LTC2856HMS8-1#PBF

Drivers, Receivers, Transceivers Overview

The LTC2856HMS8-1#PBF is a low-power, half-duplex RS485/RS422 transceiver manufactured by Analog Devices Inc. It operates on a single 5V supply (4.5V to 5.5V) and supports a maximum data rate of 20Mbps. The device features enhanced ESD protection capable of withstanding ±15kV human body model discharges without latchup or damage. It incorporates a one-eighth unit load receiver input resistance exceeding 96kΩ, enabling support for up to 256 nodes per bus in C and I-grade applications. The component includes current-limited drivers and thermal shutdown protection to prevent excessive power dissipation during bus contention or faults.

Drivers, Receivers, Transceivers Feature Summary

• Enhanced ESD protection withstands ±15kV HBM on interface pins without latchup or damage
• High input impedance receiver supports up to 256 nodes per bus with guaranteed failsafe operation
• Current-limited drivers and thermal shutdown protect against bus contention and fault conditions
• Power-up/down glitch-free driver outputs ensure stable communication during state transitions

Drivers, Receivers, Transceivers Applications

• Low power RS485/RS422 transceivers
• Level translator circuits
• Backplane transceivers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm that the #PBF designation indicates lead-free construction and RoHS compliance as specified in the manufacturer's documentation. Ensure the procurement channel provides valid traceability for the Analog Devices Inc. brand. Cross-reference the part number against official distributor catalogs to confirm availability status and packaging format before finalizing orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring robust ESD protection and high node density on RS485 or RS425 networks. The half-duplex configuration suits systems where bidirectional communication occurs sequentially. Verify that the operating temperature range aligns with the system environment, noting that the 'H' suffix denotes an extended automotive temperature range compared to commercial grades. Ensure supply voltage constraints remain within the 4.5V to 5.5V window for optimal performance.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2856 series of low-power RS485/RS422 transceivers. It is distinguished from the LTC2857 and LTC2858 variants by its half-duplex operation mode. The MSOP-8 package provides a compact solution for space-constrained designs. The device shares core architectural features with other members of the family, such as thermal shutdown and high ESD tolerance, while differing in duplex capability and pinout configuration.

Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include other parts within the LTC2856 family, such as the LTC2856C or LTC2856I, depending on the required temperature grade. For full-duplex requirements, consider the LTC2857 series. Verify pin compatibility and electrical specifications when replacing with non-Analog Devices components to ensure functional equivalence.