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SN74HC139N
+Lista de MateriaisIC DECODER/DEMUX 1 X 2:4 16-PDIP
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FabricanteTexas Instruments
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Peça do Fabricante #SN74HC139N
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Ficha Técnica SN74HC139N DataSheet
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Especificações
| Atributo | Valor |
| Series | 74HC |
| Part Status | Active |
| Base Product Number | 74HC139 |
| Type | Decoder/Demultiplexer |
| Circuit | 1 x 2:4 |
| Independent Circuits | 2 |
| 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 | Through Hole |
| Package | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-PDIP |
| Packaging | Bulk, Tube |
Visão Geral
Description
Key features of the SN74HC139N include:
1. High-Speed Performance: With typical propagation delay times, it allows for swift signal processing.
2. Low Power Consumption: Thanks to its CMOS technology, it operates with reduced power requirements.
3. Wide Operating Voltage Range: It typically operates between 2V to 6V, making it suitable for various applications.
4. Standard TTL Compatibility: Ensures easy interfacing with TTL logic levels.
5. Enable Input: Each decoder has an enable input that must be low for normal operation, providing added control.
Common applications include memory address decoding, data routing, and logic signal multiplexing in digital systems.
Equivalent
Features
1. Dual Decoders: Contains two independent 2-to-4 decoders, each with a 2-bit binary address input and four mutually exclusive outputs.
2. High-Speed Operation: Part of the HC (High-Speed CMOS) family, ensuring fast operation suitable for a variety of applications.
3. Low Power Consumption: Operates with low power dissipation, making it energy efficient.
4. Wide Operating Voltage: Supports a voltage range of 2V to 6V, providing flexibility for different circuit designs.
5. Standard Inputs: Compatible with TTL input conditions.
6. Output Drive Capability: Can drive up to 10 low-power Schottky TTL loads.
7. Noise Immunity: Features high noise immunity for reliable operation.
8. Package Type: Typically available in a 16-pin DIP (Dual In-line Package).
These features make the SN74HC139N suitable for use in digital circuits for decoding binary information, data routing, and demultiplexing tasks.
Pinout
1. Enable Input (G): When this pin is low, the corresponding decoder is enabled, allowing it to operate.
2. Address Inputs (A0, A1): These two pins are used for selecting one of the four outputs.
3. Outputs (Y0, Y1, Y2, Y3): These are the four outputs for each decoder, with only one being active (low) at any given time, depending on the address inputs.
The chip operates on a supply voltage (Vcc) and has a ground pin (GND) common to both decoders. When enabled, the selected output is driven low, while the others remain high. This functionality is used for tasks like memory address decoding and data routing.