SN74HCT373NG4

Latches Overview

The SN74HCT373NG4 is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum operating temperature of 85 °C. The device features high-current true outputs capable of driving up to 15 LSTTL loads, with typical output drive currents of ±6 mA at 5 V. Power consumption is low, with a maximum ICC of 80 μA. Typical propagation delay (tpd) is 21 ns. Inputs are TTL-voltage compatible with a maximum input current of 1 μA.

Latches Feature Summary

• Octal transparent D-type latches provide full parallel access for loading data.
• High-current 3-state true outputs designed for driving highly capacitive or low-impedance loads.
• TTL-voltage compatible inputs ensure compatibility with standard logic families.
• Low power consumption characteristics minimize overall system energy usage.

Latches Applications

• Buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Latches Procurement Notes

Verify the specific package type associated with the 'G4' suffix against the manufacturer's official orderable addendum. Confirm RoHS compliance status and lead finish specifications directly from the datasheet documentation. Ensure the ordering part number matches the required pin configuration and thermal metrics for the target application environment.

Latches Selection Notes

Select this component when designing circuits requiring octal data storage with tri-state bus interfacing capabilities. The HCT series ensures direct compatibility with TTL logic levels without additional level shifting. Consider the 3-state output functionality for multiplexed bus architectures where multiple devices share common data lines.

Latches Part Context

This device belongs to the SNx4HCT373 family of octal transparent D-type latches. It shares functional similarities with other members of the 74HCT series but offers specific packaging options. The G4 suffix typically indicates environmental compliance attributes such as lead-free manufacturing, consistent with Texas Instruments' product naming conventions for RoHS-compliant variants.

Latches Replacement Considerations

SN74HCT373N

Latches FAQ

How does the Output Enable (OE) input affect internal latch operations?

The OE input places outputs in a high-impedance state but does not affect the internal operations of the latches. Data can be retained or entered while outputs are disabled.

What is the behavior of the Q outputs when the Latch Enable (LE) input is low?

When LE is taken low, the Q outputs are latched at the logic levels that were present at the D inputs at the time of the transition.