MC74ACT373DT

Latches Overview

The MC74ACT373DT is an octal transparent latch with three-state outputs manufactured by onsemi. It belongs to the 74ACT logic series and operates within a supply voltage range of 4.5 V to 5.5 V. The device features eight independent D-type latches in a single package, providing non-inverting data paths. Key electrical parameters include a propagation delay of 10 ns at 5 V, a static current of 8 µA, and output drive capabilities of 32 mA for low-level and -24 mA for high-level states. It is housed in a TSSOP-20 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Latches Feature Summary

• Provides eight independent transparent latches for bus-oriented system applications
• Features three-state outputs controlled by an Output Enable input
• Data appears on the bus when Latch Enable is HIGH and Output Enable is LOW

Latches Applications

• Bus-oriented system data storage
• Register applications requiring tri-state control
• Memory mapping circuits

Latches Procurement Notes

Verify the specific suffix 'DT' against the manufacturer's official datasheet to confirm the TSSOP-20 package type and tape-and-reel or tube packaging details. Ensure the component meets RoHS compliance requirements as specified in the latest environmental declarations. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Latches Selection Notes

Select this component for designs requiring high-speed latching with reduced power consumption compared to older logic families. The 74ACT series offers CMOS compatibility with TTL noise margins. Consider the 10 ns propagation delay and 32 mA drive strength for driving moderate loads. Verify that the 4.5 V to 5.5 V supply voltage aligns with the system's power rails.

Latches Part Context

This part is part of the 74AC/74ACT family of octal latches. It serves as a digital storage element where data is captured on the rising edge of the latch enable signal. The three-state capability allows multiple devices to share a common bus without interference when disabled. It is functionally similar to other octal latches but optimized for faster switching speeds and lower quiescent current.

Latches Replacement Considerations

Direct substitutes include SN74ACT373PW and SN74ACT373PWR from Texas Instruments. These alternatives offer compatible pinouts and electrical characteristics for direct replacement in existing designs.