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74HC390PW,112
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74HC390PW,112

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Counter/Divider
  • Characteristics: High-speed operation, low power consumption
  • Package: TSSOP-16
  • Essence: Dual decade ripple counter with reset
  • Packaging/Quantity: Tape and reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 2.0V to 6.0V
  • Operating Temperature Range: -40°C to +125°C
  • Input Capacitance: 3.5pF
  • Output Current: ±6mA
  • Propagation Delay: 15ns
  • Counting Frequency: 50MHz

Detailed Pin Configuration

The 74HC390PW,112 has a total of 16 pins arranged as follows:

  1. Q0 (Output)
  2. Q1 (Output)
  3. Q2 (Output)
  4. Q3 (Output)
  5. Q4 (Output)
  6. Q5 (Output)
  7. Q6 (Output)
  8. Q7 (Output)
  9. GND (Ground)
  10. MR (Master Reset)
  11. CP (Clock Pulse)
  12. CE (Count Enable)
  13. TC (Terminal Count)
  14. VCC (Supply Voltage)
  15. Q8 (Output)
  16. Q9 (Output)

Functional Features

  • Dual decade ripple counter with asynchronous reset
  • Synchronous counting
  • Divide-by-N frequency division
  • Cascadable for larger counters
  • Low power consumption
  • High-speed operation

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting in various applications. - Low power consumption makes it suitable for battery-powered devices. - Cascadable feature enables the creation of larger counters.

Disadvantages: - Limited counting range due to being a dual decade counter. - Asynchronous reset may introduce glitches in certain applications.

Working Principles

The 74HC390PW,112 is a dual decade ripple counter with asynchronous reset. It counts the number of clock pulses applied to the CP (Clock Pulse) input and provides the count value on the output pins. The counter can be reset to zero by applying a low logic level to the MR (Master Reset) input. The CE (Count Enable) input allows for synchronous counting when enabled.

Detailed Application Field Plans

The 74HC390PW,112 is commonly used in various applications that require counting or frequency division. Some specific application fields include:

  1. Frequency dividers in communication systems
  2. Digital clocks and timers
  3. Industrial automation and control systems
  4. Electronic gaming devices
  5. Automotive electronics
  6. Test and measurement equipment

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the 74HC390PW,112 are:

  1. CD4017BE: Decade counter/divider with 10 decoded outputs
  2. SN74LS90N: Decade counter/divider with asynchronous clear
  3. CD4020BE: 14-stage binary counter/divider

These alternative models offer different package options, pin configurations, and specifications while serving similar purposes in various applications.

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技術ソリューションにおける 74HC390PW,112 の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of 74HC390PW,112 in technical solutions:

  1. Q: What is the 74HC390PW,112? A: The 74HC390PW,112 is a dual decade ripple counter with reset.

  2. Q: What is the purpose of a ripple counter? A: A ripple counter is used to count events or pulses in digital circuits.

  3. Q: How many counters are there in the 74HC390PW,112? A: The 74HC390PW,112 has two independent counters.

  4. Q: Can I reset the counters in the 74HC390PW,112? A: Yes, the 74HC390PW,112 has a reset pin that can be used to reset both counters.

  5. Q: What is the maximum clock frequency supported by the 74HC390PW,112? A: The 74HC390PW,112 can operate at a maximum clock frequency of 25 MHz.

  6. Q: How do I connect the inputs and outputs of the 74HC390PW,112? A: The inputs and outputs of the 74HC390PW,112 can be connected using standard digital logic connections.

  7. Q: Can I cascade multiple 74HC390PW,112 chips together? A: Yes, you can cascade multiple 74HC390PW,112 chips to increase the counting range.

  8. Q: What is the power supply voltage range for the 74HC390PW,112? A: The 74HC390PW,112 operates with a power supply voltage range of 2 V to 6 V.

  9. Q: Does the 74HC390PW,112 have any built-in glitch protection? A: Yes, the 74HC390PW,112 has built-in glitch protection on the clock inputs.

  10. Q: Can I use the 74HC390PW,112 in both synchronous and asynchronous counting modes? A: Yes, the 74HC390PW,112 supports both synchronous and asynchronous counting modes.

Please note that these answers are general and may vary depending on the specific application and requirements.