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74HC238PW,112
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74HC238PW,112

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoder/Demultiplexer
  • Characteristics:
    • High-speed CMOS technology
    • Low power consumption
    • Wide operating voltage range
    • Three-state outputs
  • Package: TSSOP (Thin Shrink Small Outline Package)
  • Essence: 3-to-8 line decoder/demultiplexer
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 2.0V to 6.0V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +125°C
  • Maximum Quiescent Current: 4µA at 5.5V
  • Maximum Propagation Delay: 20ns at 5V
  • Maximum Output Current: ±25mA

Detailed Pin Configuration

The 74HC238PW,112 has a total of 16 pins arranged as follows:

+---+--+---+ A0 --|1 +--+ 16|-- VCC A1 --|2 15|-- Y0 A2 --|3 14|-- Y1 GND --|4 13|-- Y2 Y7 --|5 12|-- Y3 Y6 --|6 11|-- Y4 Y5 --|7 10|-- Y5 /OE --|8 9|-- Y6 +----------+

Functional Features

  • Decodes three binary address inputs (A0, A1, A2) into eight mutually exclusive outputs (Y0-Y7).
  • Enables the selected output based on the input address.
  • Three-state outputs allow multiple devices to be connected in parallel without interference.

Advantages and Disadvantages

Advantages: - High-speed operation suitable for time-critical applications. - Low power consumption makes it energy-efficient. - Wide operating voltage range allows compatibility with various systems. - Three-state outputs facilitate bus sharing and reduce conflicts.

Disadvantages: - Limited number of address inputs restricts the maximum decoding capability. - Not suitable for applications requiring more than eight outputs.

Working Principles

The 74HC238PW,112 is a decoder/demultiplexer IC that converts a binary address into a corresponding output. The three address inputs (A0, A1, A2) determine which output line (Y0-Y7) will be activated. When the enable input (/OE) is low, the outputs are enabled, and the selected output line goes high while all other outputs remain low. When the enable input is high, all outputs are in a high-impedance state.

Detailed Application Field Plans

The 74HC238PW,112 finds applications in various fields, including: 1. Address decoding in microcontrollers and microprocessors. 2. Memory selection in digital systems. 3. Data routing and signal multiplexing in communication systems. 4. Display panel control in consumer electronics. 5. Industrial automation and control systems.

Detailed and Complete Alternative Models

Some alternative models to the 74HC238PW,112 include: - 74LS138: TTL version of the decoder/demultiplexer. - CD74HC238E: DIP package variant of the same IC. - SN74HC238N: PDIP package variant with similar functionality.

These alternatives offer similar decoding capabilities but may differ in terms of package type, voltage range, or speed characteristics.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von 74HC238PW,112 in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of 74HC238PW,112 in technical solutions:

  1. Q: What is the 74HC238PW,112? A: The 74HC238PW,112 is a 3-to-8 line decoder/demultiplexer IC (integrated circuit) commonly used in digital electronics.

  2. Q: What is the purpose of the 74HC238PW,112? A: The purpose of this IC is to convert a binary input into a corresponding active-low output on one of the eight output pins.

  3. Q: How does the 74HC238PW,112 work? A: It works by decoding a 3-bit binary input and activating the corresponding output pin while keeping the other output pins inactive.

  4. Q: What is the maximum operating voltage for the 74HC238PW,112? A: The maximum operating voltage is typically 5.5V.

  5. Q: Can the 74HC238PW,112 be used with both TTL and CMOS logic levels? A: Yes, it is compatible with both TTL and CMOS logic levels.

  6. Q: What is the maximum output current of the 74HC238PW,112? A: The maximum output current is typically 25mA per output pin.

  7. Q: Can the 74HC238PW,112 be cascaded to increase the number of outputs? A: Yes, multiple 74HC238PW,112 ICs can be cascaded together to increase the number of outputs.

  8. Q: Is the 74HC238PW,112 suitable for high-speed applications? A: Yes, it has a typical propagation delay of 13 ns, making it suitable for many high-speed applications.

  9. Q: Can the 74HC238PW,112 be used in both multiplexing and demultiplexing applications? A: Yes, it can be used for both multiplexing (combining multiple inputs into one output) and demultiplexing (splitting one input into multiple outputs).

  10. Q: Are there any specific precautions to consider when using the 74HC238PW,112? A: It is important to ensure that the maximum operating voltage and current limits are not exceeded, and proper decoupling capacitors should be used to minimize noise and voltage spikes.

Please note that the answers provided here are general and may vary depending on the specific datasheet and application requirements of the 74HC238PW,112.