SN74HCT373NE4

Latches Overview

The SN74HCT373NE4 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 features high-current true outputs capable of driving up to 15 LSTTL loads. The device provides ±6-mA output drive at 5 V, low input current of 1 μA max, and typical propagation delay of 21 ns. It is housed in a 20-pin PDIP package.

Latches Feature Summary

• Transparent D-type latching mechanism where outputs follow inputs while latch-enable is high
• High-current 3-state outputs designed for driving highly capacitive or low-impedance loads
• TTL-voltage compatible inputs ensuring compatibility with standard logic families

Latches Applications

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

Latches Procurement Notes

Verify the component matches the specific SN74HCT373NE4 designation, confirming the 'N' suffix indicates the PDIP package and 'E4' denotes lead-free status. Ensure the datasheet revision aligns with current design requirements. Confirm RoHS compliance and check for any recent documentation updates regarding thermal resistance values or pin configurations before finalizing procurement.

Latches Selection Notes

Select this component when designing circuits requiring parallel data storage with bus-compatible outputs. It is suitable for applications needing to drive multiple loads without interface components. Consider the operating temperature range of -40°C to 85°C and the 20-pin PDIP form factor for through-hole mounting constraints.

Latches Part Context

This part belongs to the SNx4HCT373 family of octal transparent D-type latches. It shares functional characteristics with other variants like SN74HCT373DW (SOIC) and SN74HCT373PWR (TSSOP), differing primarily in packaging and thermal properties. The HCT series ensures TTL compatibility while maintaining CMOS power efficiency.

Latches Replacement Considerations

Direct pin-compatible substitutes include SN74HCT373N and SN74HCT373N.A. Verify that alternative packages such as SOIC or TSSOP variants meet mechanical space requirements.