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DM74LS123N
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DM74LS123N

Product Overview

Category

The DM74LS123N belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a dual retriggerable monostable multivibrator.

Characteristics

  • Dual retriggerable monostable multivibrator
  • TTL (Transistor-Transistor Logic) compatible
  • Low power consumption
  • Wide operating voltage range

Package

The DM74LS123N is available in a 16-pin DIP (Dual In-line Package).

Essence

The essence of DM74LS123N lies in its ability to generate precise time delays or pulses.

Packaging/Quantity

The DM74LS123N is typically packaged in tubes or reels, with quantities varying based on customer requirements.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • High-Level Output Voltage: 2.7V (min)
  • Low-Level Output Voltage: 0.5V (max)
  • Operating Temperature Range: -55°C to +125°C
  • Propagation Delay Time: 22ns (typical)

Detailed Pin Configuration

The DM74LS123N has 16 pins, each serving a specific function:

  1. CLR (Clear)
  2. A (Input A)
  3. B (Input B)
  4. REXT (External Resistor)
  5. CEXT (External Capacitor)
  6. Q (Output Q)
  7. GND (Ground)
  8. VCC (Supply Voltage)
  9. Q (Output Q)
  10. TRIG (Trigger)
  11. RC (Resistor-Capacitor)
  12. Q (Output Q)
  13. GND (Ground)
  14. VCC (Supply Voltage)
  15. Q (Output Q)
  16. Q (Output Q)

Functional Features

The DM74LS123N offers the following functional features:

  • Retriggerable operation
  • Adjustable pulse width
  • Monostable or astable operation modes
  • Schmitt-trigger input for noise immunity

Advantages and Disadvantages

Advantages

  • Precise time delay generation
  • TTL compatibility ensures easy integration with other digital circuits
  • Low power consumption
  • Wide operating voltage range allows for versatile applications

Disadvantages

  • Limited output current capability
  • Requires external resistors and capacitors for operation

Working Principles

The DM74LS123N operates based on the principles of monostable multivibrator circuits. It generates a single output pulse of a specific duration when triggered by an external signal. The pulse width can be adjusted using external resistors and capacitors.

Detailed Application Field Plans

The DM74LS123N finds applications in various fields, including:

  1. Timing circuits: Used to generate precise time delays in applications such as clocks, timers, and sequential logic circuits.
  2. Communication systems: Employed in data transmission and synchronization circuits.
  3. Industrial automation: Utilized in control systems for timing and synchronization purposes.
  4. Robotics: Integrated into robotic systems for controlling motion sequences and timing events.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the DM74LS123N include:

  1. CD74HC123E: High-speed CMOS dual retriggerable monostable multivibrator.
  2. SN74LS123N: Dual retriggerable monostable multivibrator with Schmitt-trigger inputs.
  3. MC14538B: Dual precision monostable multivibrator with complementary outputs.

These alternatives provide options for different voltage levels, speed requirements, and package types, catering to diverse application needs.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van DM74LS123N in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of DM74LS123N in technical solutions:

  1. Q: What is DM74LS123N? A: DM74LS123N is a dual retriggerable monostable multivibrator IC, commonly used in timing and control applications.

  2. Q: What is the operating voltage range for DM74LS123N? A: The operating voltage range for DM74LS123N is typically between 4.75V and 5.25V.

  3. Q: What is the maximum frequency at which DM74LS123N can operate? A: DM74LS123N can typically operate at a maximum frequency of 33 MHz.

  4. Q: How many inputs does DM74LS123N have? A: DM74LS123N has two inputs - one for triggering and another for retriggering.

  5. Q: What is the output configuration of DM74LS123N? A: DM74LS123N has two independent outputs, each capable of driving TTL loads.

  6. Q: Can DM74LS123N be used as a pulse stretcher? A: Yes, DM74LS123N can be used as a pulse stretcher by adjusting the timing components.

  7. Q: What is the typical propagation delay of DM74LS123N? A: The typical propagation delay of DM74LS123N is around 22 ns.

  8. Q: Can DM74LS123N be used in both positive and negative edge-triggered applications? A: Yes, DM74LS123N can be used in both positive and negative edge-triggered applications.

  9. Q: What is the power dissipation of DM74LS123N? A: The power dissipation of DM74LS123N is typically around 22 mW.

  10. Q: What are some common applications of DM74LS123N? A: DM74LS123N is commonly used in applications such as pulse generation, time delay circuits, frequency division, and precision timing control.

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