74AHC123APW,112

Basic Information Overview

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

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 8 ns at 2 V, 6 ns at 4.5 V
• Trigger Pulse Width: 23 ns at 2 V, 7 ns at 4.5 V

Detailed Pin Configuration

The 74AHC123APW,112 IC has a total of 16 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW clear input
2. A - Data input A
3. B - Data input B
4. GND (Ground) - Ground reference voltage
5. RCext (External resistor-capacitor timing components) - External timing components for the monostable operation
6. Q - Output Q
7. Qn - Complementary output Qn
8. VCC (Positive Power Supply) - Positive power supply voltage
9. NC (No Connection) - No connection
10. NC (No Connection) - No connection
11. NC (No Connection) - No connection
12. NC (No Connection) - No connection
13. NC (No Connection) - No connection
14. NC (No Connection) - No connection
15. NC (No Connection) - No connection
16. NC (No Connection) - No connection

Functional Features

• Dual retriggerable monostable multivibrator with independent trigger and reset inputs
• Schmitt-trigger action on all inputs allows slow input transition and better noise immunity
• Monostable operation with a pulse width determined by external timing components
• Retriggerable feature allows extending the output pulse width by applying additional trigger pulses during the monostable period

Advantages and Disadvantages

Advantages: - High-speed operation makes it suitable for time-critical applications - Low power consumption helps in reducing overall power requirements - Retriggerable feature provides flexibility in pulse width control

Disadvantages: - Limited supply voltage range of 2 V to 5.5 V may not be suitable for all applications - Requires external timing components for monostable operation, adding complexity to the circuit design

Working Principles

The 74AHC123APW,112 is a dual retriggerable monostable multivibrator IC. It operates based on the principles of triggering and timing components. When a trigger pulse is applied to the CLR (Clear) input, the Q output goes HIGH for a duration determined by the external timing components connected to RCext pin. During this period, if another trigger pulse is applied, the output pulse width gets extended. The Qn output provides the complementary output.

Detailed Application Field Plans

The 74AHC123APW,112 IC finds applications in various fields, including: 1. Timing circuits: It can be used in applications requiring precise timing control, such as clock generation, pulse-width modulation, and frequency division. 2. Communication systems: It can be utilized in data transmission systems for synchronization purposes. 3. Industrial automation: It can be employed in industrial control systems for generating precise timing signals. 4. Automotive electronics: It can be used in automotive applications that require accurate timing, such as engine control units and sensor interfaces.

Detailed and Complete Alternative Models

Some alternative models to the 74AHC123APW,112 IC include: - 74HC123: Similar functionality but operates at a higher voltage range (2 V to 6 V) - CD74HC123: Equivalent IC from another manufacturer with similar specifications and pin configuration - SN74AHC123A: Another variant with improved noise immunity and lower power consumption

(Note: The above alternative models are provided for reference and may have slight variations in specifications and package options.)

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