LTC489ISW#PBF

Drivers, Receivers, Transceivers Overview

The LTC489ISW#PBF is a low-power quad RS-485 line receiver manufactured by Analog Devices Inc. It operates on a single 5V supply with a typical supply current of 7mA. The device supports the RS-485 and RS-422 standards, featuring an extended common mode range from -7V to +12V. It provides four differential receivers with three-state outputs and independent enable controls for pairs (EN12 and EN34). Key electrical parameters include a typical propagation delay of 28ns, input hysteresis of 60mV, and operation within a temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Low power CMOS design significantly reduces consumption compared to bipolar counterparts while maintaining ruggedness against overload and ESD damage.
• Fail-safe feature guarantees a high output state when inputs are left open, ensuring a known logic state during idle transmission periods.
• Extended common mode range permits up to ±7V ground difference between devices on the bus, supporting multipoint data transmission.
• Independent enable pins allow flexible control over receiver pairs, maintaining high impedance in three-state or power-off conditions.

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission systems compliant with RS-485 standards
• RS-422 communication networks requiring differential line reception
• Level translation interfaces in industrial bus applications

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix ISW indicates the industrial temperature grade (-40°C to +85°C) and SOIC-16 package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the ordering part number matches the required pinout and lead finish specifications for the target PCB layout.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring multiple differential receivers on a single chip without integrated drivers. Consider the 60mV input hysteresis for noise immunity in noisy environments. Verify that the system voltage remains within the 4.75V to 5.25V range to guarantee AC and DC specifications are met across the full operating temperature range.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC488/LTC489 family of low-power differential bus receivers. The LTC489 variant specifically offers four receivers with dual enable pins, distinguishing it from the LTC488 which has a single enable pin for all receivers. Both share identical pinouts and electrical characteristics except for the enable control structure.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet notes pin compatibility with the SN75175. Verify functional equivalence regarding enable logic and electrical limits before substitution. No other direct substitute part numbers are explicitly confirmed in the provided source material.