LTC2861IDE#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2861IDE#TRPBF is a low-power, full-duplex RS485/RS422 transceiver operating on a 5V supply. It features a logic-selectable 120Ω termination resistor and supports up to 256 nodes per bus with one-eighth unit load input impedance. The device offers a maximum data rate of 20Mbps and includes a failsafe receiver that guarantees a high output state during floating or shorted inputs. Driver outputs are current-limited with thermal shutdown protection. Enhanced ESD protection withstands ±15kV (HBM). It operates within an industrial temperature range of –40°C to +85°C and is housed in a 12-lead 4mm × 3mm DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated switchable 120Ω termination resistor controlled by the TE pin
• Logic-selectable low-EMI mode limiting data rate to 250kbps via SLO pin
• Guaranteed failsafe receiver operation ensuring high output under fault conditions
• High input impedance supporting up to 256 nodes on the bus

Drivers, Receivers, Transceivers Applications

• Level translator applications requiring RS485/RS422 compatibility
• Backplane communication systems utilizing multi-node networks
• Industrial environments requiring robust ESD protection and failsafe operation

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package and temperature grade. The #TRPBF suffix indicates tape and reel packaging for surface mount assembly. Confirm the I-grade designation aligns with the intended operational temperature range requirements for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component when full-duplex communication is required alongside integrated line termination capabilities. The 12-lead DFN package suits space-constrained designs. Ensure the system design accommodates the 5V supply voltage and considers the 20Mbps data rate limits for optimal signal integrity across the selected cable length.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2859/LTC2861 family of low-power RS485/RS422 transceivers. While the LTC2859 provides half-duplex functionality in a smaller footprint, the LTC2861 offers full-duplex operation with separate transmit and receive channels. Both share identical electrical characteristics regarding termination, ESD protection, and power consumption profiles.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2859IDE#TRPBF serves as a functional alternative if half-duplex operation suffices, offering a reduced pin count in a 10-lead DFN package. Other family members like the LTC2861IGN#TRPBF provide the same electrical performance but utilize a 16-lead SSOP package for different board layout constraints.