74F373LC

Latches Overview

The SN74F373LC is an octal transparent latch with 3-state outputs manufactured by National Semiconductor. It features eight D-type latches coupled to three-state output buffers, controlled independently by enable (E) and output enable (OE) inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 7 ns at 5 V, a low-level output current of 32 mA, and a high-level output current of -3 mA. It supports through-hole mounting in a PDIP-20 package and functions within a temperature range of 0 °C to +70 °C.

Latches Feature Summary

• Octal transparent latch design for bus-oriented system applications
• Three-state outputs designed for heavily loaded buses and MOS memories
• Glitch-free operation during power-up and power-down cycles

Latches Applications

• Bus-oriented system data storage
• Driving heavily loaded three-state buses
• Interfacing with MOS memories or microprocessors

Latches Procurement Notes

Verify the specific manufacturer origin, as Texas Instruments acquired National Semiconductor. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the PDIP-20 package variant matches the required PCB footprint and thermal specifications for the target application environment.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for bus interfacing. Consider the 7 ns propagation delay and 32 mA sink capability for speed and drive requirements. Verify that the commercial temperature range (0 °C to +70 °C) meets the operational environmental constraints of the final assembly.

Latches Part Context

This part belongs to the 74F logic family, known for fast switching speeds. It is functionally similar to other octal latches like the 74LS373 but offers higher performance. The device serves as a common register for temporary data storage in digital systems requiring tri-state bus control.

Latches Replacement Considerations

Compatible substitutes include the NXP 74F373 and Fairchild 74F373. These parts share identical pinouts and logical functionality. Verify package compatibility and electrical parameter tolerances before substitution.