LTC2845IUHF#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2845IUHF#TRPBF is a multiprotocol transceiver featuring five drivers and five receivers, designed for software-selectable serial interfaces. It supports RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 protocols. The device operates from a single 3.3V supply (VCC) with logic inputs compatible with 3.3V (VIN). It provides integrated cable termination for various electrical standards including V.10, V.11, and V.28. The component is housed in a 38-lead QFN package measuring 7mm x 5mm and is rated for an industrial operating temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable protocol support for multiple serial interface standards via mode select pins.
• Integrated on-chip cable termination networks eliminating the need for discrete switching components.
• Fail-safe receiver operation ensuring high output states during floating or shorted input conditions.
• No-cable mode functionality that reduces supply current and forces driver outputs to high impedance when disconnected.

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 IUHF corresponds to the 38-lead QFN package and the extended industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the design accommodates the required external capacitors for the companion charge pump circuitry if used in a complete port configuration.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a compact solution for multiprotocol serial communication is required without discrete termination resistors. It is suitable for designs needing DTE or DCE configurability via software control. Ensure the system power architecture supports the 3.3V logic levels and consider pairing with the LTC2846 or LTC2847 for full voltage generation capabilities.

Drivers, Receivers, Transceivers Part Context

This part belongs to the Analog Devices multiprotocol transceiver family, specifically engineered for versatile serial port implementations. It complements companion chips like the LTC2846 or LTC2847 to form complete interface ports. The device addresses the complexity of managing multiple legacy and modern serial standards within a single integrated circuit footprint.

Drivers, Receivers, Transceivers Replacement Considerations

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

Drivers, Receivers, Transceivers FAQ

How is the interface protocol selected?

The protocol is selected using three mode select pins (M0, M1, M2) which configure the internal drivers and receivers for specific standards such as RS232, V.35, or X.21.

What is the function of the No-Cable Mode?

When activated, this mode turns off bias circuitry and drivers, forcing outputs to high impedance and reducing supply current to less than 700µA, intended for use when no cable is connected.

Does the device support fail-safe operation?

Yes, all receivers feature fail-safe operation, forcing the output to a logic high state if the inputs are left floating or shorted together.