MC74VHCT373ADWR2G

Latches Overview

The MC74VHCT373ADWR2G is an octal D-type latch with 3-state output fabricated using silicon gate CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature from -40°C to +85°C. The device features TTL-compatible inputs, enabling level conversion between 3.3 V and 5.0 V systems. Key electrical parameters include a maximum propagation delay (D to Q) of 10.5 ns at 5.0 V with a 50 pF load, and a typical quiescent supply current of 4.0 µA. Outputs provide full 5.0 V CMOS swings and include power-down protection.

Latches Feature Summary

• TTL-compatible inputs allow direct interfacing with standard logic families and facilitate level conversion between 3.3 V and 5.0 V systems.
• Outputs remain in high-impedance state when the output enable input is high, providing effective bus isolation.
• Internal circuitry includes buffer outputs designed for high noise immunity and stable signal transmission.
• Output structures incorporate protection mechanisms against supply voltage mismatches, battery backup scenarios, and hot insertion events.

Latches Applications

• Level shifting interfaces between 3.3 V and 5.0 V digital systems
• Parallel data storage in microprocessor-based architectures
• Bus-oriented memory register implementations

Latches Procurement Notes

Verify that the ordering suffix matches the required package type, as the DW suffix specifically denotes the SOIC-Wide-20 package. Confirm RoHS compliance status and lead-free marking requirements for your assembly process. Ensure the voltage supply range aligns strictly with the VHCT specification limits of 4.5 V to 5.5 V to maintain guaranteed performance characteristics.

Latches Selection Notes

Select this component when TTL-level input compatibility is required alongside CMOS low-power dissipation. It serves as a suitable alternative to standard HC series latches where noise immunity and specific voltage translation capabilities are necessary. Consider the 3-state output functionality for shared bus applications requiring controlled impedance states during inactive periods.

Latches Part Context

This part belongs to the MC74VHC373/MC74VHCT373A family of advanced high-speed CMOS octal latches. The VHCT variant specifically distinguishes itself through TTL-compatible input thresholds, whereas the VHC version utilizes standard CMOS input levels. Both variants share identical pinouts and functional behaviors, differing primarily in input voltage requirements and switching speed characteristics under varying supply conditions.

Latches Replacement Considerations

MC74VHCT373ADWRG