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74HC139D

Name: 74HC139D
Rating: 4.7 (12 reviews)

IC DECODER/DEMUX 1X2:4 16SOIC

Производитель
Мфр. Часть #74HC139D
Пакет SOIC-16
Лист данных
В наличии7190

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Спецификации

Package	Tape & Reel (TR),Cut Tape (CT)
Series	74HC
ProductStatus	Obsolete
Type	Decoder/Demultiplexer
Circuit	1 x 2:4
IndependentCircuits	2
Current-OutputHighLow	5.2mA, 5.2mA
VoltageSupplySource	Single Supply
Voltage-Supply	2V ~ 6V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	16-SOIC (0.154, 3.90mm Width)

Обзор

Description

The 74HC139D is a dual 2-to-4 line decoder/demultiplexer integrated circuit. It features two identical decoders, each capable of converting a 2-bit binary input into a corresponding one-hot output on four lines. The device has two enable inputs, which allow for control over its operation, ensuring that it only functions when enabled.
Key features include:
- Dual 2-line to 4-line decoding, allowing for greater flexibility in circuit design.
- Active low outputs, meaning that when a particular input combination is received, the corresponding output goes low while the others remain high.
- High-speed operation, suitable for high-frequency applications.
- TTL compatibility, making it suitable for interfacing with various logic families.
It is commonly used in memory address decoding, data routing, and other applications where binary data needs to be directed to specific outputs. The 74HC139D is available in various package types, including DIP and surface mount, making it easy to integrate into different electronic designs.

Features

The 74HC139D is a dual 2-to-4 line decoder/demultiplexer, featuring CMOS technology for enhanced performance. Key features include:
1. Dual Decoders: Contains two independent decoders, allowing for multiple decoding functions in one package.
2. 4 Output Lines: Each decoder has four outputs, enabling selection of one of four outputs based on the 2-bit binary input.
3. Active-Low Outputs: Outputs are active-low, meaning the selected output goes low while others remain high.
4. Wide Voltage Range: Operates with a power supply voltage from 2V to 6V, making it versatile for various applications.
5. High-Speed Operation: Offers high-speed switching with a propagation delay of around 15ns at 5V.
6. Low Power Consumption: Consumes low static and dynamic power, making it suitable for battery-operated devices.
7. Pin Compatibility: Compatible with standard 74 series logic ICs, simplifying integration into existing designs.
The 74HC139D is widely used in digital applications, including data routing, memory selection, and more.

Package

The 74HC139D is packaged in a dual in-line package (DIP) format, specifically a 16-pin DIP. It is also available in surface-mount options such as SOIC (Small Outline Integrated Circuit) and TSSOP (Thin Shrink Small Outline Package), depending on the manufacturer.

Pinout

The 74HC139D is a dual 2-to-4 line decoder/demultiplexer with a total of 16 pins. Its pin count and functions are as follows:
- Pin Count: 16 pins
- Functions:
- A1, A0 (Pins 1, 2): Input address lines.
- G1 (Pin 3): Active high enable input.
- G2A, G2B (Pins 4, 5): Active low enable inputs.
- Y0 to Y3 (Pins 6, 7, 8, 9): Outputs that correspond to the input combinations (active low).
- GND (Pin 10): Ground.
- VCC (Pin 16): Power supply (typically +2V to +6V).
- NC (Pins 11, 12, 13, 14, 15): No connection.
The device decodes the binary values on the inputs (A1, A0) to activate one of the four outputs (Y0 to Y3) based on the enable signals.

Manufacturer

The 74HC139D is manufactured by Texas Instruments (TI), a leading semiconductor company based in the United States. Texas Instruments specializes in designing and manufacturing a wide range of electronic components, including integrated circuits (ICs), microcontrollers, and analog technologies. Established in 1930, TI has a strong presence in various sectors, including consumer electronics, automotive, industrial, and communications.
The 74HC139D is a dual 2-to-4 line decoder/demultiplexer, which is commonly used in digital logic applications. Texas Instruments is known for its innovation and commitment to quality, providing reliable and high-performance products that meet the needs of engineers and designers worldwide.

Application

The 74HC139D is a dual 2-to-4 line decoder/demultiplexer used in various applications such as memory address decoding, data routing in digital circuits, and enabling/disabling specific devices in microcontroller systems. It can also serve in logic level conversion, state machine design, and as a signal routing element in communication systems. Its low power consumption and high-speed switching capabilities make it suitable for use in consumer electronics, automotive applications, and industrial control systems.

Equivalent

The 74HC139D chip, a dual 2-to-4 line decoder/demultiplexer, has several equivalent products, including:
1. 74HCT139 (TTL compatible)
2. 74AC139 (faster version)
3. 74AHC139 (high-speed CMOS)
Be sure to check the specific voltage and temperature ratings for compatibility in your application.

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