LTC1485CS8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1485CS8#PBF is a low-power differential bus transceiver designed for multipoint data transmission in RS-485 applications, meeting RS-422 requirements. It features an extended common-mode range from -7V to +12V, allowing up to ±7V ground difference between devices. The device operates on a single 5V supply (4.75V to 5.25V) with a typical supply current of 1.8mA. It includes thermal shutdown protection and I/O pins protected against ESD strikes exceeding ±10kV. The receiver guarantees a high output state when inputs are left open.

Drivers, Receivers, Transceivers Feature Summary

• CMOS design with Schottky clamping provides power savings while maintaining ruggedness against overload and ESD damage.
• Driver and receiver outputs feature three-state capability, maintaining high impedance during shutdown or power-off conditions.
• Thermal shutdown circuit prevents excessive power dissipation by forcing driver outputs into a high impedance state upon overheating.
• Fail-safe receiver feature ensures a known high logic state when the bus lines are disconnected or floating.

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission systems utilizing RS-485 standards
• RS-422 communication networks requiring extended common-mode voltage tolerance
• Level translation interfaces between different logic families

Drivers, Receivers, Transceivers Procurement Notes

Verify the component marking '1485' on the S8 package to confirm authenticity. Ensure the ordering suffix matches #PBF for lead-free finish. Confirm the temperature grade corresponds to the CS8 variant for commercial operation ranges. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring pin compatibility with SN75176A, DS75176A, and SN75LBC176. Choose the CS8 package for surface-mount assembly within the 0°C to 70°C operating range. Consider the IS8 variant if industrial temperature specifications (-40°C to 85°C) are required for the application environment.

Drivers, Receivers, Transceivers Part Context

This device belongs to the LTC1485 series of low-power RS-485/RS-422 transceivers manufactured by Analog Devices. It serves as a direct replacement for legacy bipolar transceivers, offering reduced power consumption without compromising signal integrity or noise immunity in standard industrial communication buses.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC1485CS8#PBF is pin-compatible with the SN75176A, DS75176A, and SN75LBC176. Verify that substitute components maintain the same 5V supply requirement and thermal shutdown characteristics to ensure functional equivalence in existing designs.