LTC2856CDD-1#PBF

Drivers, Receivers, Transceivers Overview

The Analog Devices LTC2856CDD-1#PBF is a low-power, half-duplex RS485/RS422 transceiver operating on a 5V supply. It supports a maximum data rate of 20Mbps and features enhanced ESD protection capable of withstanding ±15kV (HBM) without latchup. The device incorporates a one-eighth unit load receiver input resistance exceeding 96kΩ, supporting up to 256 nodes per bus. It includes current-limited drivers and thermal shutdown for fault protection. The component operates within a commercial temperature range of 0°C to 70°C and is housed in an 8-lead 3mm × 3mm DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Enhanced electrostatic discharge protection withstands ±15kV human body model stress without damage or latchup.
• High input impedance receiver supports up to 256 nodes on the bus line while maintaining failsafe operation.
• Integrated thermal shutdown and current limiting protect against excessive power dissipation during bus contention.

Drivers, Receivers, Transceivers Applications

• Low EMI industrial communication networks
• Multipoint RS485/RS422 bus systems
• Backplane transceiver interfaces

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 compliance and RoHS adherence. Ensure the C-grade specification aligns with the intended commercial operating environment requirements before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high node density due to its one-eighth unit load receiver characteristic. The 20Mbps data rate suits standard RS485/RS422 implementations. Consider the H-grade variant if operation beyond 70°C is necessary. Verify that the 5V supply voltage requirement fits the system design constraints.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2856 family of low-power RS485/RS422 transceivers. It is distinguished by its half-duplex configuration and 20Mbps speed rating. The CDD-1 suffix specifies the commercial temperature range and 8-lead DFN packaging. Other variants include full-duplex models and slew-rate limited versions for reduced emissions.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2856CMS8-1#PBF offers identical electrical specifications but utilizes an MSOP-8 package instead of the DFN-8 form factor. Designers must verify pinout compatibility and thermal performance differences when substituting between package types.