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SN74LS00DR

Updated: 2026-07-17

Overview

The SN74LS00DR is a quad 2-input NAND gate IC manufactured by Texas Instruments, part of the 74LS series of TTL logic devices. It contains four independent NAND gates, each with two inputs and one output. This IC is designed for high-speed digital logic applications and is widely used in industrial, computing, and consumer electronics. The SN74LS00DR operates within a supply voltage range of 4.75V to 5.25V, making it compatible with standard TTL logic levels. Its SOIC-14 package is ideal for surface-mount applications, offering a compact and efficient solution for modern electronic designs.

Structure and Working Principle

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The SN74LS00DR consists of four NAND gates, each performing the logical NAND operation. A NAND gate outputs a low signal only when all inputs are high; otherwise, it outputs a high signal. This behavior is fundamental in digital logic circuits for constructing more complex functions like flip-flops, counters, and memory units. The IC operates on TTL technology, which uses bipolar transistors to achieve fast switching speeds and robust performance. The internal circuitry ensures low power consumption while maintaining high noise immunity, making it suitable for noisy industrial environments.

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Key Features

The SN74LS00DR offers several advantages, including low power dissipation (typically 2mW per gate) and high-speed operation with propagation delays of around 9ns. Its high noise immunity ensures reliable performance in electrically noisy environments. Another notable feature is its wide operating temperature range (-40°C to 85°C), making it suitable for industrial and automotive applications. The SOIC-14 package provides a compact footprint, ideal for space-constrained designs.

Application Areas

This IC is commonly used in digital systems where logical operations are required, such as in microprocessors, data processing units, and control systems. It is also found in consumer electronics like televisions, audio equipment, and gaming consoles. In industrial settings, the SN74LS00DR is used in automation systems, robotics, and instrumentation. Its reliability and speed make it a preferred choice for designers working on time-critical applications.

Maintenance and Precautions

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To ensure longevity, avoid exposing the SN74LS00DR to static electricity, which can damage the sensitive semiconductor components. Always use proper ESD (electrostatic discharge) handling procedures during installation and maintenance. Maintain the supply voltage within the specified range (4.75V to 5.25V) to prevent malfunction or damage. Overvoltage or undervoltage can lead to unreliable operation or permanent failure.

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B2B Procurement Guide

When procuring the SN74LS00DR in bulk, verify the supplier's authenticity to avoid counterfeit components. Texas Instruments is the original manufacturer, but authorized distributors like Digi-Key, Mouser, and Arrow Electronics are reliable sources. Consider lead times and minimum order quantities (MOQs) when planning purchases. Bulk orders often qualify for discounts, so negotiate pricing based on volume. Ensure the components meet your application's temperature and performance requirements.

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