SN74HC373DBR

Overview

The SN74HC373DBR 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 31 ns depending on voltage and load conditions.

Feature Summary

• Transparent data latching behavior where outputs follow inputs while the latch-enable signal is active
• High-current three-state outputs designed to drive heavy loads without external interface components
• Independent output enable control allowing data retention or entry while outputs are in a high-impedance state

Applications

• Implementing buffer registers in digital systems
• Configuring I/O ports for microcontroller interfaces
• Serving as bidirectional bus drivers
• Functioning as working registers in parallel access architectures

Procurement Notes

Verify that the DB suffix corresponds to the SSOP package variant when sourcing replacements. Confirm RoHS compliance status matches project requirements. Ensure the specific ordering suffix aligns with the required tape and reel packaging format for automated assembly processes.

Selection Notes

Select this component when high-drive capability is necessary for interfacing with multiple logic gates. The HC series offers CMOS compatibility with standard TTL loads. Consider the SSOP package dimensions against available PCB real estate constraints during the layout phase.

Part Context

This part belongs to the SN74HC373A family of octal latches. It shares functional characteristics with other variants like the SN74HC373APWR but differs in physical packaging. The device is a standard catalog item intended for general-purpose digital logic applications requiring parallel data storage.

Replacement Considerations

• SN74HC373ADBR