SN74HCT139DBR

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
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 25 MHz
• Propagation Delay Time: 15 ns
• Low Power Consumption: 4µA (typical)

Detailed Pin Configuration

The SN74HCT139DBR has a total of 16 pins. The pin configuration is as follows:

1. A0 - Input A0
2. A1 - Input A1
3. GND - Ground
4. A2 - Input A2
5. E1 - Enable Input 1
6. Y0 - Output Y0
7. Y1 - Output Y1
8. Y2 - Output Y2
9. Y3 - Output Y3
10. E2 - Enable Input 2
11. VCC - Positive Supply Voltage
12. B0 - Input B0
13. B1 - Input B1
14. GND - Ground
15. B2 - Input B2
16. VCC - Positive Supply Voltage

Functional Features

The SN74HCT139DBR is a dual 2-to-4 line decoder/demultiplexer IC. It is designed to convert binary information from two input lines (A0-A2 and B0-B2) into four output lines (Y0-Y3). The enable inputs (E1 and E2) control the operation of the decoder/demultiplexer. When both enable inputs are high, the outputs are in a high-impedance state.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - Compact SSOP-16 package

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

Working Principles

The SN74HCT139DBR operates based on CMOS technology. The inputs A0-A2 and B0-B2 represent the binary information to be decoded. The enable inputs E1 and E2 control the operation of the decoder/demultiplexer. When the enable inputs are active, the selected output line(s) will reflect the binary input combination.

Detailed Application Field Plans

The SN74HCT139DBR can be used in various applications, including but not limited to: - Address decoding in microcontrollers and microprocessors - Data routing in multiplexing systems - Memory address decoding - Signal demultiplexing

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the SN74HCT139DBR are: - 74HC139: Similar functionality, different package options - CD74HC139: High-speed CMOS version - 74LS139: TTL version with similar functionality

These alternative models offer similar decoding capabilities and can be chosen based on specific requirements and availability.

Word count: 314 words