CD74HC4538PWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multivibrator and Timer
• Characteristics: High-speed CMOS logic, low power consumption
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Dual Monostable Multivibrator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Current: -4mA
• Low-Level Output Current: 4mA
• Propagation Delay Time: 15ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC4538PWR has a total of 16 pins. The pin configuration is as follows:

1. Pin 1: Control Input A
2. Pin 2: Control Input B
3. Pin 3: Ground (GND)
4. Pin 4: Reset Input (MR)
5. Pin 5: Output Qn
6. Pin 6: Output Qn̅
7. Pin 7: Clock Input (CLK)
8. Pin 8: VCC
9. Pin 9: Output Qn+1
10. Pin 10: Output Qn̅+1
11. Pin 11: Control Voltage (CV)
12. Pin 12: Discharge (DISCH)
13. Pin 13: Threshold (THRES)
14. Pin 14: Trigger (TRIG)
15. Pin 15: Control Input C
16. Pin 16: Control Input D

Functional Features

The CD74HC4538PWR is a dual monostable multivibrator IC. It has the following functional features:

• Dual Monostable Operation: The IC can be configured to operate in two independent monostable modes.
• Wide Supply Voltage Range: It can operate within a supply voltage range of 2V to 6V, making it suitable for various applications.
• High-Speed CMOS Logic: The IC offers high-speed operation with low power consumption, ensuring efficient performance.
• Flexible Control Inputs: The control inputs (A, B, C, D) allow for versatile triggering options and timing control.
• Output Options: The IC provides complementary outputs (Qn and Qn̅) as well as additional outputs (Qn+1 and Qn̅+1) for cascading multiple devices.

Advantages and Disadvantages

Advantages: - Versatile Timing Control: The CD74HC4538PWR offers flexible control inputs, allowing precise timing control in various applications. - High-Speed Operation: With its high-speed CMOS logic, the IC ensures fast and efficient operation. - Low Power Consumption: The IC consumes low power, making it suitable for battery-powered devices.

Disadvantages: - Limited Output Current: The IC has a limited output current capability, which may restrict its use in certain high-current applications. - Sensitivity to Noise: As with any CMOS-based IC, the CD74HC4538PWR may be sensitive to noise and requires proper noise filtering measures.

Working Principles

The CD74HC4538PWR operates based on the principles of a monostable multivibrator. When triggered by a control input signal, the IC generates a pulse of a specific duration determined by external components. The timing characteristics are controlled by the values of resistors and capacitors connected to the THRES and TRIG pins. The output pulse width can be adjusted by varying these external components.

Detailed Application Field Plans

The CD74HC4538PWR finds applications in various fields, including:

1. Timing Circuits: The IC is commonly used in timing circuits where precise control over pulse duration is required, such as in clock generators, frequency dividers, and delay circuits.
2. Pulse Shaping: It can be utilized for pulse shaping applications, where the IC helps generate accurate and well-defined pulses.
3. Sequential Logic: The IC can be employed in sequential logic circuits to control the timing of different operations or events.
4. Industrial Automation: In industrial automation systems, the IC can be used for timing and synchronization purposes, ensuring proper coordination between different processes.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD74HC4538PWR are:

1. MC14538B: Dual Precision Monostable Multivibrator
2. HEF4538BP: Dual Precision Monostable Multivibrator
3. 74HCT4538: Dual Retriggerable Monostable Multivibrator

These alternative models provide comparable features and can be considered as