MAXIM MAX3314 Manual
Contents
1. z E IV AXI ZVI PROPRIETARY INFORMATION TITLE PACKAGE OUTLINE SOT 23 8L APPROVAL DOCUMENT CONTROL WoL REV 1 21 0078 C Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied a Maxim product No circuit patent licenses are implied Maxim reserves the right to change the circuitry and specifications without notice at any time 6 Maxim Integrated Products 120 San Gabriel Drive Sunnyvale CA 94086 408 737 7600 2001 Maxim Integrated Products Printed USA MAXIM is a registered trademark of Maxim Integrated Products2. 0 g Lh Le tele INCHES MILLIMETERS INCHES MILLIMETERS MIN MIN MAX MIN MIN MAX N 012 A 0 053 0 069 1 35 1 75 D 0189 0197 4 801500 8 A1 0 004 0 010 0 10 025 D 0 337 0 344 855 8 75 14 B B 0 014 0 019 0 35 0 49 D 0 386 0 394 9 80 10 00 16 C 0 007 0 010 0 19 0 25 e 0 050 127 ares E 0 150 0 157 3 80 4 00 1 D amp E DO NOT INCLUDE MOLD FLASH 022810 244 5 80620 To been Sen 7 h 0 010 0 020 0 25 0 50 3 LEADS T COPLANAR WITHIN 102mm 004 l 0 016 0 050 0 40 1 27 4 CONTROLLING DIMENSION MILLIMETER 5 MEETS C MS012 XX AS SHOWN IN ABLE 6 N NUMBER DF PINS PACKAGE FAMILY DUTLINE SOIC 150 21 0041 A io La lee SYMBOL MIN MAX 2 0 90 145 5 t 0 00 015 D 2 0 90 1 30 b 0 28 0 45 0 09 0 20 D 2 80 3 00 E 2 60 3 00 t 3 E El 150 175 L 0 10 0 60 e 0 65 ref 1D Dot el 195 ref NOTE 7 gt n a 0 107 ke D NOTE 1 ALL DIMENSIONS ARE IN MILLIMETERS FOOT LENGTH MEASURED REFERENCE TO FLAT FOOT SURFACE PARALLEL TO DATUM A 3 PACKAGE DUTLINE EXCLUSIVE DF MOLD FLASH amp METAL BURR 4 PACKAGE OUTLINE INCLUSIVE DF SOLDER PLATING 5 EIAJ REF NUMBER SC 74 6 LEAD VERSION 6 COPLANARITY 4 MILS MAX 7 8 PIN 1 LD DOT IS 0 3 MM MIN LOCATED ABOVE PIN 1 MEETS JEDEC M0178
3. erting level translator that con verts CMOS logic levels to EIA TIA 232 compatible lev els It guarantees data rates up to 460kbps with worst case loads of 3kO in parallel with 1000pF When SHDN is driven low the transmitter is disabled and put into 3 state mode The transmitter input does not have a pull up resistor Connect to ground if unused RS 232 Compatible Receivers The MAX3314 s receiver converts RS 232 signals to CMOS logic output levels The receiver is rated to sig nals up to 25V The MAX3314 s receiver will remain active during shutdown mode MAX3314 Shutdown Mode In shutdown mode the transmitter output is put into high impedance This reduces the supply current to 1 The time required to exit shutdown is less than 2 5us Table 1 is the shutdown logic truth table Table 1 Shutdown Logic Truth Table RECEIVER OUTPUT TRANSMITTER OUTPUT High Z Applications Information Active Active Capacitor Selection The capacitor type used is not critical for proper opera tion either polarized or nonpolarized capacitors are acceptable If polarized capacitors are used connect polarity as shown in the Typical Operating Circuit Bypass Vcc and V to ground with at least 0 1pF Transmitter Output When Exiting Shutdown Figure 1 shows the transmitter output when exiting shut down mode The transmitter is loaded with 3kQ in par allel with 1000pF The transmitter output displays no ringing or undes
4. es Ror 30 MI AALS 460kbps 1uA RS 232 Compatible Transceiver General Description Features The MAX3314 is a 5V powered EIA TIA 232 compati 1 Low Power Shutdown with Receiver Active ble interface It has one transmitter and one receiver in a flow through architecture The transmitter has a low 30pA Operating Supply Current dropout output stage providing minimum RS 232 com 460kbps min Data Rate patible 3 7V output levels while driving and 1000pf at 460kbps Both 5V 5V are supplied 8 Pin SOT23 Package externally RS 232 Compatible Levels The MAX3314 has a SHDN function that reduces sup ply current to 1uA The transmitter is disabled and put into 3 state mode while the receiver remains active The MAX3314 is available in 8 pin SOT23 uMAX and SO packages Ordering Information PART TEMP RANGE MAX3314CKA 0 C to 70 C 8 SOT23 MAX3314CUA 0 C to 70 C 8 uMAX MAX3314CSA 0 C to 70 C 8 SO Applications MAX3314EKA 40 C to 85 8 SOT23 Digital Cameras MAX3314EUA 40 C to 85 C 8 uMAX PDA MAX3314ESA 40 C to 85 C 8 SO GPS POS Telecommunications Handy Terminals Typical Operating Circuit Set Top Boxes Voc SHDN MAXIM Pin Configuration MAX3314 TOP VIEW SOT23 uMAX SO CAPACITORS MAY BE POLARIZED OR UNPOLARIZED MMAXKI IVI Maxim Integrated Products 1 For pricing delivery and ordering informatio
5. irable transients as the MAX3314 comes out of shutdown Note that the transmitter is enabled only when the magnitude of V exceeds approximately 3V High Data Rates The MAX3314 maintains minimum RS 232 compatible 3 7V transmitter output voltage even at high data rates 4 5V div 0 tiec 15V div 0 eR RH i dei 1us div Figure 1 Transmitter Output When Exiting Shutdown or Powering Up Voc SHDN MAXIM MAX3314 CAPACITORS MAY BE POLARIZED OR NONPOLARIZED Figure 2 Loopback Test Circuit Figure 2 shows a transmitter loopback test circuit Figure 3 shows the loopback test result at 120kbps and Figure 4 shows the same test at 250kbps Chip Information TRANSISTOR COUNT 128 MAXIM 460kbps 1uA RS 232 Compatible Transceiver ru 5us div 2us div Figure 3 Loopback Test Hesults at 120kbps Figure 4 Loopback Test Hesults at 250kbps Package Information 4x S E 8 8 INCHES MILLIMETERS INCHE PED y E E EJ T T T MAXIM 5 PLEEXVIN MAX3314 460kbps 1uA RS 232 Compatible Transceiver Package Information continued c i d EH f a
6. n please contact Maxim Dallas Direct at 1 888 629 4642 or visit Maxim s website at www maxim ic com PLEEXVIN MAX3314 460kbps 1uA RS 232 Compatible Transceiver ABSOLUTE MAXIMUM RATINGS VCC to GND ena a i 0 3V to 6V Continuous Power Dissipation M at oho athe i 0 3V to 6V 8 Pin SOT23 derate 9 7mW C above 70 C 777mW Input Voltages 8 Pin UMAX derate 4 1mW C above 70 300mW TIN SHDN i0 GND tiet et Perte 0 3V to 6V 8 Pin SO derate 5 88mMW C above 70 471mW a iret ottenere pe dtr heen 25V Operating Temperature Ranges Output Voltages MAX3314C A ise mq epe rte 0 C to 70 C TOUT tO INI ia so notet peter nete telis 13 2V MAX3314E_A 40 85 PRO UW 0 3V to Vcc 0 3 Junction 150 Short Circuit Duration Storage Temperature Range 65 C to 150 C TOUT to GND sicnt ecm sirens dette ce vede erc Continuous Lead Temperature soldering 105 300 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 in the operational sections of the specifications is not implied Exposure to absolute ma
7. on Delay Receiver input to receiver output 150pF Transmitter Skew Receiver Skew RL to 7kQ 150pF to 1000pF measured from 3V to 3V or from 3V to 3V Transition Region Slew Rate Typical Operating Characteristics Vcc 5V V 5V 250kbps data rate transmitter loaded with and TA 25 C unless otherwise noted TRANSMITTER OUTPUT VOLTAGE SUPPLY CURRENT SLEW RATE vs LOAD CAPACITANCE vs LOAD CAPACITANCE vs LOAD CAPACITANCE 3 5 6 55 E SLEW B 5 50 250kbps 8 7 j a s 460kb i c5 ps NE 20kbps 120kbps z 40 6 a 2 Okbps 250kbps E 35 gt E a 5 gt h 30 amp 1 SLEW 2 25 E amp 20 a 3 E amp 2 amp 3 L20kbps t20kbp 460kbps 250kbps B15 5 1 0 1 120kbps 5 0 5 20kbps 0 6 0 0 500 1000 1500 2000 2500 3000 0 500 1000 1500 2000 2500 3000 0 500 1000 1500 2000 2500 3000 LOAD CAPACITANCE pF LOAD CAPACITANCE pF LOAD CAPACITANCE pF Pin Description FUNCTION 5 External Power Supply Decouple with a O 1uF capacitor to ground O O 5 External Power Supply Decouple with 0 1uF capacitor to ground 96 e MAXIM 3 PLEEXVIN MAX3314 460kbps 1uA RS 232 Compatible Transceiver Detailed Description RS 232 Compatible Drivers The transmitter is an inv
8. ximum rating conditions for extended periods may affect device reliability ELECTRICAL CHARACTERISTICS Vcc 5V V 5V TA to Tmax unless otherwise noted Typical values are at TA 25 PARAMETER SYMBOL CONDITIONS DC CHARACTERISTICS Positive Supply Operating V Negative Supply Operating Range V Positive Supply Current Negative Supply Current Shutdown Supply Current LOGIC INPUTS TIN SHDN nput Logic Threshold Low nput Logic Threshold High Transmitter Input Hysteresis nput Leakage Current RECEIVER OUTPUT Voltage Low VOL IOUT 1 6mA 0 4 V Voltage High louT 1 0mA IVER INPUT Threshold Low V IL 0 8 V Input Threshold High VIH 2 4 V 0 5 V Input Hysteresis Input Resistance TRANSMITTER OUTPUT Transmitter output loaded with 3kQ to Output Voltage Swing ground Output Resistance Note 1 Vcc V 0 transmitter output 2V Output Short Circuit Current Output Leakage Current VOUT 12V transmitter disabled Note 1 Not tested guaranteed by design 2 MAXIM 460kbps 1uA RS 232 Compatible Transceiver TIMING CHARACTERISTICS Vcc 5V V 5V TA Tmin to Tmax unless otherwise noted Typical values are at TA 25 PARAMETER SYMBOL CONDITIONS Maximum Data Rate RL CL 21000pf transmitter switching Receiver input to receiver output 150pF Receiver Propagati
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MAXIM MAX3314 Manual