MC74AC373NG

Latches Overview

The MC74AC373NG 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 eight D-type latches in a single package, providing non-inverting data storage. Propagation delays are specified at 13.5 ns maximum at 3.3 V and 9.5 ns maximum at 5.0 V. Quiescent supply current is typically 8 µA at 5.5 V. Outputs can source or sink up to 24 mA.

Latches Feature Summary

• Contains eight D-type latches for bus-organized system applications
• Features 3-state outputs controlled by Output Enable (OE) input
• Outputs provide high drive capability sourcing and sinking 24 mA
• Transparent operation when Latch Enable (LE) is HIGH

Latches Applications

• Bus organized system applications
• Data storage and buffering
• Bus interfacing

Latches Procurement Notes

Verify the specific package type required for your design, as the MC74AC373 series is available in SOIC-20W, TSSOP-20, and DIP-20 configurations. Confirm that the ordering suffix matches the desired packaging format, such as tape and reel or tube. Ensure compatibility with RoHS standards if environmental compliance is a project requirement. Check moisture sensitivity levels appropriate for your assembly process.

Latches Selection Notes

Select this component for designs requiring multiple latched outputs with tri-state control. The AC series offers wider voltage flexibility compared to ACT variants. Consider propagation delay specifications relative to your clock speeds. Verify that the output current capabilities meet the load requirements of your connected circuitry without exceeding absolute maximum ratings.

Latches Part Context

This part belongs to the 74AC logic family, known for high-speed CMOS performance. It serves as a standard octal latch solution for digital systems. The device complements other 74-series logic components like flip-flops and gates. It is designed for general-purpose digital signal processing and memory interface tasks where data retention and bus isolation are necessary.

Latches Replacement Considerations

Direct substitutes include the SN74AC373N from Texas Instruments. Other compatible options may include CD74AC373E from Texas Instruments. Verify pinout compatibility and electrical characteristics before swapping manufacturers.

Latches FAQ

What controls the 3-state output condition?

The Output Enable (OE) input controls the state. When OE is LOW, outputs are active; when HIGH, they enter a high impedance state.

How does the Latch Enable (LE) input function?

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