74HC373D,653

Latches Overview

The Nexperia 74HC373D,653 is an octal D-type transparent latch with 3-state outputs housed in a SO20 plastic small outline package (SOT163-1). It features independent D-type inputs for each latch and a common latch enable (LE) input. The device operates within a supply voltage range of 2.0 V to 6.0 V. Static characteristics include a maximum supply current of 8 µA at 25 °C. Dynamic performance specifies propagation delays ranging from 12 ns to 45 ns depending on voltage and temperature conditions.

Latches Feature Summary

• Transparent operation allows data to pass directly to outputs when the latch enable signal is active.
• Three-state outputs facilitate connection to bus-oriented applications through high-impedance states.
• Inputs incorporate clamp diodes to support interfacing with voltages exceeding the supply rail.

Latches Applications

• Bus-oriented data storage systems
• Microprocessor memory interface circuits
• Portable battery-powered equipment

Latches Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Confirm that the component meets RoHS compliance standards required for your manufacturing process. Ensure the ambient operating temperature range aligns with your system design constraints before finalizing procurement.

Latches Selection Notes

Select this component for designs requiring eight-bit data latching with tri-state output control. The CMOS technology ensures low power consumption suitable for battery-operated devices. Verify that the input logic levels match the driving circuitry, as HC series inputs require CMOS level compatibility rather than TTL levels.

Latches Part Context

This part belongs to the 74HC family of high-speed CMOS logic devices manufactured by Nexperia. It serves as a digital storage element within larger logic systems. The device is designed to replace older standard logic families while offering improved noise immunity and lower power dissipation characteristics compared to legacy alternatives.

Latches Replacement Considerations

• 74HCT373D,653

Latches FAQ

How does the latch enable input affect data transparency?

When the latch enable input is HIGH, the latches are transparent, meaning the output changes immediately with the input. When the input transitions LOW, the data present at the inputs is stored in the latches.

What is the function of the output enable input?

The output enable input controls the three-state nature of the outputs. A HIGH signal on this input forces all outputs into a high-impedance OFF-state, effectively disconnecting them from the circuit without affecting the internal latch state.