SN74ABT8543DWR

Specialty Logic Overview

The SN74ABT8543DWR is an octal registered bus transceiver from Texas Instruments, designed for high-speed data transfer in 5V systems. It operates within a supply voltage range of 4.5 V to 5.5 V and features three-state outputs. The device integrates scan test capabilities for enhanced manufacturing testing efficiency. It utilizes the ABT logic series to achieve low propagation delay while maintaining high drive strength. Packaged in a 28-pin SOIC format, it supports surface-mount assembly for compact circuit board designs.

Specialty Logic Feature Summary

• Integrates scan test capabilities to facilitate efficient manufacturing testing procedures
• Provides bidirectional data transfer between external buses and internal registers
• Features three-state outputs to prevent signal contention on shared data lines

Specialty Logic Applications

• High-speed data acquisition systems requiring registered buffering
• Industrial control networks utilizing parallel bus architectures
• Test equipment interfaces needing scan chain integration

Specialty Logic Procurement Notes

Verify the specific package variant and tape-and-reel specifications against the official datasheet before procurement. Confirm that the ordering suffix matches the required packaging quantity and reel diameter. Ensure compatibility with existing PCB footprint dimensions and soldering profiles. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components.

Specialty Logic Selection Notes

Select this component when both registered storage and bidirectional bus driving are required in a single package. The ABT technology offers a balance between speed and power consumption suitable for 5V applications. Consider the 28-pin SOIC package constraints regarding available board space. Evaluate the need for scan test features if production testing throughput is a critical factor.

Specialty Logic Part Context

This device belongs to the Texas Instruments 74ABT family of high-speed BiCMOS logic devices. The 74ABT series is known for performance comparable to 74F logic but with CMOS-level power consumption. Registered bus transceivers in this family typically include latching functionality to hold data states during bus transitions.

Specialty Logic Replacement Considerations

Direct replacements may include other 8-bit registered bus transceivers with scan test support from the same manufacturer. Verify pinout compatibility and electrical characteristics such as output current and propagation delay. Alternative packages like TSSOP may require adapter solutions or redesign.