CD74HC123PWTG4

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator and Monostable Multivibrator
• Characteristics: High-Speed CMOS Logic, Dual Retriggerable Precision Monostable Multivibrator
• Package: TSSOP-16
• Essence: The CD74HC123PWTG4 is a dual retriggerable precision monostable multivibrator that features both positive and negative edge triggering with an output pulse width that is precisely controlled by two external resistors and one capacitor.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Propagation Delay Time: 15 ns (typical)
• Operating Temperature Range: -40°C to +85°C
• Input Current: ±1µA (maximum)
• Output Current: ±5.2mA (maximum)

Detailed Pin Configuration

The CD74HC123PWTG4 has a total of 16 pins arranged as follows:

___________ | | 1 | 16 | VCC 2 | 15 | Q1 3 | 14 | Q2 4 | 13 | CLR 5 | 12 | RCext 6 | 11 | Cext 7 | 10 | Rext 8 | 9 | GND |___________|

Functional Features

• Dual retriggerable precision monostable multivibrator
• Positive and negative edge triggering
• Precise control of output pulse width using external resistors and capacitor
• High-speed CMOS logic

Advantages and Disadvantages

Advantages

• Dual retriggerable design allows for flexible timing control
• Precise output pulse width control for accurate timing applications
• High-speed operation suitable for time-critical applications
• Wide supply voltage range enables compatibility with various systems

Disadvantages

• Limited output current capacity may restrict use in high-power applications
• External resistors and capacitor required for precise timing control, adding complexity to the circuit design

Working Principles

The CD74HC123PWTG4 operates as a dual retriggerable precision monostable multivibrator. It can be triggered by both positive and negative edges of an input signal. The output pulse width is determined by external resistors and a capacitor connected to the RCext and Cext pins. When triggered, the output goes high for a duration determined by the RC time constant. The device can be retriggered during this period, extending the output pulse width.

Detailed Application Field Plans

The CD74HC123PWTG4 finds applications in various fields, including:

1. Timing circuits in digital systems
2. Pulse generation for communication protocols
3. Precision timing in industrial automation
4. Delay circuits in instrumentation and measurement equipment
5. Control signal generation in automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD74HC123PWTG4 include:

1. SN74HC123AN
2. MC74HC123AN
3. 74HCT123N
4. CD74HCT123E
5. HEF4528BP

These alternatives provide options for different package types, voltage ranges, and performance characteristics while serving the same purpose as the CD74HC123PWTG4.

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