SN74HCT373DBRG4

Latches Overview

The SN74HCT373DBRG4 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 V, with output drive capabilities of ±6 mA. It utilizes a 20-pin SSOP package.

Latches Feature Summary

• Transparent D-type latching mechanism where outputs follow inputs during the high latch-enable state
• Three-state outputs capable of driving highly capacitive or low-impedance loads
• TTL-voltage compatible inputs for direct interfacing

Latches Applications

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

Latches Procurement Notes

Verify the specific 'G4' suffix indicates lead-free and RoHS compliance status against current manufacturer documentation. Confirm the DB package designation corresponds to the SSOP form factor in the latest orderable addendum. Ensure the component meets the required thermal resistance specifications for the intended PCB layout environment.

Latches Selection Notes

Select this component when an 8-bit parallel data storage solution with tri-state control is required. It is suitable for designs needing TTL-compatible input levels and moderate speed performance. Consider the SSOP package dimensions for board space constraints compared to SOIC or TSSOP alternatives.

Latches Part Context

This part belongs to the SNx4HCT373 family of octal transparent D-type latches. The HCT series ensures compatibility with standard TTL logic families while utilizing CMOS technology for lower power consumption. The device integrates eight independent latches into a single integrated circuit package.

Latches Replacement Considerations

SN74HCT373DWR

Latches FAQ

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

The OE pin places outputs in a high-impedance state but does not affect the internal operation of the latches, allowing data retention or entry while outputs are disabled.

What is the function of the Latch Enable (LE) input?

When LE is high, the Q outputs follow the D inputs (transparent mode). When LE goes low, the outputs are latched at the levels present at the D inputs.