DS9637ACMX/NOPB

Overview

The DS9637ACMX/NOPB is a dual differential line receiver manufactured by Texas Instruments, designed to meet EIA RS-422 and RS-423 standards. It operates on a single 5V supply with an input common mode voltage range of ±7V. The device features Schottky technology for high-speed performance, providing TTL-compatible outputs. Key electrical parameters include a propagation delay of 25 ns maximum, an input current of 3.25 mA typical, and a supply current of 50 mA maximum. It supports data rates up to 10 Mb/s and includes built-in hysteresis for noise immunity.

Feature Summary

• Dual-channel architecture supporting RS-422 and RS-423 standards
• Schottky technology enabling high-speed signal processing
• TTL-compatible outputs for direct logic interfacing
• Extended input common mode voltage range of ±7V

Applications

• Digital data systems using differential transmission lines
• RS-422 simplex bus transmission networks
• Industrial communication interfaces requiring high noise immunity
• Military data systems compliant with MIL-STD-188-114

Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance against the manufacturer's latest documentation. Confirm the package type matches the required PCB footprint, as this model corresponds to the SOIC-8 variant. Ensure the operating temperature range aligns with the 'C' grade specifications (0°C to +70°C) rather than the industrial or military grades.

Selection Notes

Select this component when designing circuits that require robust differential reception under noisy conditions. The ±7V common mode range allows operation in environments with significant ground potential differences. Verify that the load resistance meets the minimum requirement for proper signal termination in RS-422 configurations.

Part Context

This part belongs to the DS9637A family of dual differential receivers from Texas Instruments. It serves as a standard interface solution for serial communication protocols defined by EIA standards. The device is widely used in legacy and modern industrial control systems where reliable long-distance data transmission is critical.

Replacement Considerations

Direct replacements within the same family include the DS9637AM for extended temperature ranges. Cross-brand equivalents should be verified for pin compatibility and electrical parameter alignment, particularly regarding input threshold voltages and output drive capabilities.