M74HC123B1R

Product Overview

Category

M74HC123B1R 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

M74HC123B1R is available in a standard 16-pin dual in-line package (DIP).

Essence

The essence of M74HC123B1R lies in its ability to provide precise timing control and pulse generation in digital circuits.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +125°C
• Output Current: ±25mA
• Propagation Delay Time: 15ns (typical)
• Trigger Voltage: 0.8V (minimum), 2V (maximum)

Detailed Pin Configuration

M74HC123B1R has a total of 16 pins, which are assigned specific functions as follows:

1. Clear (CLR)
2. A Input
3. B Input
4. Ground (GND)
5. Bypass Capacitor (VCC)
6. RC Timing Resistor (RT)
7. RC Timing Capacitor (CT)
8. Output (Q)
9. Complementary Output (Q̅)
10. Trigger (TR)
11. Reset (RD)
12. Control Voltage (CV)
13. Control Voltage (CV)
14. Control Voltage (CV)
15. Control Voltage (CV)
16. VCC

Functional Features

• Monostable multivibrator operation
• Precise timing control with RC network
• Schmitt trigger inputs for noise immunity
• Clear and reset functionality for synchronization

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient pulse generation
• Wide operating voltage range enables compatibility with various digital systems
• Low power consumption reduces energy requirements
• Schmitt trigger inputs provide excellent noise immunity

Disadvantages

• Limited output current may restrict use in certain applications
• Propagation delay time may affect real-time operations in critical systems

Working Principles

M74HC123B1R operates as a monostable multivibrator, generating a single output pulse of a specific duration when triggered. The timing of the output pulse is determined by an external RC network connected to the RT and CT pins. The Schmitt trigger inputs ensure reliable triggering even in the presence of noise.

Detailed Application Field Plans

M74HC123B1R finds extensive application in various fields, including: 1. Timing circuits in microcontrollers and microprocessors 2. Pulse width modulation (PWM) generators 3. Synchronization circuits in communication systems 4. Delay circuits in digital audio/video processing 5. Control signal generation in industrial automation

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to M74HC123B1R are: 1. CD74HC123E from Texas Instruments 2. SN74HC123N from Texas Instruments 3. 74HC123D from NXP Semiconductors 4. MC74HC123AN from ON Semiconductor

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

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