LTC2858IMS-2#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2858IMS-2#TRPBF is a low-power, full-duplex RS485/RS422 transceiver operating on a 5V supply. It supports a maximum data rate of 250kbps with slew-rate limiting for low EMI applications. The device features a one-eighth unit load receiver input resistance exceeding 96kΩ, supporting up to 256 nodes per bus. Enhanced ESD protection withstands ±15kV (HBM) without latchup. It includes current-limited drivers and thermal shutdown for fault protection. The part is housed in a 10-lead MSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited driver outputs reduce high-frequency EMI emissions
• High input impedance receiver supports extensive bus node counts
• Guaranteed failsafe operation ensures logic-high output during idle or fault conditions
• Power-up/down glitch-free driver outputs prevent signal corruption

Drivers, Receivers, Transceivers Applications

• Low EMI industrial communication networks
• Backplane transceiver systems
• Level translation interfaces
• Multi-drop RS485/RS422 bus segments

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube. Confirm the IMS designation matches the required 10-lead MSOP package type. Ensure the -2 suffix aligns with the 250kbps slew-rate limited specification. Cross-reference the manufacturer lot codes against current quality certifications.

Drivers, Receivers, Transceivers Selection Notes

Select this component when low electromagnetic interference is critical, as the slew-rate limiting restricts the data rate to 250kbps. Choose this full-duplex variant over half-duplex models if simultaneous bidirectional communication is required. Verify that the 5V supply voltage range meets the system power architecture requirements before integration.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC285x family of low-power RS485/RS422 transceivers. It shares architectural similarities with the LTC2856 and LTC2857 series but offers distinct duplexing and speed configurations. The family emphasizes robust fault protection and high node capacity within compact surface-mount packages.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2858IMS-2#PBF

Drivers, Receivers, Transceivers FAQ

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

The LTC2858-2 variant is limited to a maximum data rate of 250kbps due to its slew-rate limited driver design.

How does the receiver input impedance affect bus loading?

The receiver input resistance exceeds 96kΩ, representing a one-eighth unit load, which allows up to 256 nodes to be connected to a single bus segment.

What happens to the driver outputs when the supply is removed?

The driver maintains a high output impedance over the entire common mode range when disabled or when the supply is removed, preventing bus contention.