74ACQ373SCX

Latches Overview

The onsemi 74ACQ373SCX is an octal transparent latch with 3-STATE outputs, manufactured using Fairchild Quiet Series technology. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device features eight D-type latches in a single package, housed in a 20-Lead Small Outline Integrated Circuit (SOIC) package. Key electrical characteristics include propagation delays as low as 1.5ns at 5.0V, output drive capabilities of ±24mA, and maximum quiescent supply current of 40µA.

Latches Feature Summary

• Utilizes Quiet Series technology for guaranteed simultaneous switching noise levels and improved dynamic threshold performance.
• Features GTO output control and undershoot corrector for superior signal integrity.
• Provides split ground bus architecture to enhance overall circuit performance.
• Offers improved latch-up immunity compared to standard AC/ACT counterparts.

Latches Applications

• Bus organized system applications
• Buffering memory address registers
• Driving bus lines requiring 3-STATE control

Latches Procurement Notes

Verify the specific ordering code suffix 'X' confirms tape and reel packaging availability. Confirm the manufacturer origin, as this component was originally produced by Fairchild Semiconductor before acquisition by onsemi. Ensure the datasheet revision matches the required design specifications for timing and electrical characteristics.

Latches Selection Notes

Select this component when low simultaneous switching noise and high-speed performance are critical. The Quiet Series technology ensures better dynamic threshold performance than standard AC logic. Verify that the 20-lead SOIC package fits the board layout constraints and that the 2.0V to 6.0V supply range aligns with the system power rails.

Latches Part Context

This part belongs to the 74ACQ373 family of octal transparent latches. It is functionally similar to the 74AC373 but incorporates enhanced noise reduction features. The 'SC' designation indicates the 20-lead SOIC package, while the 'X' suffix specifies tape and reel packaging for automated assembly processes.

Latches Replacement Considerations

Direct pin-to-pin replacements may include the standard 74AC373 or 74ACT373, though these lack the specific Quiet Series noise reduction features. Verify compatibility if substituting with other manufacturers' AC-series latches, ensuring voltage ranges and drive currents match the application requirements.