LTC2850CDD#PBF

Drivers, Receivers, Transceivers Overview

The LTC2850CDD#PBF is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. It operates on a 3V to 3.6V supply and supports data rates up to 20Mbps. The device features a one-eighth unit load receiver input resistance exceeding 96kΩ, enabling support for up to 256 nodes per bus. Key electrical parameters include a typical receive mode current of 370µA and a maximum shutdown current of 5µA. It incorporates enhanced ESD protection rated at ±15kV (HBM), thermal shutdown, and current-limited drivers. The component is housed in an 8-lead plastic DFN package measuring 3mm × 3mm.

Drivers, Receivers, Transceivers Feature Summary

• High input impedance receiver supporting up to 256 nodes per bus
• Enhanced ESD protection withstands ±15kV human body model without latchup
• Guaranteed failsafe operation ensuring high output state during floating or shorted inputs
• Power-up/down glitch-free driver outputs with delayed micropower shutdown

Drivers, Receivers, Transceivers Applications

• Low power RS-485/RS-422 transceivers
• Level translator circuits
• Backplane transceiver applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free construction. Confirm the DD package designation corresponds to the 8-lead plastic DFN form factor. Ensure the C temperature grade matches the required commercial operating range of 0°C to 70°C. Cross-reference the datasheet revision history for any updates to absolute maximum ratings or electrical characteristics prior to final procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this part for half-duplex communication requirements where low static power consumption is critical. The C-grade temperature rating limits suitability to commercial environments; consider I-grade or H-grade variants for industrial or automotive ranges. Verify that the 20Mbps maximum data rate aligns with system timing constraints. Ensure the 3.3V supply voltage remains within the specified 3V to 3.6V operational window for optimal performance.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2850/LTC2851/LTC2852 family of 3.3V, 20Mbps RS-485/RS-422 transceivers. The LTC2850 specifically denotes the half-duplex variant with separate enable controls. Other family members include the full-duplex LTC2851 and the full-duplex LTC2852 with enables. All share similar core electrical specifications but differ in duplex capability and package pinouts.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.