SN74LS373ML1

Latches Overview

The SN74LS373ML1 is an octal D-type transparent latch featuring three-state outputs, belonging to the 74LS logic family. It integrates eight independent D-type latches within a single package, designed for bus-oriented systems and high-capacitance or low-impedance loads. The device operates with a standard supply voltage of 5V (range 4.75V to 5.25V) and supports commercial temperature ranges. Its architecture includes shared latch enable (LE) and output enable (OE) inputs, allowing parallel data access and controlled bus driving capabilities without external pull-up components.

Latches Feature Summary

• Integrates eight transparent D-type latches with tri-state outputs for efficient bus management
• Features Schmitt-trigger inputs on the latch enable pin to improve noise immunity
• Designed specifically for driving high capacitive or relatively low impedance loads directly

Latches Applications

• Address latching in microcomputer systems, particularly with MCS-51 series microcontrollers
• Buffer registers for temporary data storage in digital circuits
• Bidirectional bus drivers for I/O port expansion

Latches Procurement Notes

Verify the manufacturer designation carefully, as 'SN' prefixes are typically associated with Texas Instruments while 'onsemi' uses different coding conventions. Confirm the specific suffix 'ML1' against official onsemi documentation to ensure it corresponds to the correct SOIC-20 package variant and lead-free status. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Latches Selection Notes

Select this component when a TTL-compatible octal latch with tri-state control is required for bus isolation. Ensure the system voltage remains within the 4.75V to 5.25V range. Consider the propagation delay characteristics typical of the LS series if timing constraints are critical. Verify that the package type matches the PCB footprint requirements.

Latches Part Context

This component is part of the widely used 74xx series of logic integrated circuits, specifically the Low-power Schottky (LS) subset. It serves as a fundamental building block for digital design, enabling data retention and bus arbitration. Similar devices include the 74HC373 and 74HCT373, which offer CMOS compatibility but differ in voltage ranges and speed characteristics.