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74HC238N,652
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74HC238N,652

Product Overview

  • Category: Integrated Circuit
  • Use: Decoding and demultiplexing
  • Characteristics: High speed, low power consumption
  • Package: DIP-16
  • Essence: 3-to-8 line decoder/demultiplexer
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 2V to 6V
  • High-Level Input Voltage: 2V to VCC
  • Low-Level Input Voltage: GND to 0.8V
  • Output Current: 5.2mA
  • Operating Temperature: -40°C to 125°C

Detailed Pin Configuration

  1. A0 (Pin 15)
  2. A1 (Pin 14)
  3. A2 (Pin 13)
  4. E1 (Pin 12)
  5. E2 (Pin 11)
  6. Y0 (Pin 10)
  7. Y1 (Pin 9)
  8. Y2 (Pin 7)
  9. Y3 (Pin 6)
  10. Y4 (Pin 5)
  11. Y5 (Pin 4)
  12. Y6 (Pin 3)
  13. Y7 (Pin 2)
  14. GND (Pin 8)
  15. VCC (Pin 16)

Functional Features

  • Decodes three binary weighted address inputs (A0, A1, A2) to eight mutually exclusive outputs (Y0 to Y7)
  • Active LOW enable inputs (E1, E2) to simplify cascading of decoders

Advantages and Disadvantages

Advantages

  • High speed operation
  • Low power consumption
  • Wide operating voltage range

Disadvantages

  • Limited output current capacity
  • Requires external pull-up resistors for proper operation

Working Principles

The 74HC238N,652 is designed to decode a three-bit binary input into one of eight outputs based on the active LOW enable inputs. It operates by using internal logic gates to interpret the input address and enable signals, directing the appropriate output to a LOW state while keeping the rest HIGH.

Detailed Application Field Plans

  • Address decoding in microprocessor systems
  • Memory selection in digital systems
  • Signal routing in communication equipment

Detailed and Complete Alternative Models

  • 74LS138
  • CD74HC238E
  • SN74HC238N

In conclusion, the 74HC238N,652 is a versatile 3-to-8 line decoder/demultiplexer with a wide range of applications in digital systems and communication equipment. Its high speed, low power consumption, and compact package make it an ideal choice for addressing and signal routing tasks.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi 74HC238N,652 dalam penyelesaian teknikal

  1. What is the 74HC238N,652?

    • The 74HC238N,652 is a 3-to-8 line decoder/demultiplexer IC that can be used in various digital electronic applications.

  2. What are the typical applications of 74HC238N,652?

    • It is commonly used for address decoding, memory selection, and general-purpose demultiplexing in digital systems.

  3. What is the maximum voltage rating for 74HC238N,652?

    • The maximum voltage rating for 74HC238N,652 is typically around 6V to 7V.

  4. What is the maximum current output of 74HC238N,652?

    • The maximum current output per channel is usually around 25mA.

  5. How many input lines does 74HC238N,652 have?

    • It has 3 input lines (A, B, and C) which can be used to select one of the 8 outputs.

  6. Can 74HC238N,652 be cascaded to increase the number of outputs?

    • Yes, multiple 74HC238N,652 ICs can be cascaded to create larger decoder/demultiplexer configurations.

  7. What is the power supply range for 74HC238N,652?

    • The typical power supply range is 2V to 6V, making it suitable for both 3.3V and 5V systems.

  8. Does 74HC238N,652 have built-in protection features?

    • It may have built-in ESD protection on the inputs, but additional external protection may be required depending on the application.

  9. What is the propagation delay of 74HC238N,652?

    • The propagation delay is typically in the range of a few nanoseconds, making it suitable for high-speed applications.

  10. Are there any common pitfalls or issues when using 74HC238N,652?

    • Care should be taken with proper decoupling and signal integrity practices to avoid issues such as crosstalk and noise interference, especially in high-frequency applications.