LTC2858CDD-2#PBF

Drivers, Receivers, Transceivers Overview

The LTC2858CDD-2#PBF is a low power, full-duplex RS485/RS422 transceiver manufactured by Analog Devices Inc. It operates on a single 5V supply and supports a maximum data rate of 250kbps with slew rate limiting to minimize electromagnetic interference (EMI). The device features a one-eighth unit load receiver input resistance exceeding 96kΩ, enabling support for up to 256 nodes per bus in the C and I grades. It includes enhanced ESD protection rated at ±15kV (human body model) on interface pins without latchup or damage. The component is housed in a 10-lead 3mm × 3mm DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Slew rate limited driver outputs reduce high frequency EMI emissions and mitigate transmission line termination issues.
• Guaranteed failsafe receiver operation ensures a logic-high output state when inputs are floating, shorted, or unpowered.
• High input impedance allows connection of up to 256 nodes on a single bus without excessive loading.
• Current limited drivers and thermal shutdown protect against excessive power dissipation during bus contention.

Drivers, Receivers, Transceivers Applications

• Low EMI RS485/RS422 communication networks
• Industrial automation systems requiring high node density
• Backplane transceivers with strict EMI constraints

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the DD package designation corresponds to the 10-lead DFN form factor. Ensure the -2 suffix matches the required 250kbps slew-rate-limited specification rather than the higher speed variant.

Drivers, Receivers, Transceivers Selection Notes

Select this part for applications prioritizing EMI reduction over high-speed throughput. Verify that the 250kbps maximum data rate meets system timing requirements. Check temperature grade availability if operating outside the commercial range. Ensure the full-duplex architecture with separate transmit/receive lines fits the circuit topology.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC285x family of low power transceivers. It shares architectural similarities with the LTC2856 and LTC2857 series but is distinct as a full-duplex device with independent driver and receiver controls. The -2 suffix specifically denotes the slew-rate-limited version designed for EMI-sensitive environments.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.