LTC1483IS8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1483IS8#PBF is an ultra-low power differential line transceiver designed for RS485 applications with extended common-mode range from –7V to 12V, meeting RS422 requirements. It operates on a single 5V supply (4.75V to 5.25V) and features controlled slew rate drivers to reduce EMI. Key electrical parameters include a maximum data rate of 250 kbits/s, quiescent current of 120mA max with driver disabled, and less than 1mA in shutdown mode. The device provides ±10kV ESD protection, thermal shutdown circuitry, and fail-safe receiver outputs.

Drivers, Receivers, Transceivers Feature Summary

• Ultra-low power CMOS design significantly reduces energy consumption compared to bipolar counterparts while maintaining ruggedness against overload and ESD damage.
• Controlled slew rate driver decreases electromagnetic interference radiated from RS485 lines and improves signal fidelity with unterminated lines.
• Thermal shutdown circuit prevents excessive power dissipation caused by bus contention or faults by forcing driver outputs into a high impedance state.
• Fail-safe receiver guarantees a high output state when inputs are left open, ensuring reliable communication during idle or fault conditions.

Drivers, Receivers, Transceivers Applications

• Battery-powered RS485/RS422 applications requiring low power consumption
• Systems sensitive to electromagnetic radiation utilizing the low EMI driver
• Level translator circuits in industrial communication networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the IS8 designation corresponds to the 8-lead SOIC package and extended industrial temperature range (-40°C to 85°C). Ensure ordering documentation matches the manufacturer's part number format exactly to avoid substitution errors.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring RS485/RS422 compatibility with strict power constraints. The 250 kbits/s maximum data rate suits moderate-speed industrial buses. Consider the 8-pin SOIC package for surface mount assembly. Verify that the system ground differences do not exceed the specified -7V to 12V common-mode range limits.

Drivers, Receivers, Transceivers Part Context

The LTC1483 belongs to Analog Devices' family of low-power RS485 transceivers. It serves as a pin-compatible alternative to the LTC485, offering enhanced power efficiency through CMOS technology. This series addresses the need for robust communication interfaces in battery-operated and EMI-sensitive environments without compromising signal integrity.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC485 is a pin-compatible alternative within the same product family. Other related parts include the LTC1480, LTC1481, LTC1485, and LTC1487, which offer variations in speed, power, and input impedance characteristics.