LTC2857CDD-1#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2857CDD-1#TRPBF is a low-power, full-duplex RS485/RS422 transceiver operating on a 5V supply. It supports a maximum data rate of 20Mbps and features a one-eighth unit load receiver input resistance exceeding 96kΩ, enabling up to 256 nodes per bus. The device includes enhanced ESD protection rated at ±15kV HBM, current-limited drivers with thermal shutdown, and guaranteed failsafe operation ensuring a high output state during floating or shorted inputs. It is housed in an 8-lead 3mm × 3mm DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication capability without separate enable pins
• High input impedance supporting extensive node counts on the bus
• Robust protection against electrostatic discharge and bus faults

Drivers, Receivers, Transceivers Applications

• Low power RS485/RS422 transceivers
• Level translators
• Backplane transceivers

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging for automated assembly. Confirm the DD designation corresponds to the 8-lead plastic DFN package. Ensure the C grade matches the required commercial temperature range specifications for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component when full-duplex operation is required alongside high node density capabilities. The 20Mbps data rate suits high-speed serial communication needs. Verify that the 5V supply voltage aligns with the system design constraints and that the DFN package footprint fits the available PCB real estate.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC285x family of low-power transceivers. It shares core architectural features with half-duplex variants like the LTC2856 but provides independent transmit and receive channels. The family emphasizes robust fault protection and high common-mode rejection for industrial environments.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2857CDD-1#PBF (Tube Packaging)

Drivers, Receivers, Transceivers FAQ

What is the receiver input resistance?

The receiver input resistance is greater than 96kΩ, representing a one-eighth unit load.

How does the device handle floating inputs?

It guarantees a high output state under conditions of floating or shorted inputs due to its failsafe feature.

What is the maximum ESD rating?

The device withstands ±15kV human body model ESD on the interface pins without latchup or damage.