74ACT323PC

Overview

The Fairchild Semiconductor 74ACT323PC is an 8-bit universal shift and storage register featuring three-state outputs. Designed for through-hole mounting in a 20-DIP package, it operates within a supply voltage range of 4.5V to 5.5V. The device supports bidirectional data shifting with synchronous reset functionality and common I/O pins. It exhibits a maximum propagation delay of 9ns at 5V with 50pF load conditions. Operating temperatures span from -40°C to 85°C, ensuring reliability across industrial environments.

Feature Summary

• Provides 8-bit universal shift and storage capabilities with bidirectional data movement
• Features three-state outputs for efficient bus line driving and system integration
• Incorporates synchronous reset and multiplexed parallel load inputs for flexible control

Applications

• Bidirectional data transmission systems requiring shift register functionality
• Digital signal processing circuits utilizing parallel-to-serial or serial-to-parallel conversion
• Memory interface modules employing storage registers with tri-state output buffering

Procurement Notes

Verify the specific manufacturer source, as this component may be distributed by ON Semiconductor following corporate restructuring. Confirm RoHS compliance status and check for obsolete part status indicators. Ensure the 20-DIP package dimensions match your PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this component when an 8-bit shift register with tri-state outputs is required for high-speed digital applications. The ACT series offers faster switching speeds compared to standard TTL logic. Consider the 20-DIP package constraint for through-hole assembly processes and verify voltage compatibility with 5V logic systems.

Part Context

This part belongs to the 74ACT logic family, which combines CMOS low power consumption with TTL-compatible speed and input levels. The 74ACT323 specifically addresses applications needing versatile data handling in a robust industrial-grade package. It serves as a critical interface element between microprocessors and peripheral devices in complex digital architectures.

Replacement Considerations

Check for equivalents from ON Semiconductor, which acquired Fairchild's semiconductor business. Verify pinout compatibility and electrical specifications against alternative 8-bit shift registers with tri-state outputs from other manufacturers.