CD74HC221PWRE4

Product Overview

• Category: Integrated Circuit
• Use: Digital Logic Gate
• Characteristics: High-Speed CMOS, Dual Monostable Multivibrator
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Monostable Multivibrator IC
• 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: 13ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC221PWRE4 has a total of 16 pins arranged as follows:

1. CLR (Clear) - Clear input pin
2. A (Input A) - First input pin
3. B (Input B) - Second input pin
4. RC (Reset Control) - Reset control input pin
5. Q (Output Q) - Output pin
6. Q̅ (Complementary Output Q̅) - Complementary output pin
7. GND (Ground) - Ground pin
8. VCC (Supply Voltage) - Supply voltage pin
9. NC (No Connection) - No connection pin
10. NC (No Connection) - No connection pin
11. NC (No Connection) - No connection pin
12. NC (No Connection) - No connection pin
13. NC (No Connection) - No connection pin
14. NC (No Connection) - No connection pin
15. NC (No Connection) - No connection pin
16. NC (No Connection) - No connection pin

Functional Features

The CD74HC221PWRE4 is a dual monostable multivibrator IC. It is designed to generate accurate and stable time delays in digital circuits. The device features a clear input (CLR) for resetting the output, two inputs (A and B) for triggering the multivibrator, and a reset control (RC) input for overriding the timing operation.

Advantages and Disadvantages

Advantages: - Accurate and stable time delay generation - Dual monostable multivibrator functionality - High-speed CMOS technology - Wide operating voltage range - Small package size

Disadvantages: - Limited number of available pins for other functionalities - Not suitable for applications requiring complex timing sequences

Working Principles

The CD74HC221PWRE4 operates based on the principles of monostable multivibrators. When triggered by the inputs A and B, the device generates a pulse with a predetermined width and duration. The timing of the pulse can be adjusted using external components. The output remains in the stable state until the next trigger signal is received or the clear input (CLR) is activated.

Detailed Application Field Plans

The CD74HC221PWRE4 finds applications in various fields where accurate time delay generation is required. Some of the potential application areas include:

1. Timing circuits in microcontrollers and microprocessors
2. Pulse-width modulation (PWM) control systems
3. Communication systems for synchronization purposes
4. Industrial automation and control systems
5. Robotics and motion control systems
6. Automotive electronics for timing critical operations

Detailed and Complete Alternative Models

1. CD74HC123E - Dual Retriggerable Monostable Multivibrator
2. CD74HC221M - Dual Monostable Multivibrator with Schmitt-Trigger Inputs
3. CD74HC221NSR - Dual Monostable Multivibrator with Clear and Schmitt-Trigger Inputs
4. CD74HC221PWRG4 - Dual Monostable Multivibrator with Schmitt-Trigger Inputs

These alternative models offer similar functionality to the CD74HC221PWRE4 and can be considered as alternatives based on specific requirements.

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