SN74ABT8543DWRG4

Specialty Logic Overview

The SN74ABT8543DWRG4 is a specialty logic integrated circuit manufactured by Texas Instruments, classified as an ABT series scan test device. It functions as an octal registered bus transceiver with true output characteristics. The component is housed in a 28-pin Plastic Dual In-line Small Outline (PDSO28) package, specifically identified as SOIC-28. Designed for industrial reliability, it operates within a voltage range of 4.5 V to 5.5 V and supports temperatures from -40°C to +85°C. The device integrates boundary scan capabilities with registered data transfer functionality.

Specialty Logic Feature Summary

• Integrates octal registered bus transceiver functionality with boundary scan test capabilities
• Features true output polarity for direct signal interfacing
• Utilizes ABT BiCMOS technology for high-speed performance
• Housed in a standard 28-pin SOIC surface-mount package

Specialty Logic Applications

• Boundary scan testing infrastructure
• High-speed data bus registration
• Industrial control system interfaces
• Automotive electronics modules

Specialty Logic Procurement Notes

Verify the specific suffix 'G4' indicates compliance with RoHS directives and lead-free manufacturing standards as per Texas Instruments documentation. Confirm the SOIC-28 package variant matches the required PCB footprint. Ensure the operating temperature range aligns with the target environment specifications before finalizing procurement orders.

Specialty Logic Selection Notes

Select this component when both registered bus transceiving and IEEE 1149.1 boundary scan testing are required in a single package. The ABT series offers superior speed compared to standard CMOS logic. Consider the 28-pin form factor for space-constrained designs requiring octal width. Validate power supply stability within the 4.5V to 5.5V window for optimal switching performance.

Specialty Logic Part Context

This part belongs to the Texas Instruments SN74ABT family, which utilizes advanced BiCMOS technology to achieve high-speed operation while maintaining low power consumption. The 8543 variant specifically combines registered transceiver functions with scan test features, distinguishing it from standard non-scan bus transceivers like the SN74ABT543.

Specialty Logic Replacement Considerations

The SN74ABT8543DL serves as a tube-packaged alternative to the reel-based DWR version. Verify pin compatibility and electrical specifications before substitution. Other variants may lack the integrated boundary scan test functionality present in this specific model.