SN74HC139DBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: High-speed, CMOS technology
• Package: SSOP-16
• Essence: Dual 2-to-4 line decoder/demultiplexer
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Current: -4mA
• Low-Level Output Current: 4mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. A0: Address Input 0
2. A1: Address Input 1
3. E: Enable Input
4. Y0: Output 0
5. Y1: Output 1
6. GND: Ground
7. Y2: Output 2
8. Y3: Output 3
9. VCC: Supply Voltage
10. B0: Address Input 0
11. B1: Address Input 1
12. E: Enable Input
13. Y0: Output 0
14. Y1: Output 1
15. GND: Ground
16. Y2: Output 2
17. Y3: Output 3

Functional Features

• Dual 2-to-4 line decoder/demultiplexer
• High-speed operation
• CMOS technology for low power consumption
• Wide supply voltage range
• Schmitt-trigger inputs for noise immunity
• Balanced propagation delay and transition times

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient decoding/demultiplexing
• CMOS technology ensures low power consumption
• Wide supply voltage range provides flexibility in various applications
• Schmitt-trigger inputs enhance noise immunity

Disadvantages

• Limited number of outputs (4 per decoder)
• May require additional components for complex applications

Working Principles

The SN74HC139DBR is a dual 2-to-4 line decoder/demultiplexer. It takes two address inputs (A0 and A1) and an enable input (E) to decode the input combination and select one of the four outputs (Y0, Y1, Y2, or Y3). The selected output becomes active low when the enable input is high. The IC operates on CMOS technology, providing high-speed operation and low power consumption.

Detailed Application Field Plans

The SN74HC139DBR can be used in various applications, including:

1. Address decoding in microcontrollers and microprocessors
2. Data routing and selection in digital systems
3. Memory addressing in computer systems
4. Signal demultiplexing in communication systems
5. Control logic implementation in industrial automation

Detailed and Complete Alternative Models

1. 74HC139: Similar functionality, but with different package options (DIP, SOIC)
2. CD74HC139: Equivalent functionality from a different manufacturer (Texas Instruments)

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