SN74AHCT123APWRG4

Basic Information Overview

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

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Output Current: ±8 mA
• Propagation Delay Time: 9 ns (typical)
• Trigger Pulse Width: 30 ns (minimum)

Detailed Pin Configuration

1. CLR (Clear) - Active LOW clear input
2. A (Trigger) - Active HIGH trigger input
3. B (Retrigger) - Active HIGH retrigger input
4. RCext (External Resistor/Capacitor) - Connected to an external resistor and capacitor for timing control
5. Q (Output) - Non-inverting output
6. GND (Ground) - Ground reference
7. Q (Complementary Output) - Inverting output
8. VCC (Supply Voltage) - Positive supply voltage

Functional Features

• Dual retriggerable monostable multivibrator with Schmitt-trigger inputs
• Can be used as a precision monostable timer or a pulse stretcher
• Provides accurate output pulse width control through external resistor and capacitor
• Retriggerable feature allows extending the output pulse width by applying additional trigger pulses
• Schmitt-trigger inputs ensure noise immunity and hysteresis

Advantages

• High-speed operation enables efficient timing control
• Low-power consumption for energy-efficient applications
• Schmitt-trigger inputs provide robustness against noise and signal distortion
• Retriggerable feature allows flexibility in pulse width adjustment

Disadvantages

• Limited output current may restrict certain high-current applications
• Requires external resistor and capacitor for precise timing control

Working Principles

The SN74AHCT123APWRG4 is a dual retriggerable monostable multivibrator. It generates an output pulse of a specific width when triggered by an input signal. The pulse width is determined by an external resistor and capacitor connected to the RCext pin. The device can be retriggered by applying additional trigger pulses, extending the output pulse width.

Detailed Application Field Plans

1. Precision Timing: The SN74AHCT123APWRG4 can be used in applications that require accurate timing control, such as clock synchronization, data sampling, and frequency generation.
2. Pulse Stretching: It can be employed as a pulse stretcher to elongate short-duration input pulses, ensuring proper signal processing in systems like communication protocols and digital circuits.
3. Delay Generation: The device finds utility in generating precise time delays for various purposes, including synchronization of multiple events, sequencing operations, and controlling signal propagation.

Detailed and Complete Alternative Models

1. CD74HC123E - Dual retriggerable monostable multivibrator with similar specifications and pin configuration.
2. MC14528B - Dual precision retriggerable/resettable monostable multivibrator offering extended temperature range and wider supply voltage range.
3. 74HCT123D - Dual retriggerable monostable multivibrator with Schmitt-trigger inputs, available in a different package (SOIC).

(Note: These alternative models are provided as examples and may not cover all available options.)

This entry provides comprehensive information about the SN74AHCT123APWRG4, including its product details, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.