LTC1690CMS8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1690CMS8#PBF is a low-power differential driver and receiver pair compatible with RS485 and RS422 standards, housed in an 8-lead MSOP package. It operates on a single 5V supply (4.75V to 5.25V) and supports data rates up to 5 Mbps. The device features a fail-safe receiver that guarantees a high output state when inputs are floating or shorted. Driver outputs are protected against short circuits with current limited to 250mA maximum, and thermal shutdown activates if die temperature exceeds 150°C. The component provides –15kV ESD protection on driver outputs and receiver inputs.

Drivers, Receivers, Transceivers Feature Summary

• Fail-safe receiver design ensures a logic high output state when inputs are left open, shorted together, or terminated without a signal present.
• Integrated thermal shutdown circuit protects the driver from excessive power dissipation by forcing outputs into a high impedance state during fault conditions.
• Robust ESD protection meets IEC1000-4-2 Level 4 contact and Level 3 air discharge specifications without requiring external suppressors.
• Glitch-free power-up and power-down driver outputs permit live insertion or removal of the transceiver on the bus.

Drivers, Receivers, Transceivers Applications

• Battery-powered RS485/RS422 communication systems
• Low power industrial RS485/RS422 transceivers
• Level translation between different voltage domains
• Line repeater applications for extended cable distances

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix CMS8 corresponds to the commercial temperature range and MSOP package configuration. Confirm RoHS compliance status through official documentation before integration. Ensure the ordering part number matches the required pinout and electrical characteristics for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component for full-duplex applications requiring separate driver and receiver pins. It is suitable for driving low-cost residential telephone wires and standard twisted pair cables. Consider the 600µA maximum supply current for power-sensitive designs. Verify compatibility with existing bus architectures requiring up to 32 transceivers.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC1690 family of differential drivers and receivers. It is pin-compatible with the SN75179 and LTC490, facilitating direct upgrades or replacements in legacy designs. The series includes variants for industrial temperature ranges and different packaging options such as SO and PDIP.

Drivers, Receivers, Transceivers Replacement Considerations

Pin-compatible substitutes include the SN75179 and LTC490. For lower power requirements, consider the LTC1481 or LTC1483. Higher speed alternatives like the LTC1685/LTC1686 offer 52Mbps performance while maintaining similar form factors.