SN74AHC139RGYR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics:
  • High-speed CMOS technology
  • Low power consumption
  • Wide operating voltage range
  • Schmitt-trigger inputs for noise immunity
• Package: 16-pin VQFN package
• Essence: This IC is a dual 2-to-4 line decoder/demultiplexer designed to decode one of two binary inputs and select the appropriate output based on the input combination.
• Packaging/Quantity: Available in reels, with 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6 ns (typical)
• Maximum Quiescent Current: 1 µA at 25°C

Detailed Pin Configuration

The SN74AHC139RGYR has a total of 16 pins, which are assigned as follows:

1. GND (Ground)
2. A0 (Input A0)
3. A1 (Input A1)
4. E (Enable Input)
5. Y0 (Output Y0)
6. Y1 (Output Y1)
7. Y2 (Output Y2)
8. Y3 (Output Y3)

9. VCC (Positive Power Supply)

10. NC (No Connection)

11. B0 (Input B0)
12. B1 (Input B1)
13. GND (Ground)
14. Y4 (Output Y4)
15. Y5 (Output Y5)
16. Y6 (Output Y6)

Functional Features

• Dual 2-to-4 line decoder/demultiplexer
• Decodes one of two binary inputs (A0 and A1)
• Selects the appropriate output based on the input combination
• Enable input (E) controls the operation of the decoder/demultiplexer

Advantages and Disadvantages

Advantages: - High-speed CMOS technology allows for fast operation - Low power consumption makes it suitable for battery-powered devices - Wide operating voltage range provides flexibility in different applications - Schmitt-trigger inputs ensure noise immunity, improving reliability

Disadvantages: - Limited to dual 2-to-4 line decoding/demultiplexing functionality - Not suitable for applications requiring more complex decoding schemes

Working Principles

The SN74AHC139RGYR operates by decoding one of two binary inputs (A0 and A1) and selecting the corresponding output based on the input combination. The enable input (E) controls the operation of the decoder/demultiplexer. When E is high, the outputs are enabled, and the selected output is determined by the binary inputs. When E is low, all outputs are disabled.

Detailed Application Field Plans

The SN74AHC139RGYR can be used in various applications, including but not limited to:

1. Address decoding in microcontrollers and microprocessors
2. Data routing in multiplexers
3. Memory selection in memory systems
4. Signal demultiplexing in communication systems
5. Control signal generation in digital circuits

Detailed and Complete Alternative Models

1. SN74AHC138RGYR: Similar to SN74AHC139RGYR, but with a single 3-to-8 line decoder/demultiplexer functionality.
2. CD74HC139E: A comparable IC from a different manufacturer, offering dual 2-to-4 line decoding/demultiplexing.

These alternative models can be considered based on specific application requirements and availability.

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