SN74LS139ADRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: Dual 2-to-4 Line Decoder/Demultiplexer, Low Power Schottky TTL
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74LS139ADRE4 is a decoder/demultiplexer IC that converts binary information from input lines into output lines based on the selected address.
• Packaging/Quantity: Available in reels of 2500 pieces.

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• High-Level Input Voltage: 2.0V (min)
• Low-Level Input Voltage: 0.8V (max)
• High-Level Output Voltage: 2.7V (min)
• Low-Level Output Voltage: 0.5V (max)
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 15ns (typical)

Detailed Pin Configuration

The SN74LS139ADRE4 has a total of 16 pins, which are assigned as follows:

1. G1A (Gate 1 A)
2. Y0 (Output 0)
3. Y1 (Output 1)
4. G2A (Gate 2 A)
5. Y2 (Output 2)
6. Y3 (Output 3)
7. GND (Ground)
8. VCC (Supply Voltage)
9. E1 (Enable 1)
10. E2 (Enable 2)
11. A0 (Address 0)
12. A1 (Address 1)
13. A2 (Address 2)
14. NC (No Connection)
15. Y4 (Output 4)
16. Y5 (Output 5)

Functional Features

• Dual 2-to-4 Line Decoder/Demultiplexer: The SN74LS139ADRE4 can decode two separate 2-bit binary inputs into four mutually exclusive outputs.
• Low Power Schottky TTL: This IC utilizes low power Schottky transistor-transistor logic technology, providing high-speed operation with low power consumption.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Compact SOIC package - Wide operating temperature range

Disadvantages: - Limited number of output lines (up to 6) - Requires external enable signals for proper functioning

Working Principles

The SN74LS139ADRE4 operates based on the principle of binary decoding. It takes two input address lines (A0 and A1) and two enable lines (E1 and E2). Based on the combination of these inputs, the decoder/demultiplexer selects one of the four output lines (Y0 to Y3) and activates it. The selected output line carries the decoded information corresponding to the input address.

Detailed Application Field Plans

The SN74LS139ADRE4 finds applications in various fields, including:

1. Digital Electronics: Used in digital systems for address decoding and signal routing.
2. Memory Systems: Employed in memory modules to select specific memory locations.
3. Data Communication: Utilized in data communication systems for channel selection and data routing.
4. Industrial Automation: Integrated into control systems for addressing multiple devices and selecting specific operations.

Detailed and Complete Alternative Models

1. SN74LS138: Similar to SN74LS139ADRE4 but with a single enable input and three output lines.
2. CD74HC139E: High-speed CMOS version of the dual 2-to-4 line decoder/demultiplexer.
3. 74HC139N: Another alternative with similar functionality, available in a DIP (Dual Inline Package) format.

These alternative models offer similar decoding and demultiplexing capabilities, but may vary in terms of power consumption, speed, and package type.

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