LTC1485CN8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1485CN8#PBF is a low-power differential bus transceiver designed for multipoint data transmission in RS-485 applications. It features an extended common-mode range from -7V to +12V, supporting 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 incorporates a fail-safe feature ensuring a high output state when inputs are open.

Drivers, Receivers, Transceivers Feature Summary

• CMOS Schottky design provides significant power savings while maintaining ruggedness against overload and ESD damage.
• Driver and receiver outputs are three-state, 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.
• Receiver fail-safe guarantees a high output state when inputs are left open.

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission systems using RS-485 standards
• RS-422 compliant communication networks
• Level translation interfaces requiring extended common-mode voltage tolerance

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and RoHS compliance as per manufacturer documentation. Confirm the N8 package designation corresponds to the 8-lead plastic DIP format required for the target PCB layout. Ensure the 'C' grade temperature rating aligns with the operational environment specifications before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for half-duplex RS-485 applications requiring low power consumption and robust fault protection. The extended common-mode range makes it suitable for environments with significant ground potential differences. Verify that the 0°C to 70°C operating temperature range meets system requirements, as industrial grades offer wider ranges.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1485 series of low-power RS-485/RS-422 transceivers manufactured by Analog Devices. It is pin-compatible with legacy parts such as the SN75176A and DS75176A, facilitating direct upgrades in existing designs. The CN8 variant specifically denotes the commercial temperature range and through-hole packaging option within the product family.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet explicitly lists pin-compatible alternatives including the SN75176A, DS75176A, and SN75LBC176. These components share similar pinouts but may differ in electrical characteristics or temperature ratings. Verify compatibility with specific application constraints before substitution.