MC74HC138ADR2G

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MC74HC138ADR2G

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

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Spécifications

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 -55°C ~ 125°C
Mounting Type Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SOIC

Vue d'ensemble

Description

The MC74HC138ADR2G is a high-speed CMOS decoder/demultiplexer that operates on a supply voltage of 2V to 6V. It features a 3-to-8 line decoding capability, which means it can convert three binary input signals into one of eight outputs. Only one output is activated (low) at a time based on the binary value of the inputs, while the others remain high. The device also includes three enable inputs that allow for additional control over the outputs.
Key features include low power consumption, high noise immunity, and compatibility with standard TTL logic levels. The MC74HC138ADR2G is often used in applications such as memory address decoding, data routing, and control signal generation. It comes in a compact surface-mount SOIC-16 package, making it suitable for various electronic circuit designs.

Features

The MC74HC138ADR2G is a high-speed CMOS 3-to-8 line decoder/demultiplexer. Key features include:
1. 3-to-8 Line Decoding: It accepts three binary inputs (A0, A1, A2) and activates one of eight outputs (Y0 to Y7) based on the binary value of the inputs.
2. Active Low Outputs: The outputs are active low, meaning the selected output is driven low (0) while all others remain high (1).
3. Enable Inputs: It has three enable inputs (G1, G2A, G2B) that control the decoder operation; when not enabled, all outputs remain high.
4. Wide Supply Voltage Range: Operates from 2V to 6V, making it compatible with various logic levels.
5. High-Speed Operation: Capable of operating at high speeds, with propagation delay typically around 15 ns at Vcc = 5V.
6. Low Power Consumption: CMOS technology results in low static and dynamic power consumption.
7. Pin-Compatible with 74LS138: It is pin-compatible with the original 74LS138, allowing for easy integration into existing designs.
Ideal for applications in data routing and memory decoding.

Package

The MC74HC138ADR2G is packaged in a SOIC-16 (Small Outline Integrated Circuit) form factor. It features 16 pins and is designed for surface mounting on PCBs.

Pinout

The MC74HC138ADR2G is a 3-to-8 line decoder/demultiplexer with a total of 16 pins. Its main function is to decode a 3-bit binary input to one of eight active low outputs.
Pin Count and Functions:
1. A0 (Pin 1) - Input 0
2. A1 (Pin 2) - Input 1
3. A2 (Pin 3) - Input 2
4. G1 (Pin 4) - Enable input (active high)
5. G2A (Pin 5) - Enable input (active low)
6. G2B (Pin 6) - Enable input (active low)
7. Y0 (Pin 7) - Output 0 (active low)
8. Y1 (Pin 8) - Output 1 (active low)
9. Y2 (Pin 9) - Output 2 (active low)
10. Y3 (Pin 10) - Output 3 (active low)
11. Y4 (Pin 11) - Output 4 (active low)
12. Y5 (Pin 12) - Output 5 (active low)
13. Y6 (Pin 13) - Output 6 (active low)
14. Y7 (Pin 14) - Output 7 (active low)
15. VCC (Pin 15) - Power supply
16. GND (Pin 16) - Ground
This device is widely used in digital circuits for address decoding and data routing applications.

Manufacturer

The manufacturer of the MC74HC138ADR2G is ON Semiconductor. ON Semiconductor is a global semiconductor company that specializes in designing and manufacturing a wide range of electronic components, including integrated circuits, power management solutions, and sensors. The company serves various industries, such as automotive, industrial, communications, and consumer electronics. ON Semiconductor focuses on providing innovative solutions to enable energy efficiency and performance in electronic devices.

Application

The MC74HC138ADR2G is a high-speed CMOS 3-to-8 line decoder/demultiplexer. Its application areas include memory address decoding, data routing in digital circuits, signal demultiplexing, and implementing control functions in microprocessor systems. It is commonly used in communication systems, digital logic designs, and as a part of larger integrated circuits to expand the number of output lines from binary inputs.

Equivalent

The MC74HC138ADR2G is a 3-to-8 line decoder/demultiplexer. Equivalent products include:
1. 74HC138 (various suffixes)
2. 74HCT138
3. 74LS138
4. 74AC138
5. 74AHC138
Make sure to verify the specific logic levels and packaging to ensure compatibility with your application.

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