DM74LS51N

Gates And Inverters - Multi-Function, Configurable Overview

The DM74LS51N is a dual AND-OR-INVERT gate integrated circuit manufactured by onsemi. It contains two independent logic circuits: one 2-wide 2-input gate and one 2-wide 3-input gate. The device operates within a supply voltage range of 4.75V to 5.25V at a nominal 5V. It features a propagation delay of 8ns maximum for LOW-to-HIGH transitions and 5ns maximum for HIGH-to-LOW transitions under standard test conditions (CL=50pF, RL=2kΩ). The component utilizes a 14-Lead Plastic Dual-In-Line Package (PDIP) with a JEDEC MS-001 footprint.

Gates And Inverters - Multi-Function, Configurable Feature Summary

• Contains two independent AND-OR-INVERT logic functions within a single package
• Supports configurable 2-wide 2-input and 2-wide 3-input logic combinations
• Provides differential outputs for each logic gate structure

Gates And Inverters - Multi-Function, Configurable Applications

• Digital logic circuit design requiring combined AND-OR-INVERT functionality
• General-purpose combinatorial logic applications in TTL systems
• Industrial control logic implementations using standard 74LS series components

Gates And Inverters - Multi-Function, Configurable Procurement Notes

Verify the specific ordering code suffix when sourcing replacements, as tape and reel availability requires appending an 'X' to the base part number. Confirm that the procurement channel supplies the PDIP variant matching the N14A package description. Ensure the component meets the required operating temperature range of 0°C to +70°C for intended deployment environments.

Gates And Inverters - Multi-Function, Configurable Selection Notes

Select this component when a design requires two distinct AND-OR-INVERT gates without consuming separate IC footprints. The LS series offers standard TTL compatibility while maintaining lower power consumption compared to earlier S-series devices. Verify input voltage thresholds meet system requirements, specifically the 0.8V low-level and 2V high-level specifications.

Gates And Inverters - Multi-Function, Configurable Part Context

This device belongs to the 74LS logic family, characterized by Schottky-clamped transistors for improved switching speed and reduced power dissipation. The DM74LS51N represents a legacy component originally developed by Fairchild Semiconductor before the acquisition by onsemi. It serves as a functional equivalent to other generic 74LS51 variants across different manufacturers.

Gates And Inverters - Multi-Function, Configurable Replacement Considerations

SN74LS51N from Texas Instruments is documented as a direct substitute.