LT1280A Datasheet and Product Info | Analog Devices
LT1280A
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LT1280A

Low Power 5V RS232 Dual Driver/Receiver with 0.1µF Capacitors

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Part Models 6
1ku List Price Starting From $3.91
Features
  • 10mA Max Supply Current
  • ESD Protection over ±10kV
  • Uses Small Capacitors: 0.1µF
  • 120kBaud Operation for RL = 3k, CL = 2500pF
  • 250kBaud Operation for RL = 3k, CL = 1000pF
  • Outputs Withstand ±30V Without Damage
  • CMOS Comparable Low Power: 40mW
  • Operates from a Single 5V Supply
  • Rugged Bipolar Design
  • Outputs Assume a High Impedance State When Off or Powered Down
  • Meets All RS232 Specifications
  • Available With or Without Shutdown
  • Absolutely No Latch-up
  • Available in SO Package
Additional Details
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The LT1280A/LT1281A are dual RS232 driver/receiver pairs with integral charge pump to generate RS232 voltage levels from a single 5V supply. These circuits feature rugged bipolar design to provide operating fault tolerance and ESD protection unmatched by competing CMOS designs. Using only 0.1µF external capacitors, these circuits consume only 40mW of power, and can operate to 120kbaud even while driving heavy capacitive loads. New ESD structures on the chip allow the LT1280A/LT1281A to survive multiple ±10kV strikes, eliminating the need for costly TransZorbs® on the RS232 line pins. The LT1280A/LT1281A are fully compliant with EIA RS232 standards. Driver outputs are protected from overload, and can be shorted to ground or up to ±30V without damage. During shutdown or power-off conditions, driver and receiver outputs are in a high impedance state, allowing line sharing.

The LT1281A is available in 16-pin DIP and SO packages. The LT1280A is supplied in 18-pin DIP and SO packages for applications which require shutdown.

Applications

  • Portable Computers
  • Battery-Powered Systems
  • Power Supply Generator
  • Terminals
  • Modems
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Part Models 6
1ku List Price Starting From $3.91
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LT1280A

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UPDATED Aug 23, 2007
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LT1280A/LT1281A: Low Power 5V RS232 Dual Driver/Receiver with 0.1µF Capacitors Data Sheet

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UPDATED Mar 23, 2018
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT1280ACN#PBF 18-Lead PDIP (Narrow 0.3 Inch) external-link
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LT1280ACSW#PBF 18-Lead SOIC (Wide 0.3 Inch) external-link
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LT1280ACSW#TRPBF 18-Lead SOIC (Wide 0.3 Inch) external-link
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LT1280AIN#PBF 18-Lead PDIP (Narrow 0.3 Inch) external-link
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LT1280AISW#PBF 18-Lead SOIC (Wide 0.3 Inch) external-link
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LT1280AISW#TRPBF 18-Lead SOIC (Wide 0.3 Inch) external-link
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Mar 7, 2019

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Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek

LT1280ACN#PBF

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LT1280AIN#PBF

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PCN19_0046_Form

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Detailed Change Description

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Qualification Results Summary

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Aug 10, 2022

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Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1280ACSW#PBF

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LT1280ACSW#TRPBF

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LT1280AISW#PBF

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LT1280AISW#TRPBF

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Delta Qualification Matrix

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PCN

Mar 7, 2019

- 19_0046

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Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek

LT1280ACN#PBF

PRODUCTION

LT1280AIN#PBF

PRODUCTION

pdf

PCN19_0046_Form

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xls

Material_Report

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Detailed Change Description

pdf

Qualification Results Summary

external-icon
Aug 10, 2022

- 22_0176

arrow down

Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1280ACSW#PBF

PRODUCTION

LT1280ACSW#TRPBF

PRODUCTION

LT1280AISW#PBF

PRODUCTION

LT1280AISW#TRPBF

PRODUCTION

pdf

PCN22_0176_Form

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xls

Material_Report

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xlsm

Delta Qualification Matrix

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Parts Product Life Cycle Description

Isolated RS-2321
LTM2882
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Dual Isolated RS232 μModule Transceiver + Power

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