IC TXRX RS-232 5:3 5V LP 24DIP

 

ADM237LANZ

Manufacturer Part NumberADM237LANZ
DescriptionIC TXRX RS-232 5:3 5V LP 24DIP
ManufacturerAnalog Devices Inc
TypeTransceiver
ADM237LANZ datasheets

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Specifications of ADM237LANZ

Number Of Drivers/receivers4/3ProtocolRS232
Voltage - Supply4.75 V ~ 5.25 VMounting TypeThrough Hole
Package / Case24-DIP (0.300", 7.62mm)Lead Free Status / RoHS StatusLead free / RoHS Compliant
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FEATURES
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
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
GENERAL DESCRIPTION
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
Table 1. Selection Table
Part
Number
Power Supply Voltage
ADM231L
5 V and 7.5 V to 13.2 V
ADM232L
5 V
ADM233L
5 V
ADM234L
5 V
ADM236L
5 V
ADM237L
5 V
ADM238L
5 V
ADM239L
5 V and 7.5 V to 13.2 V
ADM241L
5 V
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. Trademarks and
registered trademarks are the property of their respective owners.
CMOS RS-232 Drivers/Receivers
ADM231L–ADM234L/ADM236L–ADM241L
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
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.
No. of RS-232
No. of RS-232
External
Drivers
Receivers
Capacitors
2
2
2
2
2
4
2
2
None
4
0
4
4
3
4
5
3
4
4
4
4
3
5
2
4
5
4
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
5 V-Powered
ADM236L TYPICAL OPERATING CIRCUIT
+5V INPUT
V
C1+
+5V TO +10V
CC
1µF
VOLTAGE
+6.3V
DOUBLER
C1–
V+
C2+
+10V TO –10V
1µF
VOLTAGE
V–
+16V
INVERTER
C2–
T1
T1
IN
T2
T2
IN
1
T3
T3
IN
T4
T4
IN
R1
R1
OUT
R2
R2
OUT
R3
R3
OUT
EN
ADM236L
GND
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 1.
TTL
Low Power
Three-State EN
Shutdown (SD)
No
No
No
No
No
No
No
No
Yes
Yes
No
No
No
No
No
Yes
Yes
Yes
© 2005 Analog Devices, Inc. All rights reserved.
1µF
1µF
+6.3V
+6.3V
1µF
+16V
T1
OUT
T2
OUT
RS-232
T3
OUT
OUTPUTS
T4
OUT
R1
IN
RS-232
R2
2
IN
INPUTS
R3
IN
SD
No. of
Pins
14
16
20
16
24
24
24
24
28
www.analog.com

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ADM237LANZ Summary of contents

  • Page 1

    FEATURES 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 ...

  • Page 2

    ADM231L–ADM234L/ADM236L–ADM241L TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configurations and Function Descriptions ........................... 5 Typical Performance Characteristics ............................................. 8 Typical Operating Circuits .............................................................. 9 REVISION HISTORY 4/05—Rev Rev. C Updated Format..................................................................Universal Removed ...

  • Page 3

    SPECIFICATIONS ± 10% (ADM231L, ADM232L, ADM234L, ADM236L, ADM238L, ADM239L, ADM241L ADM237L 7 13.2 V (ADM231L and ADM239L 1.0 µF ceramic. All specifications T otherwise noted. Table ...

  • Page 4

    ADM231L–ADM234L/ADM236L–ADM241L ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter Rating V –0 V– +0 −14 V Input Voltages T –0 ...

  • Page 5

    PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 14 C1 – – ADM231L 4 TOP VIEW 11 T2 OUT (Not to Scale OUT Figure 2. ...

  • Page 6

    ADM231L–ADM234L/ADM236L–ADM241L OUT OUT OUT OUT ADM237L TOP VIEW (Not to Scale) GND ...

  • Page 7

    Table 4. Pin Function Descriptions Mnemonic Function V Power Supply Input ± 10 ± 5% for ADM233L Internally Generated Positive Supply (+10 V nominal) on all parts, except ADM231L and ADM239L. ADM231L and ADM239L ...

  • Page 8

    ADM231L–ADM234L/ADM236L–ADM241L TYPICAL PERFORMANCE CHARACTERISTICS –5 V– –10 – LOAD CURRENT (mA) Figure 12. Charge Pump V+ and V− vs. Current NEGATIVE SLEW POSITIVE ...

  • Page 9

    TYPICAL OPERATING CIRCUITS +5V INPUT 1µ C1+ 1 1µF +12V TO –12V +16V V– VOLTAGE 2 C1– INVERTER TTL/CMOS 1 INPUTS OUT TTL/CMOS OUTPUTS R2 ...

  • Page 10

    ADM231L–ADM234L/ADM236L–ADM241L V C1+ +5V TO +10V CC 1µF VOLTAGE +6.3V DOUBLER C1– V+ C2+ +10V TO –10V 1µF VOLTAGE V– +16V INVERTER C2– TTL/CMOS 1 INPUTS ...

  • Page 11

    V CC C1+ +12V TO –12V 1µF VOLTAGE V+ +16V INVERTER C1– V– TTL/CMOS INPUTS OUT R2 R2 OUT TTL/CMOS R3 R3 OUTPUTS OUT R4 R4 OUT R5 ...

  • Page 12

    ADM231L–ADM234L/ADM236L–ADM241L GENERAL INFORMATION 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 trans- mitters deliver ±5 V minimum on ...

  • Page 13

    Transmitter (Driver) Section The drivers convert TTL/CMOS input levels into EIA-232-E output levels. With and driving a typical EIA-232-E CC load, the output voltage swing is ±9 V. Even under worst-case conditions, the drivers are guaranteed ...

  • Page 14

    ADM231L–ADM234L/ADM236L–ADM241L OUTLINE DIMENSIONS 0.685 (17.40) 0.665 (16.89) 0.295 (7.49) 0.645 (16.38) 0.285 (7.24) 0.275 (6.99 0.100 (2.54) BSC 0.015 (0.38) MIN 0.180 (4.57) MAX 0.150 (3.81) 0.130 (3.30) SEATING PLANE 0.022 (0.56) 0.060 (1.52) 0.110 (2.79) ...

  • Page 15

    MAX MIN 0.220 (5.59 PIN 0.060 (1.52) 0.200 (5.08) 0.840 (21.34) MAX 0.015 (0.38) MAX 0.150 (3.81) MIN 0.200 (5.08) 0.125 (3.18) SEATING 0.100 0.070 (1.78) PLANE (2.54) 0.023 ...

  • Page 16

    ADM231L–ADM234L/ADM236L–ADM241L 1.290 (32.77) 1.150 (31.57 0.580 (14.73) 0.485 (12.32 PIN 1 0.015 (0.38) MIN 0.210 (5.34) MAX 0.200 (5.08) 0.115 (2.92) SEATING 0.100 0.022 (0.56) 0.070 (1.78) PLANE (2.54) 0.018 (0.46) 0.030 (0.76) BSC 0.014 (0.36) ...

  • Page 17

    ORDERING GUIDE Model Temperature Range ADM231LJN 0°C to 70°C ADM231LJR 0°C to 70°C ADM231LJR-REEL 0°C to 70°C ADM231LJRZ-REEL 1 0°C to 70°C ADM231LAN –40°C to +85°C ADM231LAQ –40°C to +85°C ADM231LAR –40°C to +85°C ADM231LAR-REEL –40°C to +85°C ADM232LJR 0°C ...

  • Page 18

    ADM231L–ADM234L/ADM236L–ADM241L Model Temperature Range ADM238LAN –40°C to +85°C ADM238LAQ –40°C to +85°C ADM238LAR –40°C to +85°C ADM238LAR-REEL –40°C to +85°C ADM238LARZ 1 –40°C to +85°C ADM238LARZ-REEL 1 –40°C to +85°C ADM239LJN 0°C to 70°C ADM239LJR 0°C to 70°C ADM239LJR-REEL 0°C ...

  • Page 19

    NOTES ADM231L–ADM234L/ADM236L–ADM241L Rev Page ...

  • Page 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 Page ...

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