CD74HC123PWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multivibrator and Timer
• Characteristics: High-speed, CMOS logic, dual retriggerable monostable multivibrator
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The CD74HC123PWR is a high-speed CMOS IC that functions as a dual retriggerable monostable multivibrator. It is commonly used in applications requiring precise timing control.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC
• Number of Channels: 2
• Propagation Delay: 14 ns
• Triggering: Positive or Negative Edge
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC123PWR has a total of 16 pins, which are assigned as follows:

1. CLR1: Clear Input for Channel 1
2. A1: Trigger Input for Channel 1
3. B1: Threshold Input for Channel 1
4. RC1: External Resistor/Capacitor Connection for Channel 1
5. Q1: Output for Channel 1
6. GND: Ground
7. Q2: Output for Channel 2
8. RC2: External Resistor/Capacitor Connection for Channel 2
9. B2: Threshold Input for Channel 2
10. A2: Trigger Input for Channel 2
11. CLR2: Clear Input for Channel 2
12. VCC: Supply Voltage
13. NC: No Connection
14. NC: No Connection
15. NC: No Connection
16. NC: No Connection

Functional Features

• Dual retriggerable monostable multivibrator
• Precise timing control with adjustable pulse width
• Positive or negative edge triggering
• Wide operating voltage range
• High-speed CMOS logic for fast operation
• Low power consumption

Advantages and Disadvantages

Advantages

• Provides precise timing control in various applications
• Dual channels allow for independent timing configurations
• High-speed operation enables quick response times
• Low power consumption helps conserve energy

Disadvantages

• Limited to a maximum supply voltage of 6V
• Propagation delay may affect timing accuracy in certain applications

Working Principles

The CD74HC123PWR operates as a dual retriggerable monostable multivibrator. It generates an output pulse of a specific duration when triggered by an input signal. The pulse width can be adjusted using external resistors and capacitors connected to the RC pins. The device can be triggered on either the positive or negative edge of the input signal, providing flexibility in timing control.

Detailed Application Field Plans

The CD74HC123PWR finds applications in various fields where precise timing control is required. Some examples include:

1. Timing circuits in electronic devices
2. Pulse generation for digital systems
3. Delay circuits in communication systems
4. Control signals in industrial automation
5. Timing control in automotive electronics

Detailed and Complete Alternative Models

1. SN74HC123N: Similar functionality, but in DIP (Dual Inline Package) package
2. MC74HC123AN: Equivalent IC from a different manufacturer
3. CD74HCT123E: Compatible IC with TTL logic levels

These alternative models offer similar features and can be used as substitutes for the CD74HC123PWR depending on specific requirements.

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