LTC2856CMS8-2#PBF

Drivers, Receivers, Transceivers Overview

The LTC2856CMS8-2#PBF is a low-power, half-duplex RS485/RS422 transceiver manufactured by Analog Devices Inc. It operates on a single 5V supply and supports a maximum data rate of 250kbps with slew-rate limiting to minimize electromagnetic interference. The device features a one-eighth unit load receiver input impedance, enabling support for up to 256 nodes per bus in the C and I grades. It includes enhanced ESD protection rated at ±15kV (HBM), current-limited drivers, and thermal shutdown capabilities. The component is housed in an 8-lead MSOP package and functions within a commercial temperature range of 0°C to 70°C.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited driver outputs reduce high-frequency EMI emissions for compliant communication.
• High input impedance receiver design allows connection of up to 256 nodes on a single bus line.
• Integrated failsafe mechanism guarantees a logic-high output state when inputs are floating or shorted.

Drivers, Receivers, Transceivers Applications

• Low EMI industrial fieldbus networks requiring strict emission limits
• Multipoint communication systems utilizing standard RS485 protocols
• Bus lines supporting high node density configurations

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements and interface standards before integration. Cross-reference part markings with datasheet specifications to validate authenticity and revision status during acquisition.

Drivers, Receivers, Transceivers Selection Notes

Select this variant over the -1 version when minimizing electromagnetic interference is critical, as it restricts data rates to 250kbps via slew limiting. Confirm that the half-duplex architecture aligns with the bidirectional communication needs of the target application. Verify that the commercial temperature range meets environmental operating conditions.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2856 series of rugged RS485/RS422 transceivers designed for low power consumption and robust signal integrity. It shares architectural similarities with the full-duplex LTC2857 and LTC2858 families but is optimized for half-duplex applications requiring controlled signal edge rates.

Drivers, Receivers, Transceivers Replacement Considerations

Direct functional substitutes include other slew-rate limited RS485 transceivers from Analog Devices such as the LTC2857-2 or LTC2858-2, provided the duplex mode difference is accounted for. Verify pinout compatibility and package dimensions when replacing with devices from other manufacturers.