SN74HC373DW

Overview

The SN74HC373DW is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature from -40°C to 85°C. The device features high-current true outputs capable of driving up to 15 LSTTL loads, making it suitable for highly capacitive or low-impedance applications. Propagation delay ranges from 12 ns to 37 ns depending on the voltage and load conditions.

Feature Summary

• High-current 3-state true outputs designed for driving highly capacitive or relatively low-impedance loads
• Transparent latch operation where Q outputs follow D inputs while latch-enable (LE) is high
• Output-enable (OE) input controls normal logic states or high-impedance state without affecting internal operations

Applications

• Implementing buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Procurement Notes

Verify the specific package type and lead finish against the datasheet ordering information. Confirm RoHS compliance status as indicated in the manufacturer's documentation. Ensure the component meets the required operating temperature range and voltage specifications for your application environment before finalizing procurement.

Selection Notes

Select this component when an octal latch with high drive capability is required. The HC series offers compatibility with standard CMOS logic levels. Consider the propagation delay characteristics relative to your system clock speed. Verify that the 3-state output functionality aligns with your bus architecture requirements.

Part Context

This part belongs to the SN74HC373A family of octal transparent D-type latches. It is available in various packages including SOIC, TSSOP, and PDIP. The device is designed for general-purpose digital logic applications requiring data storage and bus interfacing capabilities within standard industrial temperature ranges.

Replacement Considerations

Direct replacements include SN74HC373DWR and SN74HC373APWR. Verify pinout compatibility and electrical specifications such as propagation delay and output current drive capabilities before substitution.