CD74HC139ME4

Product Overview

• Category: Integrated Circuit
• Use: Decoder/Demultiplexer
• Characteristics:
  • High-speed CMOS logic
  • Dual 2-to-4 line decoder/demultiplexer
  • Wide operating voltage range: 2V to 6V
  • Low power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: CD74HC139ME4 is a versatile integrated circuit that can decode or demultiplex two separate input lines into four output lines.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 15ns (typical)
• Maximum Quiescent Current: 4μA
• Maximum Output Current: ±25mA

Detailed Pin Configuration

The CD74HC139ME4 has a total of 16 pins, which are assigned as follows:

1. A0: Address Input 0
2. A1: Address Input 1
3. E1: Enable Input 1
4. Y0: Output 0
5. Y1: Output 1
6. GND: Ground
7. Y2: Output 2
8. Y3: Output 3
9. E2: Enable Input 2
10. A2: Address Input 2
11. A3: Address Input 3
12. VCC: Positive Power Supply
13. NC: No Connection
14. NC: No Connection
15. NC: No Connection
16. NC: No Connection

Functional Features

• Dual 2-to-4 Line Decoder/Demultiplexer: CD74HC139ME4 can decode two separate input lines (A0 and A1) into four output lines (Y0, Y1, Y2, and Y3).
• High-Speed CMOS Logic: Provides fast decoding and demultiplexing operations.
• Wide Operating Voltage Range: Can operate within a voltage range of 2V to 6V, making it compatible with various power supply systems.
• Low Power Consumption: Consumes minimal power, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - High-speed operation - Versatile decoder/demultiplexer functionality - Wide operating voltage range - Low power consumption

Disadvantages: - Limited number of input and output lines - Not suitable for complex decoding applications

Working Principles

The CD74HC139ME4 operates based on the principles of digital logic. It uses the input address lines (A0, A1, A2, and A3) to select one of the four output lines (Y0, Y1, Y2, or Y3). The enable inputs (E1 and E2) control the activation of the decoder/demultiplexer. When the enable inputs are active, the selected output line reflects the corresponding input address.

Detailed Application Field Plans

CD74HC139ME4 finds applications in various fields, including:

1. Address Decoding: Used in microcontrollers and memory systems to decode specific addresses and enable corresponding functions.
2. Data Demultiplexing: Enables the selection of specific data streams from multiplexed signals in communication systems.
3. Signal Routing: Used in digital circuit designs to route signals based on specific address patterns.
4. Control Systems: Employed in control units to decode control signals and activate specific functions.

Detailed and Complete Alternative Models

1. 74HC139: Similar functionality, but operates at a wider voltage range (2V to 10V).
2. CD74HCT139E: Compatible with TTL logic levels and operates at a wider temperature range (-55°C to +125°C).
3. SN74LS139: Operates at a lower voltage range (4.75V to 5.25V) and provides Schottky-clamped inputs for improved noise immunity.

Note: This is not an exhaustive list, and there are several other alternative models available in the market.

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