LTC1387
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LTC1387

Single 5V RS232/RS485 Multiprotocol Transceiver

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Part Models 8
1ku List Price Starting From $5.66
Features
  • Two RS232 Transceivers or One RS485 Transceiver
  • Operates from a Single 5V Supply
  • Guaranteed Receiver Output with Inputs Floating or Shorted to Ground
  • Logic Selectable Fast/Slow RS485 Driver Slew Rate
  • Low Supply Current: 7mA Typical
  • 5µA Supply Current in Shutdown
  • Self-Testing Capability in Loopback Mode
  • Separate Driver and Receiver Enable Controls
  • Driver Maintains High Impedance in Three-State, Shutdown or with Power Off
  • Receiver Inputs Can Withstand ±25V
Additional Details
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The LTC1387 is a low power reconfigurable CMOS bidirectional transceiver. It can be configured as an RS485 differential port or as two RS232 single-ended ports. An onboard charge pump uses four 0.1µF capacitors to generate boosted positive and negative supplies, allowing the RS232 drivers to meet ±5V output swing requirements with only a single 5V supply. A shutdown mode reduces the ICC supply current to 5µA.

The RS232 transceivers are in full compliance with RS232 specification. The RS485 transceiver is in full compliance with RS485 and RS422 specifications. The RS485 receiver assumes a known output state when the inputs are floating or shorted to ground. All interface drivers feature short-circuit and thermal shutdown protection. An enable pin allows RS485 driver outputs to be forced into high impedance which is maintained even when the outputs are forced beyond supply rails or the power is off. A loop back mode allows the driver outputs to be connected back to the receiver inputs for diagnostic self-test.

The LTC1387 is available in 20-pin plastic SSOP and SW packages.

Applications

  • Point-of-Sale Terminals
  • Software Selectable Multiprotocol Interface Ports
  • Low Power RS485/RS422/RS232/EIA562 Interface
  • Cable Repeaters
  • Level Translators
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Part Models 8
1ku List Price Starting From $5.66
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LTC1387

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Data Sheet

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UPDATED 08/28/2007
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LTC1387: Single 5V RS232/RS485 Multiprotocol Transceiver Data Sheet

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UPDATED 02/21/2008
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LTC1387: 単一5V RS232/RS485 マルチプロトコル･トランシーバ データシート

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Application Note

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UPDATED 10/15/2007
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AN87 - Linear Technology Magazine Circuit Collection, Volume V: Data Conversion, Interface and Signal Conditioning Products redirect icon

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Reliability Data

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UPDATED 03/23/2018
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R277 Reliability Data redirect icon

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Design Note

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UPDATED 01/01/1998
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Design Note 176: LTC1387: 5V RS232/RS485 Multiprotocol Transceiver redirect icon

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Documentation

Product Selection Guide 1

Digital Isolation and Interface Technology Selection Guide

Product Selector Card 1

Multiprotocol Transceivers

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2020-10-28

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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
LTC1387CG#PBF 20-Lead SSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1387CG#TRPBF 20-Lead SSOP external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1387CSW#PBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1387CSW#TRPBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1387IG#PBF 20-Lead SSOP external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1387IG#TRPBF 20-Lead SSOP external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1387ISW#PBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1387ISW#TRPBF 20-Lead SOIC (Wide 0.3 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

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Product Lifecycle

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Aug 6, 2022

- 22_0171

Laser Top Mark Conversion for SSOP Packages Assembled in PNG

LTC1387CG#PBF

PRODUCTION

LTC1387CG#TRPBF

PRODUCTION

LTC1387IG#PBF

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LTC1387IG#TRPBF

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PCN22_0171_Form

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Material_Report

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Delta Qualification Matrix

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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

LTC1387CSW#PBF

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LTC1387CSW#TRPBF

PRODUCTION

LTC1387ISW#PBF

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LTC1387ISW#TRPBF

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PCN22_0176_Form

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Material_Report

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Delta Qualification Matrix

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PCN

Aug 6, 2022

- 22_0171

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Laser Top Mark Conversion for SSOP Packages Assembled in PNG

LTC1387CG#PBF

PRODUCTION

LTC1387CG#TRPBF

PRODUCTION

LTC1387IG#PBF

PRODUCTION

LTC1387IG#TRPBF

PRODUCTION

pdf

PCN22_0171_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download
Aug 10, 2022

- 22_0176

arrow down

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

LTC1387CSW#PBF

PRODUCTION

LTC1387CSW#TRPBF

PRODUCTION

LTC1387ISW#PBF

PRODUCTION

LTC1387ISW#TRPBF

PRODUCTION

pdf

PCN22_0176_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

Software & Part Ecosystem

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Multiprotocol Transceivers1
LTC2870
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RS232/RS485 Multiprotocol Transceivers with Integrated Termination

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