MC74AC373DW

Latches Overview

The MC74AC373DW is an octal transparent latch with 3-state outputs manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40°C to +85°C. The device features propagation delays of up to 13.5 ns at 3.3 V and 9.5 ns at 5.0 V. It provides output drive capabilities of 24 mA for both sourcing and sinking currents, with a maximum quiescent supply current of 80 µA.

Latches Feature Summary

• Contains eight D-type latches in a single package
• Features 3-state outputs suitable for bus interfacing
• Outputs capable of sourcing and sinking 24 mA

Latches Applications

• Bus organized system applications
• Data storage and transfer
• Interface between logic circuits and buses

Latches Procurement Notes

Verify the specific ordering suffix to confirm the package type and shipping quantity. The DW suffix indicates a SOIC-20 Wide package. Confirm whether the part includes the G suffix for lead-free compliance. Check moisture sensitivity levels and recommended soldering profiles before assembly.

Latches Selection Notes

Select this component when an octal latch with high drive capability is required. Ensure the operating voltage falls within the 2.0 V to 6.0 V range. Consider the AC series for broader voltage compatibility compared to ACT variants. Verify that the SOIC-20 package dimensions fit the PCB layout constraints.

Latches Part Context

This device belongs to the 74AC logic family, known for higher speed and wider voltage operation compared to standard 74LS or 74HC families. It serves as a direct functional replacement for other octal latches in bus-oriented designs requiring robust output drive.

Latches Replacement Considerations

MC74AC373DWR2G (Same function, Tape & Reel packaging)

Latches FAQ

What is the function of the Latch Enable (LE) input?

When LE is HIGH, the latches are transparent to data inputs. When LE transitions LOW, data present at the inputs is latched.

How does the Output Enable (OE) control the outputs?

When OE is LOW, the outputs are active. When OE is HIGH, the outputs enter a high impedance state.