SN74HCT373PW

Latches Overview

The SN74HCT373PW 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 typical propagation delays of 21 ns at 5.5 V, with output drive capabilities of ±6 mA. It utilizes a 20-pin TSSOP package measuring 6.50 mm by 4.40 mm.

Latches Feature Summary

• Transparent D-type latching mechanism where outputs follow inputs during the high latch-enable state
• High-current 3-state outputs designed for driving capacitive or low-impedance loads
• TTL-voltage compatible inputs with low input current requirements
• Output-enable control allows isolation without affecting internal latch data retention

Latches Applications

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

Latches Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest Package Option Addendum. Confirm that the component status matches project requirements, as the PW package variant may be listed as obsolete while the PWR tape-and-reel version remains active. Ensure RoHS compliance and lead finish specifications align with assembly processes.

Latches Selection Notes

Select this component when TTL-compatible logic levels are required in a CMOS environment. The HCT series ensures compatibility with standard TTL inputs while offering lower power consumption than older HC variants. Verify that the 3-state output capability meets system bus isolation needs and that the TSSOP package dimensions fit the available PCB footprint constraints.

Latches Part Context

This device belongs to the SNx4HCT373 family of octal latches. It shares functional characteristics with other packages in the series, such as SOIC (DW) and SOP (NS), but differs in physical dimensions and thermal resistance values. The TSSOP package provides a compact surface-mount solution suitable for space-constrained designs requiring parallel data storage.

Latches Replacement Considerations

• SN74HCT373PWR