SN74AHC123APWRE4

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator and Monostable Multivibrator
• Characteristics: High-speed, low-power, dual retriggerable monostable multivibrator
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: A versatile integrated circuit used for timing applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Operating Temperature Range: -40°C to +85°C
• Output Current: ±8 mA
• Propagation Delay: 6 ns (typical)
• Trigger Pulse Width: 30 ns (minimum)

Detailed Pin Configuration

The SN74AHC123APWRE4 has a total of 16 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW clear input
2. A (Trigger) - Trigger input
3. B (Retrigger) - Retrigger input
4. RCext (External Resistor/Capacitor) - External resistor/capacitor connection
5. GND (Ground) - Ground reference
6. Q (Output) - Output
7. VCC (Supply Voltage) - Positive supply voltage
8. NC (No Connection) - No electrical connection

9-16. Same pin configuration as pins 1-8 but labeled with prime (') symbol

Functional Features

• Dual retriggerable monostable multivibrator
• Can be configured as a one-shot or astable multivibrator
• Wide operating voltage range allows compatibility with various systems
• Low power consumption makes it suitable for battery-powered devices
• High-speed operation enables accurate timing applications
• Schmitt-trigger inputs provide hysteresis for noise immunity

Advantages and Disadvantages

Advantages: - Versatile timing solution for various applications - Dual monostable multivibrator functionality - Wide operating voltage range - Low power consumption - High-speed operation - Noise immunity due to Schmitt-trigger inputs

Disadvantages: - Limited output current capacity - Requires external resistor/capacitor for timing control

Working Principles

The SN74AHC123APWRE4 is a dual retriggerable monostable multivibrator. It can be configured as a one-shot or astable multivibrator depending on the application requirements. The device operates by triggering the multivibrator with an input pulse, which then generates an output pulse of a specific duration determined by the external resistor and capacitor connected to the RCext pin. The output pulse width can be adjusted by varying the values of the external components.

Detailed Application Field Plans

The SN74AHC123APWRE4 finds applications in various fields, including:

1. Timing circuits in digital systems
2. Pulse generation for communication protocols
3. Delay circuits in microcontrollers
4. Precision timing in industrial automation
5. Frequency division in clock generation
6. Control signal generation in robotics
7. Timing control in automotive electronics
8. Pulse shaping in audio and video equipment

Detailed and Complete Alternative Models

1. CD74HC123E - High-speed CMOS dual retriggerable monostable multivibrator
2. MC74VHC123ADR2G - Dual retriggerable monostable multivibrator with Schmitt-trigger inputs
3. 74LVC123APW - Low-voltage CMOS dual retriggerable monostable multivibrator
4. SN74LS123N - Dual retriggerable monostable multivibrator with TTL logic levels

These alternative models offer similar functionality and can be used as substitutes for the SN74AHC123APWRE4 in various applications.

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