DS3695ATMX/NOPB

Overview

The DS3695ATMX/NOPB is a multipoint RS485/RS422 transceiver manufactured by Texas Instruments. It operates on a single +5V supply with a recommended voltage range of 4.75V to 5.25V. The device supports a bus common mode range from -7V to +12V, allowing for significant ground differences between devices. Key electrical parameters include a typical driver propagation delay of 15 ns and a receiver hysteresis of 70 mV. The component provides TRI-STATE capability for both drivers and receivers, ensuring high impedance states during inactive periods.

Feature Summary

• Supports multipoint communication compliant with EIA standard RS485 and compatible with RS-422 requirements.
• Features thermal shutdown protection that forces driver outputs into a high-impedance state upon excessive power dissipation.
• Provides a dedicated open-collector output pin to report the occurrence of thermal shutdown events.

Applications

• Multipoint data transmission systems requiring extended common mode ranges.
• Industrial control networks utilizing RS485 or RS422 protocols.
• Bus repeater designs where fault reporting and isolation are required.

Procurement Notes

Verify the specific package variant against the datasheet, as the 'A' suffix in the model number typically denotes an industrial temperature range (-40°C to +85°C), whereas the provided documentation primarily details commercial (0°C to 70°C) specifications. Confirm RoHS compliance status and lifetime buy availability, as older TI interface components may have discontinued production statuses. Ensure the ordering suffix matches the exact temperature grade and packaging required for the design.

Selection Notes

Select this component when designing systems that require robust performance under large ground potential differences, specifically up to ±7V. The inclusion of a thermal shutdown status output makes it suitable for applications needing diagnostic feedback on bus faults. Consider the 32-unit load capability when planning network topology. Verify that the operating temperature range aligns with the specific suffix variant selected for the project environment.

Part Context

This device belongs to the DS3695 family of multipoint transceivers, which also includes variants like the DS3695T, DS3696, and DS3697. These components are designed for high-speed differential signaling on noisy industrial buses. The family shares core architectural features but differs in temperature ratings and specific pin configurations for thermal monitoring.

Replacement Considerations

Direct replacements within the same functional family include the DS3695T, DS3696, and DS3697. When substituting, verify that the alternative part meets the required operating temperature range and check if the thermal shutdown pin configuration is compatible with the existing circuit design.