Nexperia USA Inc.
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
74HC123D,652
詳細を表示 DataSheets

74HC123D,652

Product Overview

Category

The 74HC123D,652 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for various applications such as timing, pulse generation, and synchronization.

Characteristics

  • High-speed operation
  • Wide operating voltage range
  • Low power consumption
  • Schmitt-trigger inputs for noise immunity
  • Monostable multivibrator functionality

Package

The 74HC123D,652 is available in a small outline package (SOIC) with 16 pins.

Essence

The essence of the 74HC123D,652 lies in its ability to generate precise time delays and pulses, making it an essential component in many digital systems.

Packaging/Quantity

The 74HC123D,652 is typically packaged in reels or tubes, with a quantity of 2500 units per reel or 75 units per tube.

Specifications

  • Supply Voltage: 2V to 6V
  • Operating Temperature Range: -40°C to +125°C
  • Output Current: ±4mA
  • Propagation Delay: 22ns (typical)
  • Trigger Pulse Width: 23ns (typical)

Detailed Pin Configuration

  1. GND (Ground)
  2. nA (Negative Edge Trigger Input)
  3. nB (Positive Edge Trigger Input)
  4. nCLR (Clear Input)
  5. nRD (Read Input)
  6. nQ (Output)
  7. Q (Complementary Output)
  8. VCC (Supply Voltage)
  9. nREXT (External Reset Input)
  10. nCEXT (External Clock Enable Input)
  11. nC (Clock Input)
  12. nR (Reset Input)
  13. nD (Data Input)
  14. nQ (Output)
  15. Q (Complementary Output)
  16. GND (Ground)

Functional Features

  • Monostable multivibrator operation
  • Precise time delay generation
  • Pulse width modulation
  • Noise immunity due to Schmitt-trigger inputs
  • Wide operating voltage range for compatibility with various systems

Advantages and Disadvantages

Advantages

  • High-speed operation allows for efficient digital signal processing.
  • Low power consumption makes it suitable for battery-powered devices.
  • Schmitt-trigger inputs provide noise immunity, ensuring reliable operation in noisy environments.

Disadvantages

  • Limited output current may restrict its use in certain high-power applications.
  • The small outline package (SOIC) may require additional measures for heat dissipation in high-temperature environments.

Working Principles

The 74HC123D,652 operates as a monostable multivibrator, generating precise time delays and pulses based on the input signals. It utilizes internal flip-flops and logic gates to achieve this functionality. The timing characteristics are determined by the external components connected to the IC, such as resistors and capacitors.

Detailed Application Field Plans

The 74HC123D,652 finds applications in various fields, including:

  1. Timing circuits in microcontrollers and microprocessors.
  2. Pulse generation for communication protocols.
  3. Synchronization of digital systems.
  4. Delay circuits in audio and video processing.
  5. Control circuits in industrial automation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74HC123D,652 include:

  1. CD74HC123E - Dual retriggerable monostable multivibrator
  2. SN74HC123N - Dual precision monostable multivibrator
  3. MC74HC123AN - Dual retriggerable monostable multivibrator

These alternatives can be considered based on specific requirements and availability.

Word count: 511

技術ソリューションにおける 74HC123D,652 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 74HC123D,652 in technical solutions:

  1. Q: What is the 74HC123D,652? A: The 74HC123D,652 is a dual retriggerable monostable multivibrator IC, commonly used in timing applications.

  2. Q: What is the operating voltage range for the 74HC123D,652? A: The operating voltage range for this IC is typically between 2V and 6V.

  3. Q: How many inputs does the 74HC123D,652 have? A: This IC has two inputs, labeled as A and B.

  4. Q: What is the purpose of the retriggerable feature in the 74HC123D,652? A: The retriggerable feature allows the output pulse width to be extended if additional trigger pulses are received during the active period.

  5. Q: Can the 74HC123D,652 be used as a frequency divider? A: Yes, it can be used as a frequency divider by connecting the output to the input through appropriate logic gates.

  6. Q: What is the maximum output current that the 74HC123D,652 can sink or source? A: The maximum output current that this IC can sink or source is typically around 4mA.

  7. Q: How do I calculate the output pulse width of the 74HC123D,652? A: The output pulse width can be calculated using the formula: t = 0.7 * (R1 + R2) * C, where R1 and R2 are the external resistors and C is the external capacitor.

  8. Q: Can the 74HC123D,652 be used in both astable and monostable modes? A: Yes, it can be used in both astable (free-running) and monostable (one-shot) modes, depending on the configuration of the external components.

  9. Q: What is the typical propagation delay of the 74HC123D,652? A: The typical propagation delay for this IC is around 15 ns.

  10. Q: Can I cascade multiple 74HC123D,652 ICs to achieve longer pulse widths? A: Yes, you can cascade multiple ICs by connecting the output of one IC to the input of another, allowing for longer pulse widths to be generated.

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