LTC490IS8#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC490IS8#TRPBF is a low-power differential bus transceiver designed for multipoint data transmission in RS-485 and RS-422 applications. It operates on a single 5V supply with a typical supply current of 300mA. The device features an extended common mode range from –7V to 12V, allowing up to a –7V ground difference between devices. It includes thermal shutdown protection and glitch-free driver outputs for live insertion. The receiver incorporates a fail-safe feature ensuring a high output state when inputs are open. Electrical specifications are guaranteed over the industrial temperature range of –40°C to 85°C.

Drivers, Receivers, Transceivers Feature Summary

• Low power CMOS design suitable for RS-485 and RS-422 multipoint networks
• Extended common mode range supporting –7V to 12V bus voltages
• Thermal shutdown circuitry prevents damage from excessive power dissipation
• Glitch-free driver outputs enable safe live insertion and removal

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission systems using twisted-pair cables
• Industrial communication networks requiring extended common mode voltage tolerance
• Line repeater configurations for long-distance signal transmission

Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to tape and reel packaging containing lead-free components compliant with RoHS standards. Confirm the 'I' designation indicates the industrial temperature range of –40°C to 85°C. Ensure the package type matches the required S8 (SOIC) footprint for surface mount assembly.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a low-power, pin-compatible alternative to the SN75179 is required for RS-485 applications. It is appropriate for designs needing an extended common mode range beyond standard limits. Consider the thermal shutdown feature for environments prone to bus contention or short circuits.

Drivers, Receivers, Transceivers Part Context

The LTC490 is part of Analog Devices' family of low-power differential transceivers. It serves as a robust solution for industrial communication where power efficiency and fault protection are critical. The device complements other interface solutions like the LTC491 by offering full-duplex capabilities without a dedicated enable pin.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet explicitly states the device is pin compatible with the SN75179. For higher speed requirements, consider the LTC1686 or LTC1689 which maintain pin compatibility while offering 52Mbps operation.