SN74ABT8543DL

Specialty Logic Overview

The SN74ABT8543DL is a specialty function logic device manufactured by Texas Instruments, classified as an octal register bus transceiver with scan test capabilities. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible input and output levels. The component utilizes BiCMOS technology and provides tri-state outputs for effective bus management. It is housed in a 28-pin SSOP package and supports surface-mount installation. The device functions as a non-inverting bus interface with integrated scanning features for testing purposes.

Specialty Logic Feature Summary

• Integrates octal register bus transceiver functionality with dedicated scan test device architecture
• Provides tri-state outputs compatible with standard bus systems for controlled data transfer
• Supports TTL-level signal interfacing for direct compatibility with digital logic circuits

Specialty Logic Applications

• Scan test infrastructure for digital circuit verification
• Octal bus interface systems requiring registered data holding
• Specialty logic applications involving bus transceivers with test access

Specialty Logic Procurement Notes

Verify the specific package variant and manufacturer status before procurement. This component is listed as scheduled for obsolescence and will be discontinued by the manufacturer. Confirm availability through authorized distributors and ensure the ordering suffix matches the required pin configuration. Check for end-of-life notices to plan for long-term supply continuity.

Specialty Logic Selection Notes

Select this component when an octal bus transceiver with integrated scan test features is required. It is suitable for designs needing registered data paths with high drive capability. Ensure the system operates within the specified 4.5 V to 5.5 V voltage range. Consider the 28-pin SSOP package constraints for PCB layout and thermal management requirements.

Specialty Logic Part Context

This part belongs to the Texas Instruments 74ABT series of advanced bipolar CMOS logic devices. It combines the speed of bipolar technology with the low power consumption of CMOS. The SN74ABT8543DL specifically addresses niche applications requiring both bus transmission and scan chain integration, distinguishing it from standard bus transceivers or latches in the same family.

Specialty Logic Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the scheduled obsolescence status, alternative components should be evaluated based on functional equivalence and package compatibility.