5 V-Powered CMOS RS-232 Drivers/Receivers ADM231L–ADM234L/ADM236L–ADM241L FEATURES ADM236L TYPICAL OPERATING CIRCUIT Single 5 V power supply Meets all EIA-232-E and V.28 specifications 120 kbps data rate On-board dc-to-dc converters ±9 V output swing with 5 V supply Small 1 µF capacitors Low power shutdown ≤1 µA ±30 V receiver input levels Latch-up free +5V INPUT 1µF +6.3V 1µF +16V TTL/CMOS INPUTS1 APPLICATIONS Computers Peripherals Modems Printers Instruments TTL/CMOS OUTPUTS C1+ C1– C2+ C2– +5V TO +10V VOLTAGE DOUBLER +10V TO –10V VOLTAGE INVERTER VCC V+ 1µF +6.3V 1µF +6.3V V– 1µF +16V T1IN T1 T1OUT T2IN T2 T2OUT T3IN T3 T3OUT T4IN T4 T4OUT R1OUT R1 R1IN R2OUT R2 R2IN R3OUT R3 R3IN ADM236L SD RS-232 OUTPUTS RS-232 INPUTS2 EN The ADM2xx family of line drivers/receivers is intended for all EIA-232-E and V.28 communications interfaces, especially in applications in which 12 V is not available. The ADM236L and ADM241L feature a low power shutdown mode that reduces power dissipation to less than 5 µW, making them ideally suited for battery-powered equipment. The ADM233L does not require any external components and is particularly useful in applications where printed circuit board space is critical. All members of the ADM2xxL family, except the ADM231L and ADM239L, include two internal charge pump voltage converters that allow operation from a single 5 V supply. These parts convert the 5 V input power to the ±10 V required for RS-232 output GND 1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. Figure 1. levels. The ADM231L and ADM239L are designed to operate from 5 V and 12 V supplies. An internal +12 V to −12 V charge pump voltage converter generates the −12 V supply. The ADM2xxL is an enhanced upgrade to the AD2xx family. It features lower power consumption, faster slew rate, and the ability to operate with smaller (1 µF) capacitors. Table 1. Selection Table Part Number ADM231L ADM232L ADM233L ADM234L ADM236L ADM237L ADM238L ADM239L ADM241L Power Supply Voltage 5 V and 7.5 V to 13.2 V 5V 5V 5V 5V 5V 5V 5 V and 7.5 V to 13.2 V 5V No. of RS-232 Drivers 2 2 2 4 4 5 4 3 4 No. of RS-232 Receivers 2 2 2 0 3 3 4 5 5 External Capacitors 2 4 None 4 4 4 4 2 4 Low Power Shutdown (SD) No No No No Yes No No No Yes TTL Three-State EN No No No No Yes No No Yes Yes No. of Pins 14 16 20 16 24 24 24 24 28 Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 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All rights reserved. 00070-0-015 GENERAL DESCRIPTION ADM231L–ADM234L/ADM236L–ADM241L TABLE OF CONTENTS Specifications..................................................................................... 3 General Information ...................................................................... 12 Absolute Maximum Ratings............................................................ 4 Circuit Description .................................................................... 12 ESD Caution.................................................................................. 4 Application Hints ....................................................................... 13 Pin Configurations and Function Descriptions ........................... 5 Outline Dimensions ....................................................................... 14 Typical Performance Characteristics ............................................. 8 Ordering Guide .......................................................................... 17 Typical Operating Circuits .............................................................. 9 REVISION HISTORY 4/05—Rev. B to Rev. C Updated Format..................................................................Universal Removed ADM223, ADM230L, and ADM235L............Universal Changed Hysteresis Level ..................................................Universal Changes to Specifications Table...................................................... 3 Updated Outline Dimensions ....................................................... 14 Changes to Ordering Guide .......................................................... 17 5/01—Rev. A to Rev. B Edits to Test Conditions/Comments of Specifications................ 2 1/01—Rev. 0 to Rev. A Removed ESD information from Features section ...................... 1 Changes to Specifications Table...................................................... 2 Removed ESD information from Absolute Maximum Ratings section .............................................. 2 Revision 0: Initial Version Rev. C | Page 2 of 20 ADM231L–ADM234L/ADM236L–ADM241L SPECIFICATIONS VCC = 5 V ± 10% (ADM231L, ADM232L, ADM234L, ADM236L, ADM238L, ADM239L, ADM241L); VCC = 5 V ± 5% (ADM233L and ADM237L); V+ = 7.5 V to 13.2 V (ADM231L and ADM239L); C1 to C4 = 1.0 µF ceramic. All specifications TMIN to TMAX, unless otherwise noted. Table 2. Parameter Output Voltage Swing Min ±5 VCC Power Supply Current V+ Power Supply Current Shutdown Supply Current Input Logic Threshold Low, VINL Input Logic Threshold High, VINH Logic Pull-Up Current RS-232 Input Voltage Range1 RS-232 Input Threshold Low RS-232 Input Threshold High RS-232 Input Hysteresis RS-232 Input Resistance TTL/CMOS Output Voltage Low, VOL TTL/CMOS Output Voltage High, VOH TTL/CMOS Output Leakage Current Output Enable Time (TEN) Output Disable Time (TDIS) Propagation Delay Transition Region Slew Rate Output Resistance RS-232 Output Short-Circuit Current 1 Typ ±9 Max Unit V 2.5 3.5 1.5 1 6.0 13 4 10 0.8 mA mA mA µA V V µA 2.0 12 –30 0.8 3 25 +30 1.2 1.6 0.65 5 2.4 7 0.4 3.5 +0.05 250 50 0.3 8 300 ±10 ±10 V V V V kΩ V V µA ns ns µs V/µs Ω mA Test Conditions/Comments All transmitter outputs loaded with 3 kΩ to ground No load, (ADM232L only) No load No load, V+ = 12 V (ADM231L and ADM239L only) TIN, EN, SD, EN, SD TIN, EN, SD, EN, SD TIN = 0 V TA = 0°C to 85°C IOUT = −1.0 mA EN = VCC, 0 V ≤ ROUT ≤ VCC ADM236L, ADM239L, ADM241L (Figure 31, CL = 150 pF) ADM236L, ADM239L, ADM241L (Figure 31, RL = 1 kΩ) RS-232 to TTL RL = 3 kΩ, CL = 2500 pF, measured from +3 V to −3 V or −3 V to +3 V VCC = V+ = V– = 0 V, VOUT = ±2 V Guaranteed by design. Rev. C | Page 3 of 20 ADM231L–ADM234L/ADM236L–ADM241L ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 3. Parameter VCC V+ V– Input Voltages TIN RIN Output Voltages TOUT ROUT Short-Circuit Duration TOUT Power Dissipation N-14 PDIP (Derate 10 mW/°C above 70°C) N-16 PDIP (Derate 10.5 mW/°C above 70°C) N-20 PDIP (Derate 11 mW/°C above 70°C) N-24-1 PDIP (Derate 13.5 mW/°C above 70°C) R-16 SOIC (Derate 9 mW/°C above 70°C) R-24 SOIC (Derate 12 mW/°C above 70°C) R-28 SOIC (Derate 12.5 mW/°C above 70°C) RS-28 SSOP (Derate 10 mW/°C above 70°C) Rating –0.3 V to +6 V (VCC – 0.3 V) to +14 V +0.3 V to −14 V Parameter Q-14 CERDIP (Derate 10 mW/°C above 70°C) Q-16 CERDIP (Derate 10 mW/°C above 70•C) Q-24 CERDIP (Derate 12.5 mW/°C above 70°C) Thermal Impedance, θJA N-14 PDIP N-16 PDIP N-20 PDIP N-24-1 PDIP R-16 SOIC R-24 SOIC R-28 SOIC RS-28 SSOP Q-14 CERDIP Q-16 CERDIP Q-24 CERDIP Operating Temperature Range Commercial (J Version) Industrial (A Version) Storage Temperature Range Lead Temperature, Soldering Vapor Phase (60 sec) Infrared (15 sec) –0.3 V to (VCC + 0.3 V) ±30 V (V+, +0.3 V) to (V–, –0.3 V) –0.3 V to (VCC + 0.3 V) Continuous 800 mW 840 mW 890 mW 1000 mW 760 mW 850 mW 900 mW Rating 720 mW 800 mW 1000 mW 140°C/W 135°C/W 125°C/W 120°C/W 105°C/W 85°C/W 80°C/W 100°C/W 105°C/W 100°C/W 55°C/W 0°C to 70°C −40°C to +85°C −65°C to +150°C 300°C 215°C 220° C 900 mW Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect device reliability. ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev. C | Page 4 of 20 ADM231L–ADM234L/ADM236L–ADM241L PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS T2OUT 4 ADM231L TOP VIEW (Not to Scale) R1OUT 3 18 T2OUT R1IN 4 T1OUT 5 12 GND GND 6 TOP VIEW (Not to Scale) 11 T1OUT VCC 7 14 8 13 C1– 9 12 5 10 R1IN R2OUT 6 9 GND 8 7 R1OUT T1IN 00070-0-004 R2IN C1+ T2IN C2– C1+ 1 16 V+ C1– 2 15 VCC T1OUT 14 GND V– 3 4 ADM231L 5 TOP VIEW (Not to Scale) R2OUT T2IN 7 NC 8 V+ V– 11 C2+ 10 1 16 T3OUT T2OUT 2 15 T4OUT T2IN 3 14 T4IN 12 R1IN T1IN 4 ADM234L 13 T3IN GND 5 TOP VIEW (Not to Scale) 12 V– VCC 6 11 C2– C1+ 7 10 C2+ V+ 8 9 C1– 11 R1OUT 6 15 C2+ 13 T1OUT 10 T1IN 9 NC NC = NO CONNECT 00070-0-037 R2IN 16 C2– Figure 5. ADM233L PDIP Pin Configuration Figure 2. ADM231L PDIP Pin Configuration T2OUT 17 V– Figure 6. ADM234L PDIP/CERDIP/SOIC Pin Configuration Figure 3. ADM231L SOIC Pin Configuration T3OUT 1 24 T4OUT T1OUT 2 23 R2IN T2OUT 3 22 R2OUT R1IN 4 21 SD R1OUT 5 20 EN C1+ 1 16 VCC V+ 2 15 GND T2IN 6 ADM236L 19 14 T1OUT T1IN 7 TOP VIEW (Not to Scale) 18 T3IN 13 R1IN GND 8 17 R3OUT 9 16 R3IN T4IN 3 C2+ 4 ADM232L C2– 5 TOP VIEW (Not to Scale) 12 R1OUT VCC V– 6 11 T1IN C1+ 10 15 V– T2OUT 7 10 V+ 11 14 C– 8 9 T2IN R2OUT 00070-0-006 C1– R2IN 00070-0-008 3 19 R2IN ADM233L 13 VCC 2 V– 20 R2OUT 2 00070-0-010 C1– 14 V+ 1 1 T1IN C1– 12 13 C2+ 00070-0-014 C1+ T2IN Figure 7. ADM236L PDIP/SOIC Pin Configuration Figure 4. ADM232L PDIP/CERDIP/SOIC Pin Configuration Rev. C | Page 5 of 20 ADM231L–ADM234L/ADM236L–ADM241L 24 T4OUT T1OUT 2 23 R2IN T2OUT 3 22 R2OUT R1IN 4 21 T5IN R1OUT 5 20 T5OUT T2IN T1IN ADM237L 19 T4IN 7 TOP VIEW (Not to Scale) 18 T3IN 1 24 T1IN R1IN 2 23 T2IN GND 3 22 R2OUT VCC 4 21 R2IN V+ 5 C+ C– 20 T2OUT 6 ADM239L 19 T1OUT 7 TOP VIEW (Not to Scale) 18 R3IN V– 8 17 R3OUT R5IN 9 16 T3IN 8 17 R3OUT VCC 9 16 R3IN C1+ 10 15 V– R5OUT 10 15 NC 14 C2– R4OUT 11 14 EN R4IN 12 13 T3OUT V+ 11 C1– 13 C2+ 12 00070-0-016 GND 6 R1OUT Figure 8. ADM237L PDIP/CERDIP/SOIC Pin Configuration T2OUT 1 24 T1OUT 2 23 R3IN R2IN Figure 10. ADM239L PDIP/CERDIP/SOIC Pin Configuration T3OUT 22 R3OUT 3 R2OUT 4 21 T4IN T1IN 5 20 T4OUT T3OUT 1 T1OUT 2 27 R3IN T2OUT 3 26 R3OUT 28 T4OUT R2 4 25 SDOUT R2OUT 5 24 EN T2IN 6 23 R4IN T1IN 7 ADM241L 22 R4OUT 8 TOP VIEW (Not to Scale) 21 T4IN 9 6 ADM238L 19 T3IN R1OUT R1IN 7 TOP VIEW (Not to Scale) 18 T2IN R1IN GND GND 10 R1OUT 20 T3IN 19 R5OUT 17 R4OUT 9 16 R4IN VCC 11 18 R5IN C1+ 10 15 V– C1+ 12 17 V– V+ 13 16 C2– C1– 14 15 C2+ C1– 12 14 C2– 13 C2+ 00070-0-018 8 VCC V+ 11 00070-0-020 1 Figure 9. ADM238L PDIP/CERDIP/SOIC Pin Configuration 00070-0-022 T3OUT Figure 11. ADM241L SOIC/SSOP Pin Configuration Rev. C | Page 6 of 20 ADM231L–ADM234L/ADM236L–ADM241L Table 4. Pin Function Descriptions Mnemonic VCC V+ Function Power Supply Input. 5 V ± 10% (5 V ± 5% for ADM233L). Internally Generated Positive Supply (+10 V nominal) on all parts, except ADM231L and ADM239L. ADM231L and ADM239L require an external 7.5 V to 13.2 V supply. V− Internally Generated Negative Supply (−10 V nominal). GND C+ Ground Pin. Must be connected to 0 V. (ADM231L and ADM239L only) External capacitor (+ terminal) is connected to this pin. C− C1+ (ADM231L and ADM239L only) External capacitor (– terminal) is connected to this pin. (ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, and ADM241L) External capacitor (+ terminal) is connected to this pin. (ADM233L) The capacitor is connected internally and no external connection to this pin is required. C1− (ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, and ADM241L) External capacitor (− terminal) is connected to this pin. (ADM233L) The capacitor is connected internally and no external connection to this pin is required. C2+ (ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, and ADM241L) External capacitor (+ terminal) is connected to this pin. (ADM233L) Internal capacitor connections, Pin 11 and Pin 15, must be connected together. (ADM232L, ADM234L, ADM236L, ADM237L, ADM238L, and ADM241L) External capacitor (− terminal) is connected to this pin. (ADM233L) Internal capacitor connections, Pin 10 and Pin 16, must be connected together. C2− TIN Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to VCC is connected to each input. TOUT RIN ROUT Transmitter (Driver) Outputs. These are RS-232 levels (typically ±10 V). EN SD NC Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected on each input. Receiver Outputs. These are TTL/CMOS levels. Enable Input. Active low on ADM236L, ADM239L, and ADM241L. This input is used to enable/disable the receiver outputs. With EN = low, the receiver outputs are enabled. With EN = high, the outputs are placed in a high impedance state. This facility is useful for connecting to microprocessor systems. Shutdown Input. Active high on ADM236L and ADM241L. With SD = high on the ADM236L and ADM241L, the charge pump is disabled, the receiver outputs are placed in a high impedance state, and the driver outputs are turned off. No Connect. No connections are required to this pin. Table 5. ADM236L and ADM241L Truth Table SD 0 0 1 EN 0 1 0 Status Normal Operation Normal Operation Shutdown Transmitters T1 to T5 Enabled Enabled Disabled Rev. C | Page 7 of 20 Receivers R1 to R5 Enabled Disabled Disabled ADM231L–ADM234L/ADM236L–ADM241L TYPICAL PERFORMANCE CHARACTERISTICS 15 15 V+ 10 10 Tx O/P HI 5 Tx O/P (V) 0 –5 0 –5 V– –10 5 0 10 LOAD CURRENT (mA) 15 20 00070-0-026 –15 Tx O/P LO –10 –15 0 Figure 12. Charge Pump V+ and V− vs. Current 2 8 10 Figure 15. Transmitter Output Voltage vs. Current 350 50 45 300 V+ IMP 40 250 IMPEDANCE (Ω) 35 SLEW RATE (V/µs) 6 4 LOAD CURRENT (mA) 00070-0-029 V+/V– (V) 5 30 25 NEGATIVE SLEW 20 15 200 150 100 V– IMP POSITIVE SLEW 0 1000 1500 2000 LOAD CAPACITANCE (pF) 500 2500 3000 00070-0-027 5 0 50 9 7 Tx O/P HI LOADED 5 1 –1 –3 –5 Tx O/P LO LOADED 4.0 4.5 5.0 VCC (V) 5.5 6.0 00070-0-028 Tx O/P (V) 3 –9 4.5 4.7 4.9 5.1 5.3 VCC (V) Figure 16. Charge Pump Impedance vs. VCC Figure 13. Transmitter Slew Rate vs. Load Capacitance –7 0 Figure 14. Transmitter Output Voltage vs. VCC Rev. C | Page 8 of 20 5.5 00070-0-030 10 ADM231L–ADM234L/ADM236L–ADM241L TYPICAL OPERATING CIRCUITS +5V INPUT +5V INPUT 1µF 13 C1+ 2 C1– T1IN +12V TO –12V VOLTAGE INVERTER VCC V+ 14 V– 3 T1 8 11 +7.5V TO +13.2V TTL/CMOS INPUTS1 1µF +16V T1OUT TTL/CMOS INPUTS1 7 R1OUT 9 T2 R1 4 T2OUT 10 R1IN TTL/CMOS OUTPUTS R2OUT R2 6 5 R2IN T1OUT T2IN T2 T2OUT RS-232 OUTPUTS R1OUT R1 R1IN R2OUT R2 R2IN RS-232 INPUTS2 C1+ DO NOT MAKE CONNECTIONS TO THESE PINS RS-232 INPUTS2 C2+ C1– C2+ ADM233L INTERNAL –10V POWER SUPPLY ADM231L GND T1 TTL/CMOS OUTPUTS RS-232 OUTPUTS T2IN T1IN 00070-0-005 12 1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. INTERNAL +10V POWER SUPPLY 1INTERNAL 2INTERNAL Figure 17. ADM231L Typical Operating Circuit (PDIP Pinout) V– C2– V– C2– V+ GND GND 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. Figure 19. ADM233L Typical Operating Circuit 5V INPUT 1µF +6.3V 1µF +16V C1– C2+ C2– +5V TO +10V VOLTAGE DOUBLER +10V TO –10V VOLTAGE INVERTER T1IN VCC V+ 1µF +6.3V 5V INPUT 1µF +6.3V 1µF +6.3V V– 1µF +16V 1µF +16V T1 T1OUT T2 T2OUT RS-232 OUTPUTS T2IN R1OUT R1 TTL/CMOS INPUTS1 R1IN RS-232 INPUTS2 TTL/CMOS OUTPUTS R2OUT R2 GND R2IN ADM232L 1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. C1+ C1– C2+ C2– +5V TO +10V VOLTAGE DOUBLER +10V TO –10V VOLTAGE INVERTER VCC V+ 1µF +6.3V 1µF +16V T1 T1OUT T2IN T2 T2OUT T3IN T3 T3OUT T4IN T4 T4OUT Rev. C | Page 9 of 20 RS-232 OUTPUTS ADM234L 1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. Figure 20. ADM234L Typical Operating Circuit Figure 18. ADM232L Typical Operating Circuit 1µF +6.3V V– T1IN GND 00070-0-007 TTL/CMOS INPUTS1 C1+ 00070-0-009 1µF +16V 1 00070-0-011 VCC ADM231L–ADM234L/ADM236L–ADM241L +5V INPUT TTL/CMOS INPUTS1 TTL/CMOS OUTPUTS C1– C2+ C2– +5V TO +10V VOLTAGE DOUBLER +10V TO –10V VOLTAGE INVERTER VCC 1µF +6.3V V+ 1µF +16V T1 T1OUT T2IN T2 T2OUT T3IN T3 T3OUT T4IN T4 T4OUT R1OUT R1 R1IN R2OUT R2 R2IN EN GND 1µF +16V V– T1IN R3OUT 1µF +6.3V 1µF +6.3V R3 R3IN ADM236L SD TTL/CMOS INPUTS1 RS-232 OUTPUTS RS-232 INPUTS2 TTL/CMOS OUTPUTS 1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. +5V INPUT TTL/CMOS INPUTS1 TTL/CMOS OUTPUTS C2+ C2– +10V TO –10V VOLTAGE INVERTER VCC 1µF +6.3V V+ V– 1µF +16V T1IN T1 T1OUT T2IN T2 T2OUT T3IN T3 T3OUT T4IN T4 T4OUT T5IN T5 20 RS-232 OUTPUTS T5OUT R1OUT R1 R1IN R2OUT R2 R2IN R3OUT R3 R3IN GND 1µF +6.3V RS-232 INPUTS2 ADM237L 1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 2INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. 00070-0-017 1µF +16V C1– +5V TO +10V VOLTAGE DOUBLER C2+ C2– +10V TO –10V VOLTAGE INVERTER VCC V+ 1µF +6.3V Figure 22. ADM237L Typical Operating Circuit Rev. C | Page 10 of 20 1µF +6.3V V– 1µF +16V T1 T1OUT T2IN T2 T2OUT T3IN T3 T3OUT T4IN T4 T4OUT R1OUT R1 R1IN R2OUT R2 R2IN R3OUT R3 R3IN R4OUT R4 R4IN RS-232 OUTPUTS RS-232 INPUTS2 GND ADM238L 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. Figure 23. ADM238L Typical Operating Circuit Figure 21. ADM236L Typical Operating Circuit C1+ C1– +5V TO +10V VOLTAGE DOUBLER T1IN 1INTERNAL 2INTERNAL 1µF +6.3V C1+ 00070-0-019 1µF +16V C1+ 00070-0-015 1µF +6.3V +5V INPUT ADM231L–ADM234L/ADM236L–ADM241L +5V INPUT +5V INPUT VCC 1µF +16V C1+ C1– +12V TO –12V VOLTAGE INVERTER V+ +7.5V TO +13.2V INPUT 1µF +16V C1+ 1µF +16V C2+ V– 1µF +16V T1IN TTL/CMOS OUTPUTS T2IN T2 T2OUT T3IN T3 T3OUT TTL/CMOS INPUTS1 RS-232 OUTPUTS C2– +10V TO –10V VOLTAGE INVERTER VCC V+ V– 1µ F +6.3V T1IN T1 T1OUT T2IN T2 T2OUT T3IN T3 T3OUT T4IN T4 T4OUT R1 R1IN R1OUT R1 R1IN R2OUT R2 R2IN R2OUT R2 R2IN R3OUT R3 R3IN R3OUT R3 R3IN R4OUT R4 R4IN R4OUT R4 R4IN R5OUT R5 R5IN R5OUT R5 R5IN ADM239L NC ADM241L SD EN 1INTERNAL 2INTERNAL GND RS-232 INPUTS2 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. TTL/CMOS OUTPUTS EN Figure 24. ADM239L Typical Operating Circuit 1INTERNAL 2INTERNAL GND RS-232 OUTPUTS RS-232 INPUTS2 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT. 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. Figure 25. ADM241L Typical Operating Circuit Rev. C | Page 11 of 20 1µF +6.3V 1µF +16V R1OUT 00070-0-021 TTL/CMOS INPUTS1 T1OUT T1 C1– +5V TO +10V VOLTAGE DOUBLER 00070-0-023 1µF ADM231L–ADM234L/ADM236L–ADM241L GENERAL INFORMATION T 1 Tx INPUT T 2 Tx OUTPUT CH1 5.00V CH2 5.00V M1.00µs CH1 00070-0-033 The ADM231L–ADM234L/ADM236L–ADM241L family of RS-232 drivers/receivers is designed to solve interface problems by meeting the EIA-232-E specifications while using a single digital 5 V supply. The EIA-232-E standard requires that transmitters deliver ±5 V minimum on the transmission channel and that receivers can accept signal levels down to ±3 V. The ADM231L–ADM234L/ADM236L–ADM241L meet these requirements by integrating step-up voltage converters and level-shifting transmitters and receivers onto the same chip. CMOS technology is used to keep the power dissipation to an absolute minimum. A comprehensive range of transmitter/ receiver combinations is available for most communications needs. 800mV Figure 28. Transmitter Output Unloaded Slew Rate CIRCUIT DESCRIPTION The ADM236L and ADM241L are particularly useful in battery-powered systems because they feature a low power shutdown mode that reduces power dissipation to less than 5 µW. The internal circuitry in the ADM236L to ADM241L consists of three main sections: a charge pump voltage converter, RS-232-toTTL/CMOS receivers, and TTL/CMOS-to-RS-232 transmitters. The ADM233L is designed for applications in which space saving is important because the charge pump capacitors are molded into the package. The ADM231L and ADM239L include only a negative charge pump converter and are intended for applications in which +12 V is available. Charge Pump DC-to-DC Voltage Converter To facilitate sharing a common line or for connection to a microprocessor data bus, the ADM236L, ADM239L, and ADM241L feature an enable (EN, EN) function. When the receivers are disabled, their outputs are placed in a high impedance state. The charge pump voltage converter consists of an oscillator and a switching matrix. The converter generates a 10 V supply from the 5 V input. This is done in two stages using a switched capacitor technique, as illustrated in Figure 29 and Figure 30. First, the 5 V input supply is doubled to 10 V, using capacitor C1 as the charge storage element. The 10 V level is then inverted to generate –10 V, using C2 as the storage element. S1 S3 VCC V+ = 2VCC C1 C3 S2 S4 VCC 1 T SD V+ 00070-0-034 GND INTERNAL OSCILLATOR T Figure 29. Charge Pump Voltage Doubler T V– 3.1V 00070-0-031 CH1 5.00V CH2 5.00V M50.0µs CH1 CH3 5.00V BW V+, V– EXITING SD S1 S3 V+ FROM VOLTAGE DOUBLER GND C2 S2 + C4 + S4 V– = –(V+) GND 00070-0-035 Figure 26. Charge Pump V+ and V− Exiting Shutdown INTERNAL OSCILLATOR Tx INPUT T 1 Figure 30. Charge Pump Voltage Inverter T 2 CH1 5.00V CH2 5.00V M1.00 µs CH1 800mV 00070-0-032 Tx OUTPUT Capacitors C3 and C4 are used to reduce the output ripple. Their values are not critical and can be reduced if higher levels of ripple are acceptable. The charge pump capacitors, C1 and C2, can be reduced at the expense of higher output impedance on the V+ and V– supplies, and the V+ and V– supplies can be used to power external circuitry if the current requirements are small. Figure 27. Transmitter Output Loaded Slew Rate Rev. C | Page 12 of 20 ADM231L–ADM234L/ADM236L–ADM241L Transmitter (Driver) Section Enable Input The drivers convert TTL/CMOS input levels into EIA-232-E output levels. With VCC = +5 V and driving a typical EIA-232-E load, the output voltage swing is ±9 V. Even under worst-case conditions, the drivers are guaranteed to meet the ±5 V EIA-232-E minimum requirement. ADM239L and ADM241L feature an enable input used to enable or disable the receiver outputs. The enable input is active low on the ADM239L and ADM241L (see Table 5). When the receivers are disabled, their outputs are placed in a high impedance state. This function allows the outputs to be connected directly to a microprocessor data bus. It can also be used to allow receivers from different devices to share a common data line. The timing diagram for the enable function is shown in Figure 31. The input threshold levels are both TTL- and CMOS-compatible with the switching threshold set at VCC/4. With a nominal VCC = 5 V, the switching threshold is 1.25 V typical. Unused inputs can be left unconnected because an internal 400 kΩ pull-up resistor pulls them high, forcing the outputs into a low state. 3V EN 0V TEN ROUT Receiver Section TDIS 3.5V VOH – 0.1V 0.8V VOL + 0.1V 00070-0-036 As required by the EIA-232-E standard, the slew rate is limited to less than 30 V/µs without the need for an external slew-limiting capacitor, and the output impedance in the power-off state is greater than 300 Ω. Figure 31. Enable Timing The receivers are inverting level shifters that accept EIA-232-E input levels (±5 V to ±15 V) and translate them into 5 V TTL/ CMOS levels. The inputs have internal 5 kΩ pull-down resistors to ground and are protected against overvoltages of up to ±30 V. The guaranteed switching thresholds are 0.8 V minimum and 2.4 V maximum, which are well within the ±3 V EIA-232-E requirement. The low level threshold is deliberately positive because it ensures that an unconnected input is interpreted as a low level. The receivers have Schmitt trigger inputs with a hysteresis level of 0.65 V. This ensures error-free reception for both noisy inputs and inputs with slow transition times. Shutdown (SD) The ADM236L and ADM241L feature a control input that can be used to disable the part and reduce the power consumption to less than 5 µW. This is very useful in battery-operated systems. During shutdown, the charge pump is turned off, the transmitters are disabled, and all receivers are put into a high impedance, disabled state. The shutdown control input is active high on all parts (see Table 5). APPLICATION HINTS Driving Long Cables In accordance with the EIA-232-E standard, long cables are permissible, provided that the total load capacitance does not exceed 2500 pF. For longer cables that do exceed this, it is possible to trade off baud rate for cable length. Large load capacitances cause a reduction in slew rate; therefore, the maximum transmission baud rate is decreased. The ADM236L to ADM241L are designed to minimize the slew rate reduction that occurs as load capacitance increases. For the receivers, it is important that a high level of noise immunity be built in so that slow rise and fall times do not cause multiple output transitions as the signal passes slowly through the transition region. The ADM236L to ADM241L have 0.65 V of hysteresis to guard against this. This ensures that even in noisy environments error-free reception can be achieved. High Baud Rate Operation The ADM236L to ADM241L feature high slew rates, permitting data transmission at rates well in excess of the EIA-232-E specification. The drivers maintain ±5 V signal levels at data rates up to 100 kbps under worst-case loading conditions. Rev. C | Page 13 of 20 ADM231L–ADM234L/ADM236L–ADM241L OUTLINE DIMENSIONS 0.685 (17.40) 0.665 (16.89) 0.645 (16.38) 14 8 1 7 10.50 (0.4134) 10.10 (0.3976) 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 7.60 (0.2992) 7.40 (0.2913) 0.100 (2.54) BSC 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.015 (0.38) MIN 0.180 (4.57) MAX 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 1.27 (0.0500) BSC 0.30 (0.0118) 0.10 (0.0039) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) SEATING 0.022 (0.56) 0.060 (1.52) PLANE 0.018 (0.46) 0.050 (1.27) 0.014 (0.36) 0.045 (1.14) 16 9 1 8 SEATING PLANE 1.27 (0.0500) 0.40 (0.0157) Figure 34. 16-Lead Standard Small Outline Package [SOIC] Wide Body (R-16) Dimensions shown in millimeters and (inches) 0.005 (0.13) MIN 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.015 (0.38) MIN 0.180 (4.57) MAX 14 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.098 (2.49) MAX 8 PIN 1 1 7 SEATING PLANE 0.200 (5.08) MAX 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) COMPLIANT TO JEDEC STANDARDS MO-095AC CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 0.310 (7.87) 0.220 (5.59) 0.100 (2.54) BSC 0.785 (19.94) MAX 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) 8° 0.33 (0.0130) 0° 0.20 (0.0079) 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.100 (2.54) BSC 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.75 (0.0295) × 45° 0.25 (0.0098) 2.65 (0.1043) 2.35 (0.0925) COMPLIANT TO JEDEC STANDARDS MS-013AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 32. 14-Lead Plastic Dual In-Line Package [PDIP] (N-14) Dimensions shown in inches and (millimeters) 0.785 (19.94) 0.765 (19.43) 0.745 (18.92) 0.51 (0.0201) 0.31 (0.0122) COPLANARITY 0.10 10.65 (0.4193) 10.00 (0.3937) 8 1 COMPLIANT TO JEDEC STANDARDS MO-095-AB CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 9 16 0.060 (1.52) 0.015 (0.38) 0.320 (8.13) 0.290 (7.37) 0.150 (3.81) MIN 0.070 (1.78) SEATING 15° PLANE 0° 0.030 (0.76) 0.015 (0.38) 0.008 (0.20) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 33. 16-Lead Plastic Dual In-Line Package [PDIP] (N-16) Dimensions shown in inches and (millimeters) Figure 35. 14-Lead Ceramic Dual In-Line Package [CERDIP] (Q-14) Dimensions shown in inches and (millimeters) Rev. C | Page 14 of 20 ADM231L–ADM234L/ADM236L–ADM241L 0.098 (2.49) MAX 0.005 (0.13) MIN 16 9 1 8 0.060 (1.52) 0.015 (0.38) 0.840 (21.34) MAX 0.320 (8.13) 0.290 (7.37) 0.150 (3.81) MIN 0.200 (5.08) 0.125 (3.18) 0.100 (2.54) BSC 0.023 (0.58) 0.014 (0.36) 11 1 10 15° 0° 0.070 (1.78) SEATING PLANE 0.030 (0.76) 0.015 (0.38) 0.008 (0.20) 0.200 (5.08) MAX 0.310 (7.87) 0.220 (5.59) 0.200 (5.08) 0.125 (3.18) 20 11 1 10 0.180 (4.57) MAX SEATING 0.100 0.060 (1.52) PLANE (2.54) BSC 0.050 (1.27) 0.045 (1.14) 15° 0° 0.070 (1.78) SEATING 0.030 (0.76) PLANE 0.015 (0.38) 0.008 (0.20) Figure 39. 20-Lead Ceramic Dual In-Line Package [CERDIP] (Q-20) Dimensions shown in inches and (millimeters) 1.185 (30.01) 1.165 (29.59) 1.145 (29.08) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.320 (8.13) 0.290 (7.37) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.015 (0.38) MIN 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.100 (2.54) BSC 0.023 (0.58) 0.014 (0.36) Figure 36. 16-Lead Ceramic Dual In-Line Package [CERDIP] (Q-16) Dimensions shown in inches and (millimeters) 0.985 (25.02) 0.965 (24.51) 0.945 (24.00) 0.060 (1.52) 0.015 (0.38) 1.060 (26.92) MAX 0.150 (3.81) MIN CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 20 PIN 1 PIN 1 0.200 (5.08) MAX 0.098 (2.49) MAX 0.005 (0.13) MIN 0.310 (7.87) 0.220 (5.59) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 24 13 1 12 0.180 (4.57) MAX COMPLIANT TO JEDEC STANDARDS MO-095-AE CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.015 (0.38) MIN 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.100 (2.54) BSC 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.060 (1.52) SEATING 0.050 (1.27) PLANE 0.045 (1.14) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) COMPLIANT TO JEDEC STANDARDS MO-095AG CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 40. 24-Lead Plastic Dual In-Line Package [PDIP] (N-24-1) Dimensions shown in inches and (millimeters) Figure 37. 20-Lead Plastic Dual In-Line Package [PDIP] (N-20) Dimensions shown in inches and (millimeters) 13.00 (0.5118) 12.60 (0.4961) 20 0.005 (0.13) MIN 11 7.60 (0.2992) 7.40 (0.2913) 1 10 24 0.610 (15.49) 0.500 (12.70) PIN 1 COPLANARITY 0.10 0.75 (0.0295) × 45° 0.25 (0.0098) 8° 0.51 (0.0201) SEATING 0.33 (0.0130) 0° 0.31 (0.0122) PLANE 0.20 (0.0079) 1.27 (0.0500) 0.40 (0.0157) 0.200 (5.08) 0.120 (3.05) COMPLIANT TO JEDEC STANDARDS MS-013AC CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 38. 20-Lead Standard Small Outline Package [SOIC] Wide Body (R-20) Dimensions shown in millimeters and (inches) 1 2 1.290 (32.77) MAX 0.225 (5.72) MAX 1.27 (0.0500) BSC 13 10.65 (0.4193) 10.00 (0.3937) 2.65 (0.1043) 2.35 (0.0925) 0.30 (0.0118) 0.10 (0.0039) 0.098 (2.49) MAX 0.075 (1.91) 0.015 (0.38) 0.150 (3.81) MIN 0.023 (0.58) 0.100 (2.54) 0.070 (1.78) SEATING PLANE BSC 0.014 (0.36) 0.030 (0.76) 0.620 (15.75) 0.590 (14.99) 0.015 (0.38) 0.008 (0.20) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 41. 24-Lead Side-Brazed Ceramic Dual In-Line Package [SBDIP] (D-24-2) Dimensions shown in inches and (millimeters) Rev. C | Page 15 of 20 ADM231L–ADM234L/ADM236L–ADM241L 18.10 (0.7126) 17.70 (0.6969) 1.290 (32.77) 1.150 (31.57) 13 24 28 15 0.580 (14.73) 0.485 (12.32) 1 12 0.610 (15.49) 0.600 (15.24) 0.590 (14.99) PIN 1 0.015 (0.38) MIN 0.210 (5.34) MAX 0.200 (5.08) 0.115 (2.92) 0.100 (2.54) BSC 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.070 (1.78) 0.030 (0.76) 7.60 (0.2992) 7.40 (0.2913) 1 0.165 (4.19) 0.160 (4.06) 0.155 (3.93) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) SEATING PLANE 10.65 (0.4193) 10.00 (0.3937) 14 2.65 (0.1043) 2.35 (0.0925) 0.75 (0.0295) × 45° 0.25 (0.0098) 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 8° 1.27 (0.0500) 0.51 (0.0201) SEATING 0.33 (0.0130) 0° BSC PLANE 0.33 (0.0130) 0.20 (0.0079) 1.27 (0.0500) 0.40 (0.0157) COMPLIANT TO JEDEC STANDARDS MS-011-AA CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN COMPLIANT TO JEDEC STANDARDS MS-013AE CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 42. 24-Lead Plastic Dual In-Line Package [PDIP] Wide Body (N-24-2) Dimensions shown in inches and (millimeters) Figure 45. 28-Lead Standard Small Outline Package [SOIC] Wide Body (R-28) Dimensions shown in millimeters and (inches) 10.50 10.20 9.90 28 0.098 (2.49) MAX 0.005 (0.13) MIN 24 5.60 5.30 5.00 0.310 (7.87) 0.220 (5.59) 13 PIN 1 1 0.200 (5.08) MAX 1 15 14 1 2 0.060 (1.52) 0.015 (0.38) 1.280 (32.51) MAX 0.320 (8.13) 0.290 (7.37) PIN 1 0.150 (3.81) MIN 0.200 (5.08) 0.125 (3.18) 0.100 (2.54) BSC 0.023 (0.58) 0.014 (0.36) 0.070 (1.78) SEATING 0.030 (0.76) PLANE 0.015 (0.38) 0.008 (0.20) 15° 0° 2.00 MAX 0.05 MIN 13 7.60 (0.2992) 7.40 (0.2913) 10.65 (0.4193) 10.00 (0.3937) 2.65 (0.1043) 2.35 (0.0925) 0.75 (0.0295) × 45° 0.25 (0.0098) 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 1.27 (0.0500) BSC 0.10 0.51 (0.020) 0.31 (0.012) 8° SEATING 0.33 (0.0130) 0° PLANE 0.20 (0.0079) 0.65 BSC 0.38 0.22 SEATING PLANE 8° 4° 0° Figure 46. 28-Lead Shrink Small Outline Package [SSOP] (RS-28) Dimensions shown in millimeters 15.60 (0.6142) 15.20 (0.5984) 12 COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-150AH Figure 43. 24-Lead Ceramic Dual in-Line Package [CERDIP] (Q-24) Dimensions shown in inches and (millimeters) 1 1.85 1.75 1.65 0.25 0.09 CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 24 8.20 7.80 7.40 1.27 (0.0500) 0.40 (0.0157) COMPLIANT TO JEDEC STANDARDS MS-013AD CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Figure 44. 24-Lead Standard Small Outline Package [SOIC] Wide Body (R-24) Dimensions shown in millimeters and (inches) Rev. C | Page 16 of 20 0.95 0.75 0.55 ADM231L–ADM234L/ADM236L–ADM241L ORDERING GUIDE Model ADM231LJN ADM231LJR ADM231LJR-REEL ADM231LJRZ-REEL1 ADM231LAN ADM231LAQ ADM231LAR ADM231LAR-REEL ADM232LJR ADM232LJR-REEL ADM232LJRZ1 ADM232LJRZ-REEL71 ADM232LAN ADM232LAR ADM232LAR-REEL ADM232LARZ1 ADM232LARZ-REEL1 ADM232LJN ADM232LJNZ1 ADM233LJN ADM233LAN ADM234LJN ADM234LJR ADM234LJR-REEL ADM234LJRZ1 ADM234LJRZ-REEL1 ADM234LAN ADM234LAQ ADM234LAR ADM234LAR-REEL ADM236LJN ADM236LJR ADM236LJR-REEL ADM236LAN ADM236LAR ADM236LAR-REEL ADM237LJN ADM237LJR ADM237LJR-REEL ADM237LJRZ1 ADM237LJRZ-REEL1 ADM237LAN ADM237LAQ ADM237LAR ADM237LAR-REEL ADM238LJN ADM238LJNZ1 ADM238LJR ADM238LJR-REEL ADM238LJRZ1 ADM238LJRZ-REEL1 Temperature Range 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C Package Description 14-lead PDIP 16-lead SOIC 16-lead SOIC 16-lead SOIC 14-lead PDIP 14-lead CERDIP 16-lead SOIC 16-lead SOIC 16-lead SOIC 16-lead SOIC 16-lead SOIC 16-lead SOIC 16-lead PDIP 16-lead SOIC 16-lead SOIC 16-lead SOIC 16-lead SOIC 20-lead PDIP 20-lead PDIP 20-lead PDIP 20-lead PDIP 16-lead PDIP 16-lead SOIC 16-lead SOIC 16-lead SOIC 16-lead SOIC 16-lead PDIP 16-lead CERDIP 16-lead SOIC 16-lead SOIC 24-lead PDIP 24-lead SOIC 24-lead SOIC 24-lead PDIP 24-lead SOIC 24-lead SOIC 24-lead PDIP 24-lead SOIC 24-lead SOIC 24-lead SOIC 24-lead SOIC 24-lead PDIP 24-lead CERDIP 24-lead SOIC 24-lead SOIC 24-lead PDIP 24-lead PDIP 24-lead SOIC 24-lead SOIC 24-lead SOIC 24-lead SOIC Rev. C | Page 17 of 20 Package Option N-14 R-16 R-16 R-16 N-14 Q-14 R-16 R-16 R-16 R-16 R-16 R-16 N-16 R-16 R-16 R-16 R-16 N-16 N-16 N-20 N-20 N-16 R-16 R-16 R-16 R-16 N-16 Q-16 R-16 R-16 N-24-1 R-24 R-24 N-24-1 R-24 R-24 N-24-1 R-24 R-24 R-24 R-24 N-24-1 Q-24 R-24 R-24 N-24-1 N-24-1 R-24 R-24 R-24 R-24 ADM231L–ADM234L/ADM236L–ADM241L Model ADM238LAN ADM238LAQ ADM238LAR ADM238LAR-REEL ADM238LARZ1 ADM238LARZ-REEL1 ADM239LJN ADM239LJR ADM239LJR-REEL ADM239LJRZ1 ADM239LJRZ-REEL1 ADM239LAN ADM239LAQ ADM239LAR ADM239LAR-REEL ADM241LJR ADM241LJR-REEL ADM241LJRZ1 ADM241LJRZ-REEL1 ADM241LAR ADM241LAR-REEL ADM241LJRS ADM241LJRS-REEL ADM241LARS ADM241LARS-REEL 1 Temperature Range –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C 0°C to 70°C 0°C to 70°C –40°C to +85°C –40°C to +85°C Package Description 24-lead PDIP 24-lead CERDIP 24-lead SOIC 24-lead SOIC 24-lead SOIC 24-lead SOIC 24-lead PDIP 24-lead SOIC 24-lead SOIC 24-lead SOIC 24-lead SOIC 24-lead PDIP 24-lead CERDIP 24-lead SOIC 24-lead SOIC 28-lead SOIC 28-lead SOIC 28-lead SOIC 28-lead SOIC 28-lead SOIC 28-lead SOIC 28-lead SSOP 28-lead SSOP 28-lead SSOP 28-lead SSOP Z = Pb-free part. Rev. C | Page 18 of 20 Package Option N-24-1 Q-24 R-24 R-24 R-24 R-24 N-24-1 R-24 R-24 R-24 R-24 N-24-1 Q-24 R-24 R-24 R-28 R-28 R-28 R-28 R-28 R-28 RS-28 RS-28 RS-28 RS-28 ADM231L–ADM234L/ADM236L–ADM241L NOTES Rev. C | Page 19 of 20 ADM231L–ADM234L/ADM236L–ADM241L NOTES © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C00070–0–4/05(C) Rev. C | Page 20 of 20