LTC1387CG#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1387CG#TRPBF is a low-power, reconfigurable CMOS bidirectional transceiver manufactured by Analog Devices Inc. It operates from a single 5V supply and can be configured as one RS485 differential port or two RS232 single-ended ports using an onboard charge pump that requires four 0.1µF capacitors. The device supports data rates up to 5MBd in fast slew mode and 150kBd in slow slew mode for RS485 applications. Typical supply current is 7mA, reducing to 5mA in shutdown mode. It features short-circuit and thermal shutdown protection, receiver inputs withstandable to -25V, and a loopback mode for diagnostic self-testing.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable multiprotocol interface supporting RS485/RS422 or dual RS232/EIA562 configurations
• Onboard charge pump generates boosted positive and negative supplies from a single 5V source
• Logic-selectable fast or slow RS485 driver slew rate to minimize EMI and signal reflections
• Receiver outputs maintain a known high state when inputs are floating or shorted to ground

Drivers, Receivers, Transceivers Applications

• Point-of-sale terminals
• Cable repeaters
• Level translators
• Low power RS485/RS422/RS232/EIA562 interfaces

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. The CG suffix indicates a plastic SSOP-20 package with a commercial operating temperature range of 0°C to 70°C. Confirm RoHS compliance status and ensure the component matches the required pinout and electrical specifications for the target design before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single-port transceiver must support multiple communication standards via software configuration. It is suitable for designs requiring reduced bill of materials by combining RS232 and RS485 capabilities. Ensure the application utilizes external 0.1µF capacitors for the charge pump and verify that the system logic levels match the specified input thresholds for reliable operation.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1387 series of single-supply multiprotocol transceivers. It shares functional similarities with other configurable interface ICs but is distinct in its ability to switch between differential and single-ended modes within a single package. The series includes variants with different packages and temperature ratings, such as the SW (SOIC) and I-grade versions.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers include LTC1387CSW#TRPBF, which offers the same functionality in a 20-SOIC package. Other related parts like LTC1320 or LTC1334 provide similar interface capabilities but may differ in specific pinouts or supported protocols.