LTC1487CS8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1487CS8#PBF is an ultra-low power RS-485/RS-422 differential line transceiver in an 8-lead SOIC package. It operates on a single 5V supply with typical quiescent current of 120mA (driver enabled) and 80mA (driver disabled), dropping to 1mA in shutdown mode. The device supports up to 256 transceivers on the bus due to high input impedance (96kΩ). Key electrical parameters include a common-mode range of –7V to 12V, ESD protection of –10kV (HBM), and a maximum data rate of 250kbps. It features controlled slew rates for low EMI, thermal shutdown protection, and glitch-free power-up outputs.

Drivers, Receivers, Transceivers Feature Summary

• High input impedance allows connection of up to 256 transceivers on a single bus
• Controlled slew rate driver reduces electromagnetic interference and improves signal fidelity
• Thermal shutdown circuit prevents excessive power dissipation during fault conditions
• Glitch-free driver outputs permit live insertion or removal without system disruption

Drivers, Receivers, Transceivers Applications

• Battery-powered RS-485/RS-422 communication systems
• Low power industrial fieldbus networks
• Level translation between logic and differential lines

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix CS8 corresponds to the commercial temperature grade (0°C to 70°C) and SOIC-8 package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ordering codes match the exact pinout and electrical specifications required for the target design.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high node density on RS-485 buses due to its 0.125 unit load characteristic. Consider the 250kbps maximum data rate and 5V supply requirement. Evaluate the need for thermal shutdown protection in environments prone to bus contention or short circuits compared to standard transceivers.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1487 family of ultra-low power differential transceivers. It is pin-compatible with the LTC485 but offers significantly lower power consumption and higher input impedance. The series is designed for applications where power efficiency and bus loading are critical constraints.

Drivers, Receivers, Transceivers Replacement Considerations

LTC485CS8#PBF: Pin-compatible alternative with different power and impedance characteristics.