Overview
The MC74AC139DR2G, produced by onsemi, is a high-speed, dual 1-of-4 decoder/demultiplexer. This device features two independent decoders, each accepting two inputs and providing four mutually-exclusive active-LOW outputs. Each decoder includes an active-LOW Enable input, which can also be used as a data input for a 4-output demultiplexer. This multifunctional capability allows each half of the device to be used as a function generator, providing four minterms of two variables.
Key Specifications
| Parameter | Value |
|---|---|
| Device Type | Dual 1-of-4 Decoder/Demultiplexer |
| Number of Decoders | 2 |
| Inputs per Decoder | 2 |
| Outputs per Decoder | 4 (active-LOW) |
| Enable Input | Active-LOW |
| Output Current | 24 mA (source/sink) |
| Operating Supply Voltage | 2 V to 6 V |
| Typical Operating Supply Voltage | 5 V |
| Operating Temperature Range | -40 °C to 85 °C |
| Package Type | SOIC16 (Surface Mount) |
| Package Dimensions | 10 mm (length) x 4 mm (width) x 1.5 mm (height) |
Key Features
- Multifunction capability: Can be used as decoders, demultiplexers, or function generators.
- Two completely independent 1-of-4 decoders.
- Active-LOW mutually exclusive outputs.
- Outputs source/sink 24 mA.
- ACT139 has TTL compatible inputs.
- Pb-free package options available.
Applications
The MC74AC139DR2G is versatile and can be used in various applications, including:
- Logic circuits requiring decoding or demultiplexing functions.
- Function generation in digital systems.
- Automotive, communications, computing, consumer, industrial, and medical devices where high-speed logic operations are necessary.
Q & A
- What is the primary function of the MC74AC139DR2G?
The primary function is as a dual 1-of-4 decoder/demultiplexer. - How many independent decoders does the device have?
The device has two independent decoders. - What is the nature of the outputs provided by each decoder?
Each decoder provides four mutually-exclusive active-LOW outputs. - What is the role of the Enable input on each decoder?
The Enable input is active-LOW and can also be used as a data input for a 4-output demultiplexer. - What is the typical operating supply voltage for the MC74AC139DR2G?
The typical operating supply voltage is 5 V. - What is the operating temperature range for the device?
The operating temperature range is -40 °C to 85 °C. - What type of package is the MC74AC139DR2G available in?
The device is available in a SOIC16 (Surface Mount) package. - Does the MC74AC139DR2G have Pb-free package options?
Yes, Pb-free package options are available. - What are some common applications for the MC74AC139DR2G?
Common applications include logic circuits, function generation in digital systems, and various industrial and medical devices. - Can the MC74AC139DR2G be used in automotive applications?
Yes, it can be used in automotive applications due to its robust operating temperature range and reliability.
