CD74HCT139ME4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: High-speed, CMOS logic, dual 2-to-4 line decoder/demultiplexer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Decodes binary information and selects one of four outputs based on the input signals.
• Packaging/Quantity: Available in reels of 2500 pieces.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Speed Operation: 25 ns typical propagation delay
• Low Power Consumption: 4µA maximum ICC
• Output Drive Capability: 10 LSTTL loads
• Pin Count: 16 pins

Detailed Pin Configuration

1. GND - Ground
2. A0 - Address Input 0
3. A1 - Address Input 1
4. E1 - Enable Input 1
5. Y0 - Output 0
6. Y1 - Output 1
7. Y2 - Output 2
8. Y3 - Output 3
9. E2 - Enable Input 2
10. B0 - Address Input 0
11. B1 - Address Input 1
12. VCC - Positive Power Supply
13. Y4 - Output 4
14. Y5 - Output 5
15. Y6 - Output 6
16. Y7 - Output 7

Functional Features

• Dual 2-to-4 Line Decoder/Demultiplexer
• Decodes binary address inputs into one of four active-low outputs
• Enables individual output selection through enable inputs
• High-speed operation allows for quick decoding and demultiplexing

Advantages

• High-speed operation ensures efficient data processing
• Low power consumption minimizes energy usage
• Wide supply voltage range allows for versatile applications
• Compact SOIC package saves board space

Disadvantages

• Limited output drive capability may restrict use in certain applications
• Lack of built-in protection features may require additional circuitry for robust operation

Working Principles

The CD74HCT139ME4 is a dual 2-to-4 line decoder/demultiplexer IC. It takes binary address inputs (A0, A1) and selects one of four outputs (Y0-Y3) based on the input signals. The enable inputs (E1, E2) control the individual output selection. When the enable inputs are active low, the corresponding outputs are enabled.

Detailed Application Field Plans

The CD74HCT139ME4 can be used in various applications, including:

1. Address decoding in microcontrollers and microprocessors
2. Memory selection in digital systems
3. Data routing and selection in communication systems
4. Control signal generation in industrial automation
5. Multiplexing and demultiplexing in data transmission

Detailed and Complete Alternative Models

1. SN74LS139: Dual 2-to-4 line decoder/demultiplexer with TTL logic levels
2. CD4017: Decade counter/divider with 10 decoded outputs
3. 74HC138: 3-to-8 line decoder/demultiplexer with CMOS logic

(Note: These alternative models serve similar functions but may have different specifications and pin configurations.)

This entry provides an overview of the CD74HCT139ME4 integrated circuit, including its product details, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.