LTC1546CG#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1546CG#TRPBF is a 3-driver/3-receiver multiprotocol transceiver with on-chip cable termination, operating from a single 5V supply. It supports RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 protocols via software-selectable mode pins (M0-M2). The device integrates an internal charge pump requiring five surface-mounted capacitors to generate VDD and VEE supplies. It operates within a commercial temperature range of 0°C to 70°C and is housed in a 28-lead SSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable multiprotocol support for RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 interfaces
• Integrated on-chip cable termination eliminates external discrete resistor networks
• Internal charge pump generates required dual supplies using only five small surface-mount capacitors
• Fail-safe receiver operation ensures logic high output when inputs are floating or shorted

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering suffix #TRPBF indicates tape-and-reel packaging configuration. Confirm the 'C' suffix denotes the commercial temperature range (0°C to 70°C). Ensure compatibility with existing PCB footprints if replacing LTC1543 components, as the device is pin-compatible. Validate that the 28-lead SSOP package matches the design constraints.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a complete DTE or DCE interface port is required alongside the LTC1544. It is suitable for designs needing automatic cable termination switching without mechanical relays. Consider the no-cable mode feature for power reduction when cables are disconnected. Verify that the single 5V supply constraint meets the system power architecture.

Drivers, Receivers, Transceivers Part Context

The LTC1546 functions as the data signal half of a multiprotocol interface chipset, typically paired with the LTC1544 which handles control signals. Together they replace separate transceivers like the LTC1543 and LTC1344A. The device is TUV Telecom Services Inc. certified for NET1, NET2, and TBR2 compliance, ensuring adherence to specific telecom standards.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed direct substitute: LTC1543. The LTC1546 is pin-compatible with the LTC1543 and often replaces both an LTC1543 and an LTC1344A in existing designs without PCB changes.