LTC2858IDD-1#PBF

Drivers, Receivers, Transceivers Overview

The LTC2858IDD-1#PBF is a low power, full-duplex RS485/RS422 transceiver operating on a 5V supply with a maximum data rate of 20Mbps. It features enhanced ESD protection capable of withstanding ±15kV (HBM) without latchup. The receiver input resistance exceeds 96kΩ, representing a one-eighth unit load to support up to 256 nodes. Key electrical parameters include a supply voltage range of 4.5V to 5.5V, a maximum receive mode current of 900µA, and a shutdown current of 5µA. The device operates within an industrial temperature range of –40°C to 85°C and is housed in a 10-lead 3mm × 3mm DFN package.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex operation with independent driver and receiver control
• High input impedance supporting up to 256 nodes per bus
• Robust ±15kV HBM ESD protection on interface pins
• Integrated thermal shutdown and current limiting for fault protection

Drivers, Receivers, Transceivers Applications

• Industrial communication networks requiring high node density
• Backplane transceiver interfaces
• Level translation between different logic voltage domains
• Low EMI serial communication systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements and signal integrity standards before integration. Cross-reference part markings with datasheet specifications to authenticate components.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring full-duplex communication at speeds up to 20Mbps. The one-eighth unit load receiver allows for extensive bus topologies. Consider the 10-lead DFN package for space-constrained designs. Verify that the 5V supply rail aligns with the system architecture and that ESD protection levels meet environmental safety requirements.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC285x family of low-power RS485/RS422 transceivers. The -1 suffix indicates a maximum data rate of 20Mbps, distinguishing it from the -2 variant limited to 250kbps. The 'I' designation specifies the industrial temperature range, while 'DD' denotes the 10-lead DFN package format used for the full-duplex configuration.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2858ID#PBF

Drivers, Receivers, Transceivers FAQ

What is the receiver input impedance of the LTC2858?

The receiver input resistance is guaranteed to be greater than 96kΩ, which constitutes a one-eighth unit load.

How does the device handle bus contention or faults?

The driver outputs are current-limited to prevent excessive power dissipation, and thermal shutdown protection disables outputs if junction temperatures exceed safe limits.

Does the receiver require external pull-up resistors?

No, the receiver output is internally driven high or low, eliminating the need for external pull-up resistors.