SN74AHC123AMDREP

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator
• Characteristics: High-speed, Advanced CMOS technology
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Dual retriggerable monostable multivibrator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 6 ns
• Trigger Pulse Width Range: 23 ns to 1000 ns
• Output Drive Capability: ±24 mA
• Input Capacitance: 3.5 pF
• Power Dissipation: 4 mW

Detailed Pin Configuration

The SN74AHC123AMDREP has a total of 16 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW clear input
2. A - First trigger input
3. B - Second trigger input
4. RCext (External resistor-capacitor timing components)
5. GND (Ground)
6. Q - Output
7. Q̅ - Complementary output
8. VCC (Positive power supply)

9-16. Pins for power supply and ground connections

Functional Features

• Retriggerable operation
• Monostable multivibrator with two independent trigger inputs
• Wide range of trigger pulse width selection
• Output pulse duration determined by external resistor and capacitor
• Schmitt-trigger inputs for noise immunity
• Low power consumption
• High-speed operation

Advantages and Disadvantages

Advantages: - Retriggerable operation allows for flexibility in timing applications - Wide range of trigger pulse width selection enables versatile functionality - Schmitt-trigger inputs provide noise immunity - High-speed operation ensures quick response times

Disadvantages: - Limited to a supply voltage range of 2 V to 5.5 V - Operating temperature range may not be suitable for extreme environments - Input capacitance may affect circuit design in high-frequency applications

Working Principles

The SN74AHC123AMDREP is a dual retriggerable monostable multivibrator. It operates by triggering the device with an input pulse, which starts a timing cycle. The output remains high for a duration determined by the external resistor and capacitor connected to the RCext pin. During this time, if another trigger pulse is received, the output pulse width is extended. The device can be cleared using the CLR input.

Detailed Application Field Plans

The SN74AHC123AMDREP finds applications in various fields, including:

1. Timing circuits: Used to generate precise time delays in applications such as clocks, timers, and frequency dividers.
2. Pulse shaping: Utilized to convert irregular input pulses into well-defined output pulses.
3. Control systems: Employed in control circuits to synchronize operations and provide accurate timing signals.
4. Communication systems: Integrated into communication circuits for signal synchronization and timing purposes.
5. Industrial automation: Incorporated in automation systems to control timing sequences and ensure proper coordination.

Detailed and Complete Alternative Models

1. CD74HC123E - Dual retriggerable monostable multivibrator with similar specifications and package type (PDIP).
2. MC74VHC123ADR2G - Dual retriggerable monostable multivibrator with higher operating temperature range (-55°C to +125°C) and smaller package size (SOIC-16).
3. SN74LVC123ADGVR - Dual retriggerable monostable multivibrator with lower power dissipation (2.5 mW) and wider supply voltage range (1.65 V to 5.5 V).

(Note: These alternative models are provided for reference and may have slight differences in specifications and features.)

In conclusion, the SN74AHC123AMDREP is a high-speed, dual retriggerable monostable multivibrator integrated circuit. It offers flexibility in timing applications, noise immunity, and a wide range of trigger pulse width selection. While it has limitations in supply voltage range and operating temperature, it finds applications in various fields such as timing circuits, pulse shaping, control systems, communication systems, and industrial automation. Alternative models with similar functionality are also available.