LTC2845IG#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2845IG#TRPBF is a 5-driver/5-receiver multiprotocol transceiver designed for software-selectable serial interfaces. It supports RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 protocols when paired with the LTC2846 or LTC2847. The device operates from a single 3.3V supply (LTC2845C: 0°C to 70°C; LTC2845I: -40°C to 85°C). Key electrical parameters include a typical VCC supply current of 2.7 mA (no load) and 150 mA (full load in RS530/X.21 modes), a VEE supply current of up to 34 mA, and a VDD supply current of up to 13.5 mA. Driver rise/fall times are typically 21 ns to 25 ns.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable multiprotocol support for RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21
• Integrated cable termination eliminating discrete design requirements
• Fail-safe receiver operation forcing logic high on floating inputs
• No-cable mode reduces supply current below 700 µA and forces outputs to high impedance

Drivers, Receivers, Transceivers Applications

• Data networking equipment
• Channel Service Unit/Data Service Unit (CSU/DSU)
• Data routers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm package type and temperature range. Ensure the component matches the required DTE or DCE configuration by checking the mode select pin definitions. Confirm that the associated power management IC (LTC2846 or LTC2847) is included in the system design as the LTC2845 requires external voltage generation.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC2845IG variant for industrial temperature ranges (-40°C to 85°C). Pair with the LTC2846 for integrated charge pump and boost regulator capabilities, or use the LTC2847 if an external 5V supply is available. Verify that the application requires the 36-lead SSOP or 38-lead QFN package form factor suitable for space-constrained designs.

Drivers, Receivers, Transceivers Part Context

The LTC2845 functions as the control signal transceiver within a complete serial interface port solution. It complements the LTC2846 or LTC2847, which handle clock and data signals. This chipset combination allows for a compact, software-configurable DTE or DCE port implementation without the need for bulky mechanical switching resistors.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.