LTC486CN#PBF

Drivers, Receivers, Transceivers Overview

The LTC486CN#PBF is a low-power quad differential bus driver designed for multipoint data transmission in RS-485 and RS-422 applications. It features an extended common-mode range from -7V to +12V, allowing up to ±7V ground difference between devices on the bus. The device operates on a single 5V supply with typical supply current of 110µA. It includes thermal shutdown protection that forces outputs to high impedance at 150°C. Key electrical parameters include a propagation delay of 30ns typical, skew of 15ns typical, and rise/fall times of 15ns typical. It supports data rates up to 10Mb/s.

Drivers, Receivers, Transceivers Feature Summary

• CMOS design provides significant power savings while maintaining ruggedness against overload and ESD damage.
• Thermal shutdown circuit prevents excessive power dissipation by forcing outputs into a high impedance state.
• Power-up/down glitch-free driver outputs permit live insertion or removal of packages without data corruption.

Drivers, Receivers, Transceivers Applications

• Low power RS-485/RS-422 drivers
• Level translator

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix CN indicates the commercial temperature range (0°C to 70°C) and PDIP-16 package. Confirm RoHS compliance status via official documentation. Ensure ordering matches the exact part number including the #PBF designation for lead-free finish. Cross-reference pinout compatibility if replacing legacy components like SN75172.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring low quiescent current and extended common-mode voltage tolerance. Verify that the required operating temperature falls within the commercial range; otherwise, consider the industrial grade variant. Ensure the system design accommodates the 5V supply voltage constraints and utilizes proper cable termination to prevent signal reflections.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC486 series of low-power RS-485 drivers manufactured by Analog Devices. It is pin-compatible with several industry-standard drivers, facilitating direct replacement in existing designs. The series focuses on reducing power consumption in multipoint communication networks while maintaining robust fault protection capabilities.

Drivers, Receivers, Transceivers Replacement Considerations

Pin-compatible replacements include SN75172, DS96172, µA96172, and DS96F172. Verify that substitute parts meet the same electrical specifications regarding supply current, propagation delay, and common-mode range before implementation.

Drivers, Receivers, Transceivers FAQ

What is the function of the thermal shutdown feature?

The thermal shutdown circuit protects the device from excessive power dissipation. If internal temperature reaches 150°C, it forces the driver outputs into a high impedance state. The outputs re-enable when the temperature cools to 130°C.

How does the device handle live insertion?

The LTC486CN#PBF features power-up/down glitch-free driver outputs. This ensures that the outputs remain in a high impedance state during power transitions, permitting the live insertion or removal of the package without causing data errors on the bus.

What is the common-mode range specification?

The device supports an extended common-mode range from -7V to +12V. This specification permits a maximum of ±7V ground difference between devices connected on the same bus.