Toshiba Semiconductor and Storage
Das Bild kann eine Darstellung sein.
Siehe Spezifikationen für Produktdetails.
TC74HC138APF
Im Detail sehen Datenblätter

TC74HC138APF

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoding and demultiplexing
  • Characteristics: High-speed operation, low power consumption
  • Package: 16-pin plastic SOP (Small Outline Package)
  • Essence: 3-to-8 line decoder/demultiplexer
  • Packaging/Quantity: Tape and reel packaging, 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
  • Maximum Propagation Delay Time: 25 ns
  • Maximum Quiescent Current: 4 μA

Detailed Pin Configuration

The TC74HC138APF has a total of 16 pins. The pin configuration is as follows:

  1. GND (Ground)
  2. A0 (Address input bit 0)
  3. A1 (Address input bit 1)
  4. A2 (Address input bit 2)
  5. /G2A (Enable input G2A)
  6. /G2B (Enable input G2B)
  7. /G1 (Enable input G1)
  8. Y0 (Output Y0)
  9. Y1 (Output Y1)
  10. Y2 (Output Y2)
  11. Y3 (Output Y3)
  12. Y4 (Output Y4)
  13. Y5 (Output Y5)
  14. Y6 (Output Y6)
  15. Y7 (Output Y7)
  16. VCC (Positive supply voltage)

Functional Features

The TC74HC138APF is a 3-to-8 line decoder/demultiplexer IC. It takes three address inputs (A0, A1, and A2) and three enable inputs (/G2A, /G2B, and /G1) to generate eight mutually exclusive outputs (Y0 to Y7). The selected output is determined by the combination of address inputs and enable inputs.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick decoding and demultiplexing. - Low power consumption makes it suitable for battery-powered devices. - Compact SOP package saves space on PCBs.

Disadvantages: - Limited number of address inputs restricts the range of applications. - Not suitable for complex decoding tasks requiring more than 8 outputs.

Working Principles

The TC74HC138APF works based on the principle of binary decoding. The three address inputs represent a binary number from 000 to 111. The enable inputs control the operation of the decoder/demultiplexer. When a specific combination of address and enable inputs is applied, the corresponding output is activated.

Detailed Application Field Plans

The TC74HC138APF can be used in various applications, including but not limited to: - Address decoding in microcontrollers and microprocessors - Memory selection in digital systems - Data routing in communication systems - LED matrix control - Multiplexing multiple input signals

Detailed and Complete Alternative Models

Some alternative models to the TC74HC138APF are: - SN74LS138N: Similar 3-to-8 line decoder/demultiplexer IC from Texas Instruments - CD74HC138E: High-speed CMOS logic 3-to-8 line decoder/demultiplexer from Texas Instruments - MC74HC138AN: 3-to-8 line decoder/demultiplexer IC from ON Semiconductor

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

Word count: 345 words

Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von TC74HC138APF in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of TC74HC138APF:

  1. Q: What is TC74HC138APF? A: TC74HC138APF is a 3-to-8 line decoder/demultiplexer integrated circuit (IC) commonly used in digital electronics.

  2. Q: What is the purpose of TC74HC138APF? A: The purpose of TC74HC138APF is to decode binary information from a microcontroller or other digital device into multiple output lines.

  3. Q: How many input lines does TC74HC138APF have? A: TC74HC138APF has three input lines, which can represent up to eight different combinations.

  4. Q: How many output lines does TC74HC138APF have? A: TC74HC138APF has eight output lines, each corresponding to a specific combination of the input lines.

  5. Q: Can TC74HC138APF be used as a demultiplexer? A: Yes, TC74HC138APF can be used as a demultiplexer by connecting the input lines to the select lines and using the output lines as separate channels.

  6. Q: What is the maximum voltage that TC74HC138APF can handle? A: TC74HC138APF can handle a maximum voltage of 5.5 volts.

  7. Q: What is the maximum current that TC74HC138APF can source or sink? A: TC74HC138APF can source or sink a maximum current of 25 milliamperes per output pin.

  8. Q: Can TC74HC138APF be cascaded to increase the number of output lines? A: Yes, TC74HC138APF can be cascaded by connecting the enable input of one IC to the output of another, allowing for more output lines.

  9. Q: What is the power supply voltage range for TC74HC138APF? A: The power supply voltage range for TC74HC138APF is typically between 2 and 6 volts.

  10. Q: Can TC74HC138APF be used in both TTL and CMOS logic systems? A: Yes, TC74HC138APF is compatible with both TTL and CMOS logic systems, making it versatile for various applications.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for TC74HC138APF.