LTC2859IDD#PBF

Drivers, Receivers, Transceivers Overview

The LTC2859IDD#PBF is a low-power, half-duplex RS-485/RS-422 transceiver operating on a 5V supply (4.5V to 5.5V). It supports data rates up to 20Mbps and features an integrated logic-selectable 120Ω termination resistor. The device includes a failsafe receiver that guarantees a high output state under floating or shorted input conditions. It offers enhanced ESD protection of ±15kV HBM without latchup. The package is a 10-lead 3mm × 3mm DFN with an exposed thermal pad. Operating temperature range is -40°C to +85°C.

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 during bus faults
• High input impedance supporting up to 256 nodes per bus

Drivers, Receivers, Transceivers Applications

• Multi-node RS-485 networks requiring end-of-line termination control
• Industrial automation systems with strict EMI emission requirements
• Backplane communication interfaces in embedded systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package and temperature grade. Confirm RoHS compliance status through official manufacturer documentation. Ensure the component source is authorized to guarantee authenticity and traceability for critical industrial applications.

Drivers, Receivers, Transceivers Selection Notes

Select this part for half-duplex applications requiring integrated line termination. Compare against the full-duplex LTC2861 if separate transmit and receive lines are needed. Consider the LTC2859H for extended temperature ranges up to 105°C. Verify power supply voltage compatibility with the 4.5V to 5.5V operating range.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2859/LTC2861 family of 20Mbps RS-485/RS-422 transceivers. It shares core functionality with the LTC2861 but differs in duplex configuration and package options. The family emphasizes low power consumption and integrated termination capabilities for simplified PCB layout.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2859CDD#PBF: Same function, commercial temperature grade (0°C to 70°C). LTC2859HDD#PBF: Same function, extended temperature grade (-40°C to 105°C). LTC2861IDE#PBF: Full-duplex variant in 12-lead DFN package.