LTC2858IDD-2#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2858IDD-2#TRPBF is a low-power, full-duplex RS485/RS422 transceiver operating on 5V supplies. It features a maximum data rate of 250kbps with slew-rate limiting for low EMI applications. The receiver provides a one-eighth unit load, supporting up to 256 nodes per bus in C and I grades, and includes a failsafe feature ensuring a high output state during floating or shorted input conditions. Enhanced ESD protection withstands ±15kV (HBM) without latchup. The driver maintains high output impedance when disabled and incorporates current limiting and thermal shutdown for fault protection. Operating temperature ranges are 0°C to 70°C for C-grade, –40°C to 85°C for I-grade, and –40°C to 125°C for H-grade.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex operation with independent transmit and receive channels
• Slew-rate limited driver outputs for reduced electromagnetic interference emissions
• High input impedance receiver supporting extensive network node counts
• Integrated failsafe mechanism guarantees logic-high output under undefined input states

Drivers, Receivers, Transceivers Applications

• Low EMI industrial communication networks
• Multi-drop RS485 bus systems requiring high node density
• Backplane transceivers with strict signal integrity requirements

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging configuration. Confirm the IDD designation corresponds to the Industrial temperature grade (-40°C to 85°C). Ensure compatibility with 5V supply rails as specified in the absolute maximum ratings. Cross-reference the datasheet revision date against manufacturing lot codes for updated package markings.

Drivers, Receivers, Transceivers Selection Notes

Select this component when full-duplex communication is required alongside low EMI constraints. The 250kbps limit distinguishes it from the -1 variant which supports 20Mbps. Verify that the 5V supply voltage aligns with system power architecture. Consider the DFN-10 package footprint for board space optimization compared to MSOP alternatives.

Drivers, Receivers, Transceivers Part Context

This device belongs to the LTC2858 family of low-power RS485/RS422 transceivers. It shares architectural similarities with the LTC2856 and LTC2857 series but offers full-duplex capability unlike the half-duplex LTC2856. The -2 suffix denotes the slew-rate limited version, contrasting with the high-speed -1 variant within the same package lineup.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2858CDD-2#PBF: Same functional specifications but available in tube packaging instead of tape and reel.

Drivers, Receivers, Transceivers FAQ

What is the maximum data rate for the LTC2858-2 variant?

The maximum data rate is 250kbps due to the integrated slew-rate limiting circuitry designed to minimize EMI.

How does the failsafe feature operate?

The receiver guarantees a high output state when inputs are floating, shorted, or terminated but not driven, preventing erroneous logic states during idle or fault conditions.

What ESD protection level is provided?

The transceiver interface pins can withstand ±15kV human body model (HBM) electrostatic discharge without damage or latchup.