SN74F2373N

Overview

The SN74F2373N 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 an operating temperature range of 0°C to 70°C. The device features buffered control inputs and includes nominal 25-Ω sink resistors in the output configuration to reduce signal overshoot and undershoot. It provides full parallel access for loading and can sink up to 12 mA at low logic levels.

Feature Summary

• Transparent D-type latching mechanism where outputs follow data inputs while the latch-enable signal is high
• Integrated 25-Ω sink resistors designed to minimize signal overshoot and undershoot on bus lines
• Buffered output-enable input allows switching between normal logic states and high-impedance state without affecting internal latch operations

Applications

• Bus-oriented memory mapping systems requiring addressable latching
• Parallel-to-serial conversion circuits utilizing transparent latch functionality
• I/O port expansion designs needing high-drive capability with controlled impedance

Procurement Notes

Verify the specific package variant, as the SN74F2373 series includes active SOIC and SSOP options alongside the PDIP version. Confirm that the design accommodates the specified 25-Ω internal sink resistance characteristics. Ensure the application environment remains within the 0°C to 70°C operating temperature range defined for this component.

Selection Notes

Select this component when designing systems that require octal latching with integrated termination resistors to improve signal integrity. The buffered control inputs facilitate direct interfacing with standard logic drivers. Consider the 3-state output capability for multiplexed bus architectures where high-impedance isolation is necessary.

Part Context

This part belongs to the SN74F2373 family of octal transparent D-type latches. While functionally similar to the SN74F373, it distinguishes itself through the inclusion of internal 25-Ω sink resistors. This feature differentiates it from standard variants by providing enhanced drive characteristics suitable for specific bus loading requirements.

Replacement Considerations

The SN74F373N serves as a functional substitute but lacks the integrated 25-Ω sink resistors found in the SN74F2373N. Designers must evaluate whether the absence of internal termination resistors impacts signal integrity in the target application.