74ACTQ573SJ

Latches Overview

The onsemi 74ACTQ573SJ is an octal D-type latch featuring three-state outputs, manufactured using FACT Quiet Series technology. It operates within a supply voltage range of 4.5V to 5.5V and supports a maximum quiescent supply current of 40µA at 5.5V. The device provides high drive capability with outputs sourcing or sinking up to 24mA. Propagation delays are guaranteed between 2.0ns and 9.0ns at 5.0V. It utilizes a 20-lead Small Outline Package (SOP) with EIAJ TYPE II dimensions.

Latches Feature Summary

• Utilizes FACT Quiet Series technology for improved dynamic threshold performance and reduced simultaneous switching noise.
• Features buffered common Latch Enable and Output Enable inputs for efficient control.
• Inputs and outputs are positioned on opposite sides of the package to facilitate microprocessor interfacing.
• Includes GTO output control and undershoot correction mechanisms.

Latches Applications

• High-speed data latching in digital systems
• Microprocessor interface circuits
• Bus-oriented memory register applications

Latches Procurement Notes

Verify the specific ordering code against manufacturer documentation to ensure correct package type and suffix requirements. Confirm that the component meets all absolute maximum ratings regarding supply voltage and input/output currents during system integration. Ensure compliance with operating temperature ranges specified in the datasheet for reliable performance.

Latches Selection Notes

Select this component when designing systems requiring octal latching with three-state bus capabilities. The ACTQ series is suitable for 5V logic environments where low power consumption and high noise immunity are critical. Consider the SOP package constraints for PCB layout and thermal management relative to other available package options like SOIC or TSSOP.

Latches Part Context

This device belongs to the 74ACQ/ACTQ family of octal latches. It shares functional similarities with the ACQ/ACTQ373 but differs in pinout configuration, placing inputs and outputs on opposite sides. The Quiet Series designation indicates enhanced noise performance characteristics compared to standard logic families.

Latches Replacement Considerations

Direct substitutes include the 74ACTQ573SC (SOIC package) and 74ACTQ573MTC (TSSOP package). Verify pin compatibility and electrical specifications before substitution. Other manufacturers' equivalent parts may require verification of logic levels and drive strengths.

Latches FAQ

What is the function of the OE input?

The Output Enable (OE) input controls the three-state buffers. When OE is LOW, the buffers are enabled; when HIGH, they enter a high impedance mode.

How does the LE input affect data storage?

When Latch Enable (LE) is HIGH, the latches are transparent. When LE transitions from HIGH to LOW, the data present at the D inputs is stored in the latches.