CD74AC138M96G4

Product Overview

• Category: Integrated Circuit
• Use: Decoder/Demultiplexer
• Characteristics: High-speed, low-power, 3-to-8 line decoder/demultiplexer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Decodes a three-bit binary input to one of eight outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 125 MHz
• Propagation Delay Time: 5 ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74AC138M96G4 has the following pin configuration:

1. GND (Ground)
2. A0 (Input A0)
3. A1 (Input A1)
4. A2 (Input A2)
5. E1 (Enable Input 1)
6. E2 (Enable Input 2)
7. Y0 (Output Y0)
8. Y1 (Output Y1)
9. Y2 (Output Y2)
10. Y3 (Output Y3)
11. Y4 (Output Y4)
12. Y5 (Output Y5)
13. Y6 (Output Y6)
14. Y7 (Output Y7)
15. VCC (Supply Voltage)

Functional Features

• Decodes a three-bit binary input to one of eight outputs
• Enables individual output lines using enable inputs (E1 and E2)
• High-speed operation with minimal power consumption
• TTL-compatible inputs for easy interfacing with other logic circuits
• Schmitt-trigger inputs for noise immunity

Advantages

• High-speed operation allows for efficient data decoding
• Low-power consumption helps in reducing overall system power requirements
• Wide supply voltage range provides flexibility in various applications
• Schmitt-trigger inputs ensure reliable operation even in noisy environments
• Compact SOIC package saves board space and facilitates easy integration

Disadvantages

• Limited to 3-to-8 line decoding, may not be suitable for more complex applications
• Propagation delay time of 5 ns may introduce timing constraints in certain high-speed systems

Working Principles

The CD74AC138M96G4 is a decoder/demultiplexer integrated circuit that takes a three-bit binary input and activates one of the eight output lines based on the input combination. The enable inputs (E1 and E2) control the activation of the output lines. When both enable inputs are low, all output lines are disabled.

Detailed Application Field Plans

The CD74AC138M96G4 can be used in various applications, including:

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

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD74AC138M96G4 include:

1. SN74LS138N: 3-to-8 line decoder/demultiplexer with TTL-compatible inputs
2. CD4514BE: 4-to-16 line decoder/demultiplexer with latch enable inputs
3. 74HC238: 3-to-8 line decoder/demultiplexer with active-low outputs
4. CD4028BE: BCD-to-decimal decoder with 10 outputs

These alternative models provide options with different features and specifications to suit specific application requirements.

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