74ACTQ373SC

Latches Overview

The onsemi 74ACTQ373SC is an octal transparent latch with 3-STATE outputs, utilizing Quiet Series technology for superior dynamic threshold performance and guaranteed simultaneous switching noise levels. It operates within a supply voltage range of 4.5V to 5.5V. The device features eight D-type latches in a single package, providing faster propagation delays than standard AC/ACT373 variants. Outputs source and sink 24 mA, ensuring robust drive capabilities for bus lines or memory address registers.

Latches Feature Summary

• Utilizes Fairchild 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 electrical performance.
• Provides guaranteed pin-to-pin skew AC performance and enhanced latch-up immunity.
• Offers 3-STATE outputs capable of driving bus lines or buffering memory address registers.

Latches Applications

• Bus organized system applications
• Driving bus lines
• Buffering memory address registers

Latches Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm the package type. The 'SC' suffix corresponds to the 20-Lead Small Outline Integrated Circuit (SOIC) JEDEC MS-013, 0.300 inch wide body package. Ensure compatibility with the required operating temperature range of -40°C to +85°C and the specified 4.5V to 5.5V supply voltage constraints during component sourcing.

Latches Selection Notes

Select this component when designing systems requiring octal latching with high-speed performance and low noise characteristics. The 74ACTQ373SC is suitable for applications demanding guaranteed simultaneous switching noise levels and improved latch-up immunity compared to standard logic families. Consider the 20-SOIC package dimensions and the 24 mA output drive capability when evaluating board layout and load requirements.

Latches Part Context

This device belongs to the 74ACQ/ACTQ series of octal transparent latches. It is part of the Quiet Series family, which incorporates advanced noise reduction technologies. The 74ACTQ373SC specifically targets high-performance digital systems where signal integrity and precise timing are critical, offering enhanced specifications over traditional AC/ACT logic devices.

Latches Replacement Considerations

Direct substitutes include other 74ACTQ373 variants from different manufacturers that maintain pin compatibility and electrical specifications. Verify that any replacement supports the same 20-SOIC package and meets the 4.5V to 5.5V operating voltage range. Ensure the alternative device also provides 3-STATE outputs and comparable propagation delay characteristics.

Latches FAQ

What technology does the 74ACTQ373SC use to reduce noise?

It utilizes Fairchild Quiet Series technology, which includes GTO output control and an undershoot corrector to guarantee quiet output switching and improve dynamic threshold performance.

How are the outputs controlled in the 74ACTQ373SC?

The outputs are controlled by the Latch Enable (LE) and Output Enable (OE) inputs. Data enters the latches when LE is HIGH, and appears on the bus when OE is LOW. When OE is HIGH, the outputs enter a high impedance state.

What is the recommended supply voltage range for the ACTQ variant?

The recommended operating supply voltage (VCC) for the 74ACTQ373SC is between 4.5V and 5.5V.