SN74HC138NSR

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SN74HC138NSR

IC DECODER/DEMUX 1 X 3:8 16-SO

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Thông số kỹ thuật

Series 74HC
Part Status Active
Base Product Number 74HC138
Type Decoder/Demultiplexer
Circuit 1 x 3:8
Independent Circuits 1
Current - Output High, Low 5.2mA, 5.2mA
Voltage Supply Source Single Supply
Voltage - Supply 2V ~ 6V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package 16-SOIC (0.209", 5.30mm Width)
Supplier Device Package 16-SO
Packaging Cut Tape (CT), Tape & Reel (TR)

Tổng quan

Description

The SN74HC138NSR is a high-speed, low-power 3-to-8 line decoder/demultiplexer from Texas Instruments, part of the 74HC family of logic devices. It converts binary input signals into a corresponding active low output, enabling the selection of one of eight outputs based on three input bits. The device features three enable inputs, allowing for versatile control over the output states.
Key specifications include a wide operating voltage range (2 V to 6 V), fast propagation delay (typically 8 ns at 5 V), and low power consumption. The SN74HC138NSR is designed for high-speed applications and is often used in memory address decoding, data routing, and circuit design where multiple output lines are required.
The package code "NSR" indicates a small-outline integrated circuit (SOIC) with 16 pins, making it suitable for compact designs. Its robust performance and ease of integration make it a popular choice among engineers and hobbyists in digital circuit design.

Features

The SN74HC138NSR is a high-speed CMOS 3-to-8 line decoder/demultiplexer. Key features include:
1. 3 Input Lines: It decodes three binary inputs (A0, A1, A2) into one of eight outputs (Y0 to Y7).
2. Active Low Outputs: Only one output is activated low (0) while all others are high (1), facilitating easy logic interfacing.
3. Enable Inputs: Two enable inputs (G1, G2A, G2B) allow for additional control, enabling or disabling the device operation.
4. Wide Voltage Range: Operates across a voltage range of 2V to 6V, compatible with various logic families.
5. High Speed: Capable of switching speeds up to 6 ns (typical at 5V), suitable for high-frequency applications.
6. Low Power Consumption: Designed for low power operation, making it ideal for battery-powered devices.
7. Pin-Compatible: Available in various packages, including surface mount (SMD), for easy integration into circuits.
These features make the SN74HC138NSR versatile for applications in digital systems, multiplexing, and data routing.

Package

The SN74HC138NSR is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) format.

Manufacturer

The SN74HC138NSR is manufactured by Texas Instruments (TI), a global technology company based in Dallas, Texas. Texas Instruments specializes in designing and producing semiconductors and various integrated circuits, including analog and digital signal processing devices. Established in 1930, TI is known for its innovations in electronics and plays a significant role in various sectors, including automotive, industrial, communications, and consumer electronics. The SN74HC138 is a high-speed CMOS 3-to-8 line decoder/demultiplexer, widely used in digital systems for data routing and control applications.

Application

The SN74HC138NSR is a 3-to-8 line decoder/demultiplexer used in various applications such as memory address decoding, data routing, and digital circuit design. It facilitates the selection of one of eight outputs based on three binary inputs, making it ideal for enabling specific devices in multiplexed systems. Common uses include microprocessor interfacing, communication systems, and control logic in automation and robotics.

Equivalent

The SN74HC138NSR is a 3-to-8 line decoder/demultiplexer. Equivalent products include:
1. 74HC138 (standard package variants)
2. MC14538 (RCA)
3. 74HCT138 (TTL compatible)
4. 74LS138 (Low-power Schottky)
5. 74HC154 (4-to-16 decoder)
Ensure compatibility with voltage levels and logic families when selecting alternatives.

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