LINEAR 2PB_2882e RS232 Isolation Module + 1W Power Supply User Manual
Summary
The LTM2882 is a highly reliable, isolated RS232 transceiver µModule designed for demanding applications requiring exceptional protection against ground loops and large electrical differentials (up to 2500V isolation). This self-contained solution integrates the transceiver, an onboard DC/DC converter (providing isolated 3.3V or 5V power), and all necessary components, eliminating the need for external circuit parts. The manual guides engineers in utilizing this compact, industry-leading module for robust, high-speed, and failure-proof isolated serial data communication across various challenging environments.
Page 1 Text Content
Isolated RS232 + 1W Power 3.3V or 5V
Power 5VREGIsolated
T1IN T1OUT
R1OUT R1IN
RS232
T2IN T2OUT BUS
R2OUT R2IN
LTM2882
Galvanic Isolation
Complete 1Mbps µModule® Transceiver Includes 2500VRMS Isolated Power— No External Components Required The LTM®2882 is an isolated RS232 transceiver that guards against large ground-to-ground differentials. The LTM2882’s internal inductive isolation barrier breaks ground loops by isolating the logic level interface and line transceiver. An onboard DC/DC converter provides power to the transceiver, with an isolated 5V supply output for powering additional system circuitry. With 2500VRMS galvanic isolation, onboard secondary power and two RS232 drivers and receivers, the LTM2882 requires no external components and provides a small, complete µModule solution for isolated serial data communications.
Features LTM2882 Demo Board
n Isolator µModule Technology
n Isolated RS232 Transceiver: 2500VRMS
n UL Recognized ®
File #E151738
n Integrated Isolated, 1W DC/DC Converter
n Good Efficiency (Up to 65%)
n Low EMI n 1.62V to 5.5V Logic Supply
n High Speed Operation
n 1Mbps for 250p F/3kΩ Load n 250kbps for 1n F/3kΩ Load
n 100kbps for 2.5n F/3kΩ TIA/EIA-232-F Load n 3.3V (LTM2882-3) or 5V (LTM2882-5) Operation
n No Damage or Latchup to ±10k V ESD HBM on Isolated
RS232 Interface and Across Isolation Barrier n High Common Mode Transient Immunity: >30k V/µs
n Low Profile Surface Mount (15mm × 11.25mm × 2.8mm)
LGA and (15mm × 11.25mm × 3.7mm) BGA Packages
L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks and Isolator logo is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Page Summary Contents For LINEAR 2PB_2882e RS232 Isolation Module + 1W Power Supply User Manual
Manual Details
| Brand | Linear |
|---|---|
| Pages | 2 |
| File Size | 329.56 KB |
| Published | June 01, 2026 |
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Frequently Asked Questions
What is the isolation level provided by the LTM2882?
It provides 2500V RMS galvanic isolation and safeguards against large ground-to-ground differentials.
Does this module require external components for power or operation?
No, it requires no RMS external components. An onboard DC/DC converter handles the necessary power supply.
What speeds can the LTM2882 operate at different loads?
It supports 1Mbps (for 250pF/3kΩ Load), 250kbps, and 100kbps depending on the load capacitance.
Which voltages are available for this transceiver module?
The LTM2882 is available for 3.3V (LTM2882-3) or 5V (LTM2882-5) operation.