Texas Instruments
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SN74S139ANSRE4
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SN74S139ANSRE4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoder/Demultiplexer
  • Characteristics: High-speed, low-power consumption
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Decodes binary input signals into multiple output lines
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 2V to 6V
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 10ns (typical)
  • Output Current: ±8mA

Detailed Pin Configuration

The SN74S139ANSRE4 has a total of 16 pins. The pin configuration is as follows:

  1. GND (Ground)
  2. A0 (Input A0)
  3. A1 (Input A1)
  4. E (Enable Input)
  5. Y0 (Output Y0)
  6. Y1 (Output Y1)
  7. Y2 (Output Y2)
  8. Y3 (Output Y3)
  9. VCC (Supply Voltage)
  10. B0 (Input B0)
  11. B1 (Input B1)
  12. F (Output Enable)
  13. Y4 (Output Y4)
  14. Y5 (Output Y5)
  15. Y6 (Output Y6)
  16. Y7 (Output Y7)

Functional Features

The SN74S139ANSRE4 is a dual 2-to-4 line decoder/demultiplexer IC. It takes two binary inputs (A0 and A1) and one enable input (E) to decode the input signals into four mutually exclusive outputs (Y0-Y3). The active-low enable input (E) controls the operation of the decoder. When E is high, the outputs are in a high-impedance state.

Advantages and Disadvantages

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

Disadvantages: - Limited number of output lines - Lack of built-in protection features

Working Principles

The SN74S139ANSRE4 operates based on the principle of combinational logic. The inputs A0 and A1 determine which output line will be active based on the binary code applied. The enable input (E) enables or disables the decoder/demultiplexer functionality. When enabled, the selected output line becomes active, while the remaining outputs remain inactive.

Detailed Application Field Plans

The SN74S139ANSRE4 can be used in various applications, including but not limited to: - Address decoding in microprocessors and microcontrollers - Data routing in digital systems - Memory selection in memory modules - Signal demultiplexing in communication systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74S139ANSRE4 include: - 74HC139: High-speed CMOS version - CD74HC139: High-speed CMOS version with Schmitt-trigger inputs - 74LS139: Low-power Schottky TTL version

These alternative models provide different characteristics and may be suitable for specific application requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SN74S139ANSRE4 i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of SN74S139ANSRE4 in technical solutions:

  1. Q: What is SN74S139ANSRE4? A: SN74S139ANSRE4 is a dual 2-to-4 line decoder/demultiplexer integrated circuit (IC) manufactured by Texas Instruments.

  2. Q: What is the purpose of SN74S139ANSRE4? A: SN74S139ANSRE4 is used to decode binary information from two input lines into four output lines, making it useful for various digital logic applications.

  3. Q: What is the voltage supply range for SN74S139ANSRE4? A: The voltage supply range for SN74S139ANSRE4 is typically between 4.5V and 5.5V.

  4. Q: What is the maximum operating frequency of SN74S139ANSRE4? A: The maximum operating frequency of SN74S139ANSRE4 is typically around 50 MHz.

  5. Q: How many inputs does SN74S139ANSRE4 have? A: SN74S139ANSRE4 has two active-low enable inputs (G1 and G2) and two binary inputs (A and B).

  6. Q: How many outputs does SN74S139ANSRE4 have? A: SN74S139ANSRE4 has four active-low outputs (Y0, Y1, Y2, and Y3).

  7. Q: Can SN74S139ANSRE4 be cascaded to increase the number of decoded outputs? A: Yes, multiple SN74S139ANSRE4 ICs can be cascaded together to increase the number of decoded outputs.

  8. Q: What is the typical propagation delay of SN74S139ANSRE4? A: The typical propagation delay of SN74S139ANSRE4 is around 15 ns.

  9. Q: What is the power consumption of SN74S139ANSRE4? A: The power consumption of SN74S139ANSRE4 varies depending on the operating conditions but is typically low.

  10. Q: What are some common applications of SN74S139ANSRE4? A: SN74S139ANSRE4 can be used in various applications such as address decoding, memory selection, data routing, and multiplexing.

Please note that the answers provided here are general and may vary based on specific datasheet specifications or application requirements.