DM74LS373N

Latches Overview

The DM74LS373N is an octal D-type transparent latch manufactured by onsemi, formerly Fairchild Semiconductor. It features eight latches with totem-pole 3-STATE outputs designed for driving highly capacitive or low-impedance loads in bus-organized systems. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a free air operating temperature from 0°C to +70°C. Propagation delay times are specified between 18 ns and 27 ns for data-to-Q transitions at VCC = 5V. The component utilizes a 20-Lead Plastic Dual-In-Line Package (PDIP) conforming to JEDEC MS-001 standards.

Latches Feature Summary

• Transparent latch operation where outputs follow inputs while the enable signal is HIGH
• Three-state outputs capable of direct connection to bus lines without interface components
• Buffered control inputs to reduce DC loading on data lines

Latches Applications

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

Latches Procurement Notes

Verify current availability status as this component may be discontinued or subject to lifecycle changes. Confirm package integrity upon receipt, ensuring the PDIP housing matches the specified dimensions. Cross-reference ordering codes carefully, noting that suffixes such as 'X' indicate tape and reel packaging variations distinct from standard tube configurations.

Latches Selection Notes

Select this component when designing systems requiring parallel data access and high-drive capability for bus structures. Ensure the application environment remains within the recommended operating temperature range of 0°C to +70°C. Verify that the load impedance and capacitance requirements align with the device's output drive specifications to maintain signal integrity during high-logic level transitions.

Latches Part Context

This part belongs to the 74LS logic family, characterized by low-power Schottky technology. It shares pin compatibility with other devices in the series, such as the DM74LS374 flip-flop, though functional differences exist regarding edge-triggering versus transparency. The DM74LS373N specifically provides the latch functionality required for holding data states in synchronous digital designs.

Latches Replacement Considerations

Direct substitutes include the SN74LS373N from Texas Instruments. Other compatible options within the same logic family should be verified against specific electrical characteristics and package dimensions to ensure seamless integration into existing PCB layouts.