AD Analog Devices ADM3232E Data Sheet Manual
Summary
This low-power transceiver is a robust interface solution for converting signals between single 3.3V supplies and industry-standard RS-232/V.28 levels up to 460 kbps. Featuring high immunity with ±15 kV ESD protection, it ensures reliable data transmission even in electrically harsh or field-service environments. The manual provides comprehensive guidance for designers, covering the functional block diagram, detailed technical specifications, and applications across portable instruments, general purpose links, and industrial/telecom diagnostics requiring maximum battery life.
Page 1 Text Content
±15 k V ESD Protected, 3.3 V, RS-232
Line Driver/Receiver
ADM3232E FEATURES FUNCTIONAL BLOCK DIAGRAM
+3.3V INPUT
Data rate: 460 kbps
2 Tx and 2 Rx ADM3232E C1 +3.3V TO +6.6V Meets EIA-232E specifications C1+ VCC 0.1µF VOLTAGE C3 C5 C1– DOUBLER V+
0.1 μF charge pump capacitors 10V 0.1µF 0.1µF 6.3V
C2 C2+ +6.6V TO –6.6V V–
ESD protection to IEC 1000-4-2 (801.2) on TTL/CMOS and C4
0.1µF VOLTAGE
RS-232 I/Os 10V INVERTER
Contact discharge: ±8 k V
T1IN T1 T1OUT
Air gap discharge: ±15 k V TTL/CMOS RS-232 INPUTS OUTPUTS
T2IN T2 T2OUT
APPLICATIONS
R1OUT R1 R1IN
General-purpose RS-232 data link TTL/CMOS 5kΩ RS-232
OUTPUTS INPUTS*
Portable instruments
R2OUT R2 R2IN
Handsets
Industrial/telecom diagnostic ports GND
*INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 1.
GENERAL DESCRIPTION
The ADM3232E transceiver is a high speed, 2-channel RS-232/V.28 Emissions are also controlled to within very strict limits. CMOS interface device that operates from a single 3.3 V power supply. technology is used to keep the power dissipation to an absolute
Low power consumption makes it ideal for battery-powered www.BDTIC.com/ADI minimum, allowing maximum battery life in portable applications.
portable instruments. The ADM3232E conforms to the EIA-232E
Four external 0.1 μF charge pump capacitors are used for the
and ITU-T V.28 specifications and operates at data rates up to
voltage doubler/inverter, permitting operation from a single
460 kbps.
3.3 V supply.
All RS-232 (Tx OUT and Rx IN) and TTL/CMOS (Tx IN and Rx OUT)
The ADM3232E is available in a 16-lead narrow and wide SOIC
inputs and outputs are protected against electrostatic discharges
packages, as well as a space-saving 16-lead TSSOP.
(up to ±15 k V ESD protection). This ensures compliance with IEC 1000-4-2 requirements. This device is ideally suited for operation in electrically harsh environments or where RS-232 cables are frequently plugged/ unplugged, with the ±15 k V ESD protection of the ADM3232E input/output pins.
Rev. A 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
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
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. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2006–2008 Analog Devices, Inc. All rights reserved.
Page Summary Contents For AD Analog Devices ADM3232E Data Sheet Manual
Manual Details
| Brand | Analog Devices |
|---|---|
| Pages | 12 |
| File Size | 260.75 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
How is battery usage optimized for portable instruments?
It minimizes power dissipation by operating from a single 3.3 V supply, which allows for maximum battery life.
What level of ESD protection does the device offer?
The input/output pins feature ±15 kV ESD protection, making it ideal for electrically harsh or portable environments.
What is the maximum data rate and compatibility standard?
It supports symmetrical data rates up to 460 kbps (Tx and Rx) and conforms to EIA-232E specifications.