74AC573PC

Overview

The Fairchild Semiconductor 74AC573PC is an octal transparent latch featuring buffered common Latch Enable (LE) and Output Enable (OE) inputs. It operates within a supply voltage range of 2V to 6V, with outputs capable of sourcing and sinking 24mA. The device provides three-state outputs for bus interfacing and exhibits reduced ICC and IOZ currents. It is functionally identical to the 74AC373 but features inputs and outputs on opposite sides of the package.

Feature Summary

• Inputs and outputs positioned on opposite sides of the package to facilitate easy interface with microprocessors
• Three-state outputs designed for efficient bus interfacing applications
• Outputs provide high drive capability by sourcing and sinking 24mA

Applications

• Input or output port expansion for microprocessor systems
• Bus interfacing in digital logic circuits
• Octal data latching in memory address decoding

Procurement Notes

Verify the specific suffix 'PC' against the manufacturer's current datasheet to confirm the package type and RoHS compliance status. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target design, as suffixes can indicate variations in packaging or material composition.

Selection Notes

Select this component when a bidirectional octal latch with opposite-side I/O is required for microprocessor interfacing. It serves as a direct functional alternative to the 74AC373 and 74ACT573, offering similar electrical characteristics with a distinct physical layout advantage for PCB routing.

Part Context

This component belongs to the 74AC series of high-speed CMOS logic devices. It is part of the standard octal latch family, sharing functionality with the 74AC373 but distinguished by its pin arrangement. The AC series offers performance improvements over older LS and HC technologies while maintaining compatibility with standard logic families.

Replacement Considerations

The 74AC373 and 74ACT573 are functionally identical alternatives. Verify that the substitute component accommodates the same voltage range and drive requirements.