LTC2844CG#PBF

Drivers, Receivers, Transceivers Overview

The LTC2844CG#PBF is a 3.3V software-selectable multiprotocol transceiver housed in a 28-lead SSOP package. It operates from a single 3.3V supply and supports RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 protocols. The device integrates four drivers and four receivers to form a complete DTE or DCE interface port when paired with the LTC2846. It features internal cable termination switching for various electrical standards and includes a no-cable mode that reduces supply current below 600mA while forcing outputs to high impedance.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable protocol support for RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 via M0, M1, and M2 pins
• Integrated internal cable termination networks eliminating external switching components
• No-cable mode functionality that disables bias circuitry and forces driver outputs to high impedance
• Fail-safe receiver operation ensuring logic high output when inputs are floating or shorted

Drivers, Receivers, Transceivers Applications

• Data networking equipment requiring flexible serial interfaces
• Channel Service Unit (CSU) and Data Service Unit (DSU) implementations
• Data routers utilizing DB-25 connectors for multiprotocol connectivity

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix CG#PBF corresponds to the commercial temperature range of 0°C to 70°C. Confirm the package type is 28-lead SSOP. Ensure the component is sourced from authorized distributors to guarantee authenticity and compliance with RoHS directives as specified by Analog Devices Inc.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC2844CG#PBF for applications requiring a 3.3V supply and commercial temperature operation. This part must be paired with the LTC2846 to generate the necessary VDD and VEE voltages for full protocol support. Verify that the system design accommodates the 28-lead SSOP footprint and utilizes the M0-M2 pins for hardware-based protocol selection.

Drivers, Receivers, Transceivers Part Context

The LTC2844CG#PBF belongs to the LTC2844 series of multiprotocol transceivers. It is designed to work in conjunction with the LTC2846 to create a complete serial interface port. The 'CG' designation indicates the commercial temperature grade, distinguishing it from the industrial grade 'IG' variant which supports -40°C to 85°C.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC2844IG#PBF serves as a direct replacement for the LTC2844CG#PBF, offering an extended operating temperature range of -40°C to 85°C. Both parts share identical pinouts, electrical characteristics, and functionality within their respective temperature limits.