74ACTQ573QSCX

Latches Overview

The MC74ACTQ573 is an octal D-type latch with 3-STATE outputs manufactured by onsemi. It operates within a supply voltage range of 4.5V to 5.5V and supports data inputs (D0–D7) and buffered common Latch Enable (LE) and Output Enable (OE) inputs. The device utilizes FACT Quiet Series technology for improved dynamic threshold performance and simultaneous switching noise control. It features outputs capable of sourcing or sinking 24 mA. The component is housed in a 20-Lead Quarter Size Outline Package (QSOP), designated as package MQA20, and functions identically to the ACQ/ACTQ373 but with inputs and outputs positioned on opposite sides of the package.

Latches Feature Summary

• Utilizes FACT Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance.
• Features GTO output control and undershoot corrector alongside a split ground bus for superior signal integrity.
• Inputs and outputs are located on opposite sides of the package to facilitate easy interface with microprocessors.
• Provides guaranteed pin-to-pin skew AC performance and enhanced latch-up immunity.

Latches Applications

• Octal data latching in high-speed digital systems
• Microprocessor interface circuits requiring transparent latch functionality
• Bus holding applications with 3-STATE output buffering

Latches Procurement Notes

Verify that the ordering code includes the 'X' suffix if tape and reel packaging is required, as standard units may come in tubes. Confirm the specific package variant matches the design requirements, as the 74ACTQ573 series is available in multiple form factors including SOIC, SOP, TSSOP, PDIP, and QSOP. Ensure compatibility with the 4.5V to 5.5V operating voltage range during system integration.

Latches Selection Notes

Select this component when a high-speed octal latch with 3-STATE outputs is needed for 5V logic systems. The ACTQ variant is specifically designed for 4.5V to 5.5V operation, distinguishing it from the ACQ version which supports lower voltages. Consider the QSOP package for space-constrained designs, while noting that other packages like SOIC or TSSOP are available if different footprint constraints apply.

Latches Part Context

This part belongs to the 74ACQ/ACTQ family of Quiet Series logic devices. These components are engineered to reduce ICC and IOZ by 50% compared to standard equivalents. The family emphasizes low noise characteristics through specific internal circuitry designed to manage simultaneous switching noise levels effectively.

Latches Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.