CD74HC123PWG4

Product Overview

• Category: Integrated Circuit
• Use: Timing and Control
• Characteristics: High-Speed, Dual Retriggerable Monostable Multivibrator
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The CD74HC123PWG4 is a high-speed integrated circuit that functions as a dual retriggerable monostable multivibrator. It is commonly used in timing and control applications.
• Packaging/Quantity: Available in reels with 2500 units per reel.

Specifications

• Supply Voltage: 2V to 6V
• Propagation Delay: 13 ns
• Operating Temperature Range: -40°C to +85°C
• Output Current: ±5.2 mA
• Input Current: ±1 µA
• Trigger Pulse Width: 23 ns to 100% duty cycle
• Trigger Voltage: 0.8V to 2.0V
• Reset Voltage: 0.3V to 0.8V

Pin Configuration

The CD74HC123PWG4 has a total of 16 pins. The pin configuration is as follows:

1. Clear Input (CLR1)
2. Trigger Input (TRIG1)
3. Threshold Input (THRES1)
4. Control Voltage Input (CV1)
5. Ground (GND)
6. Output (OUT1)
7. Discharge (DIS1)
8. VCC
9. Control Voltage Input (CV2)
10. Threshold Input (THRES2)
11. Trigger Input (TRIG2)
12. Clear Input (CLR2)
13. Output (OUT2)
14. Discharge (DIS2)
15. Unused
16. Ground (GND)

Functional Features

• Dual retriggerable monostable multivibrator
• High-speed operation
• Wide operating voltage range
• Low power consumption
• Schmitt-trigger inputs for noise immunity
• Output can drive TTL or CMOS loads
• Monostable pulse width determined by external components

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick response times. - Dual functionality provides flexibility in timing and control applications. - Wide operating voltage range enables compatibility with various systems. - Low power consumption helps conserve energy. - Schmitt-trigger inputs ensure reliable operation even in noisy environments.

Disadvantages: - External components are required to set the monostable pulse width. - Limited pin configuration may restrict certain circuit designs. - Not suitable for applications requiring precise timing accuracy.

Working Principles

The CD74HC123PWG4 operates as a dual retriggerable monostable multivibrator. It generates a single output pulse of a duration determined by external components. The triggering of the multivibrator can be controlled using the trigger inputs (TRIG1 and TRIG2) and cleared using the clear inputs (CLR1 and CLR2). The output pulse width is determined by the values of the threshold inputs (THRES1 and THRES2) and the control voltage inputs (CV1 and CV2).

Detailed Application Field Plans

The CD74HC123PWG4 finds applications in various fields, including:

1. Timing circuits in digital systems
2. Pulse generation for microcontrollers
3. Delay circuits in communication systems
4. Control signal generation in industrial automation
5. Frequency division in clock circuits

Alternative Models

Here are some alternative models that offer similar functionality:

1. SN74HC123N
2. MC74HC123AN
3. 74HCT123D
4. CD74HCT123E
5. HEF4528BP

These models can be considered as alternatives to the CD74HC123PWG4 based on their specifications and pin compatibility.

In conclusion, the CD74HC123PWG4 is a high-speed dual retriggerable monostable multivibrator integrated circuit commonly used in timing and control applications. Its features, advantages, and disadvantages make it suitable for various fields, and there are alternative models available for consideration.