SN74S139ANSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: Dual 2-to-4 Line Decoder/Demultiplexer, TTL Logic Level
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: High-speed CMOS technology combined with Schottky diode clamping to achieve high performance and low power consumption.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 8ns (typical)
• Output Current: ±6mA
• Power Dissipation: 500mW (max)

Detailed Pin Configuration

The SN74S139ANSR has a total of 16 pins, which are assigned as follows:

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

Functional Features

The SN74S139ANSR is a dual 2-to-4 line decoder/demultiplexer IC. It is designed to convert two binary inputs (A0 and A1) into four mutually exclusive outputs (Y0 to 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 due to CMOS technology - Low power consumption - Small package size for space-constrained applications - Wide operating temperature range

Disadvantages: - Limited number of input combinations - Not suitable for complex decoding applications

Working Principles

The SN74S139ANSR utilizes CMOS technology combined with Schottky diode clamping to achieve high performance and low power consumption. The inputs are decoded to select one of the four outputs based on the binary input combination. The enable inputs control the output state, allowing for flexibility in the decoding process.

Detailed Application Field Plans

The SN74S139ANSR can be used in various applications, including but not limited to: - Address decoding in microprocessors and microcontrollers - Data routing and selection in digital systems - Memory address decoding in memory modules - Signal demultiplexing in communication systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74S139ANSR include: - 74HC139: Dual 2-to-4 Line Decoder/Demultiplexer, CMOS Logic Level - CD74HC139: High-Speed CMOS Logic Dual 2-to-4 Line Decoder/Demultiplexer - SN54LS139: Dual 2-to-4 Line Decoder/Demultiplexer, TTL Logic Level

These alternative models provide options for different logic levels and speed requirements, allowing users to choose the most suitable option for their specific application.

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