when dis charged into a low impedance This model consists of a 100pF capacitor charged to the ESD voltage of inter est which is then discharged into the test device through a 1 5kQ resistor IEC 1000 4 2 The IEC 100 4 2 standard covers ESD testing and per formance
4. ds Pin Compatible with MC1489 MC14C89 SN75189 SN75C189 DS1489 and DS14C89 Ordering Information PART TEMP RANGE PIN PACKAGE MAX1489ECPD 0 C to 70 C 14 Plastic DIP MAX1489ECSD 0 C to 70 C 14 SO MAX1489EC D 0 C to 70 C Dice MAX1489EEPD 40 C to 85 C 14 Plastic DIP MAX1489EESD 40 C to 85 C 14S0 Dice are specified at Ta 25 C Pin Configuration TOP VIEW DIP SO Maxim Integrated Products 1 For pricing delivery and ordering information please contact Maxim Dallas Direct at 1 888 629 4642 or visit Maxim s website at www maxim ic com 368v LXVIN MAX1489E 15kV ESD Protected Quad Low Power RS 232 Line Receiver ABSOLUTE MAXIMUM RATINGS Supply Voltage Vee an san 7V Input Voltage NI 30V Output Short Circuit Current Shorted to GND or Vcc Note 7 Self Limiting Continuous Power Dissipation Ta 70 C Plastic DIP derate 10 00mW C above 70 C 800mW SO derate 8 7mMW C above 70 O nee 695mW Operating Temperature Ranges MAXIABIET DD eine ent 0 C to 70 C MAXTABIEE Eesen 40 C to 85 C Storage Temperature Range 65 C to 160 C Lead Temperature soldering 108 300 C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device These are stress ratings only and func
5. ime Note 2 See Noise Pulse Rejection graph in Typical Operating Characteristics section 2 MAXIMA 15kV ESD Protected Quad Low Power RS 232 Line Receiver Vcc 5V Ta 25 C unless otherwise noted PROPAGATION DELAY vs TEMPERATURE Typical Operating Characteristics PROPAGATION DELAY SKEW vs TEMPERATURE NOISE PULSE REJECTION 2 2 z 800 e 8 3 8 E Vin Du Vin PULSE AMP 2 g g 2 2 i S18 600 2 f 300kHz gt x A S 14 amp 400 g tPLH E a S g 2 T 1 0 a 200 2 a oO gt 0 6 0 0 40 15 10 35 60 85 40 35 60 85 0 7 1 1 1 5 1 9 23 27 TEMPERATURE C TEMPERATURE C INPUT PULSE WIDTH us Pin Description 3 0V PIN NAME FUNCTION SG 15V 1 SE INPUT_ Receiver Inputs o Von 2 5 9 No Connect not internally N C 12 connected 3 7 8 OUTPUT_ Receiver Outputs Vout 7 GND Ground 14 Voc Supply Voltage Vou SIGNAL GENERATOR S G NOTE S G SET TO f 20kHz DUTY CYCLE 50 tr tF lt 5 0ns Figure 1 Timing Diagram MAXIM 3 J68 LXVIN MAX1489E 15kV ESD Protected Quad Low Power RS 232 Line Receiver Ro 1MQ Rp 15000 CHARGE CURRENT DISCHARGE LIMIT RESISTOR RESISTANCE HIGH gt DEVICE 100pF T CAPACITOR TEST DC SOURCE Ir PEAK TO PEAK RINGING NOT DRAWN TO SCALE AMPERES 36 8 10 0 TI
6. of finished equipment it does not specifically refer to integrated circuits The MAX1489E helps you design equipment that meets Level 4 the highest level of IEC 1000 4 2 without additional ESD protection com ponents The major difference between tests done using the Human Body Model and IEC 1000 4 2 is higher peak cur rent in IEC1000 4 2 Because series resistance is lower in the IEC1000 4 2 ESD test model Figure 3a the ESD withstand voltage measured to this standard is generally lower than that measured using the Human Body Model Figure 3b shows the current waveform for the 8kV IEC 1000 4 2 Level 4 ESD Contact Discharge test The Air Gap test involves approaching the device with a charged probe The Contact Discharge method connects the probe to the device before the probe is energized MAXIM 15kV ESD Protected Quad Low Power RS 232 Line Receiver Rc 50MQ to 100MQ Rp 3309 Ba O Mk MM CHARGE CURRENT DISCHARGE LIMIT RESISTOR RESISTANCE DEVICE UNDER TEST STORAGE CAPACITOR SOURCE IPEAK 10 tr 0 7ns to Ins Figure 3a IEC1000 4 2 ESD Test Model Machine Model The Machine Model for ESD testing uses a 200pF stor age capacitor and zero discharge resistance Its objec tive is to mimic the stress caused by contact that occurs with handling and assembly during manufactur ing Of course all pins not just RS 232 inputs and out puts require this protection du
7. ring manufacturing Therefore the Machine Model is less relevant to the I O ports than the Human Body Model and IEC 1000 4 2 MAXIM Figure 3b IEC1000 4 2 ESD Generator Current Waveform Applications Information Use proper layout to ensure other devices on your board are not damaged in an ESD strike Currents as high as 60A can instantaneously pass through the ground pin so it is important to minimize the ground lead return path to the power supply A separate return path to the power supply is recommended Trace widths should be greater than 40 mils Vcc must be bypassed with 0 1uF capacitors as close to the part as possible to ensure maximum ESD protection 368vV i XVN MAX1489E 15kV ESD Protected Quad Low Power RS 232 Line Receiver Chip Topography INPUT B 0 096 2 438mm OUTPUT B OUTPUT C 0 071 1 803mm TRANSISTOR COUNT 144 SUBSTRATE CONNECTED TO GND MAXIM 15kV ESD Protected Quad Low Power RS 232 Line Receiver Package Information The package drawing s in this data sheet may not reflect the most current specifications For the latest package outline information go to www maxim ic com packages
8. tional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability ELECTRICAL CHARACTERISTICS Vcc 5V 10 Ta Tmin to Tmax unless otherwise noted Typical values are at Vcc 5V Ta 25 C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS lout 20uA 3 5 4 99 Output Voltage High VOH Vin lt 0 4V V IOUT 3 2MA 2 5 4 41 Output Voltage Low VOL VIN 2 2 4V IOUT 3 2mA 0 17 0 4 V Output Short Circuit Current i s Shorted to GND 35 E Note 1 Shorted to Vcc 60 Supply Current Icc 260 600 HA Input Voltage Range VIN 25 25 V Input Voltage High VIH 1 60 2 17 2 60 V Input Voltage Low VIL 0 75 1 06 1 30 V Input Hysteresis VHYST 1 11 V Input Resistance RIN 3 0 5 0 7 0 kO TIMING CHARACTERISTICS an N Delay tPLH Figure 1 1 38 4 0 US SE en Delay tPHL Figure 1 1 45 4 0 US SCH GE Delay Skew teg Figured 70 S Output Transition Time tTR VouT 10 to 90 35 120 ns Input Noise Rejection tN Pulse amplitude 5V Note 2 1 0 US Guaranteed Data Rate DR 120 240 kbps ESD CHARACTERISTICS Human Body Model 15 ESD Protection IEC 1000 4 2 Contact Discharge 8 kV IEC 1000 4 2 Air Gap Discharge 15 Note 1 Only one output may be shorted at a t
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MAXIM MAX1489E handbook(1)