SN74BCT8373ADW

Specialty Logic Overview

The SN74BCT8373ADW is an octal D-type latch scan test device from Texas Instruments, part of the SCOPE family. It supports IEEE Standard 1149.1-1990 boundary-scan architecture via a four-wire Test Access Port (TAP). The device operates within a supply voltage range of 4.5V to 5.5V and functions over a commercial temperature range of 0°C to 70°C. In normal mode, it is functionally equivalent to standard BCT373 latches.

Specialty Logic Feature Summary

• Integrates an eight-bit instruction register and three data registers for comprehensive boundary-scan testing capabilities.
• Supports parallel signature analysis and pseudo-random pattern generation through dedicated boundary-control logic.
• Maintains standard latch functionality during test operations without affecting normal circuit performance.

Specialty Logic Applications

• Boundary-scan testing of complex circuit board assemblies
• Self-test operations on integrated circuit I/O boundaries
• Parallel signature analysis for input data compression

Specialty Logic Procurement Notes

Verify that the specific ordering suffix corresponds to the plastic small-outline package variant. Confirm the component meets the required commercial temperature specifications for your application environment. Ensure compatibility with existing IEEE 1149.1 test infrastructure before integration.

Specialty Logic Selection Notes

Select this component when boundary-scan testability is required alongside standard octal latch functionality. It serves as a direct functional replacement for non-scan variants in designs needing enhanced diagnostic coverage. Verify power supply constraints align with the specified BiCMOS operating range.

Specialty Logic Part Context

This device belongs to the Texas Instruments SCOPE family of testability products. It utilizes merged bipolar-CMOS technology to provide low-power operation while maintaining TTL-compatible I/O levels. The family is designed to facilitate manufacturing tests for complex digital systems.

Specialty Logic Replacement Considerations

Functionally equivalent to the SN74F373 and SN74BCT373 in normal-operation mode. Verify pinout compatibility if substituting into existing layouts without scan-test requirements.