CD74HC123PWRG4

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator and Timer
• Characteristics: High-speed, CMOS logic, dual retriggerable monostable multivibrator
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Reliable timing control for electronic circuits
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Logic Family: HC (High-Speed CMOS)
• Number of Channels: 2
• Propagation Delay Time: 14 ns
• Triggering Options: Positive or Negative Edge Triggered
• Output Type: Complementary Outputs
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC123PWRG4 has a total of 16 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW input for resetting the multivibrator
2. A (Trigger) - Active HIGH or LOW input for triggering the multivibrator
3. B (Trigger) - Active HIGH or LOW input for triggering the multivibrator
4. RCext (External Resistor-Capacitor) - External resistor-capacitor timing components connection
5. VCC (Positive Power Supply)
6. Q (Output) - Complementary output
7. Q̅ (Output) - Complementary output
8. GND (Ground)
9. Q (Output) - Complementary output
10. Q̅ (Output) - Complementary output
11. GND (Ground)
12. Q (Output) - Complementary output
13. Q̅ (Output) - Complementary output
14. GND (Ground)
15. Q (Output) - Complementary output
16. Q̅ (Output) - Complementary output

Functional Features

• Dual retriggerable monostable multivibrator with independent trigger inputs
• Wide supply voltage range allows compatibility with various systems
• High-speed operation for precise timing control
• Complementary outputs provide flexibility in circuit design
• External resistor-capacitor timing components allow customization of timing parameters

Advantages and Disadvantages

Advantages

• Reliable timing control for electronic circuits
• Flexible triggering options for versatile applications
• High-speed operation ensures accurate timing
• Compact TSSOP package for space-constrained designs
• Wide operating temperature range for diverse environments

Disadvantages

• Limited number of channels (2 channels)
• Requires external resistor-capacitor components for timing adjustment

Working Principles

The CD74HC123PWRG4 is a dual retriggerable monostable multivibrator. It generates a pulse of a specific duration when triggered by an input signal. The timing of the pulse is determined by the external resistor-capacitor (RC) components connected to the RCext pin. The multivibrator can be triggered by either a positive or negative edge on the A or B input pins. The CLR pin is used to reset the multivibrator.

Detailed Application Field Plans

The CD74HC123PWRG4 finds applications in various fields, including:

1. Timing circuits in microcontrollers and digital systems
2. Pulse width modulation (PWM) generation
3. Frequency division and counting circuits
4. Delay circuits for synchronization purposes
5. Precision timing in communication systems
6. Control signal generation in industrial automation

Detailed and Complete Alternative Models

1. CD74HC123E - DIP (Dual In-line Package) version of CD74HC123PWRG4
2. CD74HCT123M - SOIC (Small Outline Integrated Circuit) version with Schmitt-trigger inputs
3. SN74HC123N - DIP version from a different manufacturer

These alternative models offer similar functionality and can be used as replacements for the CD74HC123PWRG4 in various applications.

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