SN74AHC123APWRG4

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator and Monostable Multivibrator
• Characteristics: High-speed, low-power, and CMOS technology
• 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
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6 ns typical at 5 V
• Output Current: ±8 mA
• Trigger Schmitt Inputs for Noise Immunity
• Power Dissipation: 25 mW
• RoHS Compliant

Detailed Pin Configuration

The SN74AHC123APWRG4 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 supply voltage)
9. NC (No Connection)
10. NC (No Connection)
11. NC (No Connection)
12. NC (No Connection)
13. NC (No Connection)
14. NC (No Connection)
15. NC (No Connection)
16. NC (No Connection)

Functional Features

• Retriggerable operation with external resistor and capacitor
• Wide operating voltage range allows compatibility with various systems
• Schmitt-trigger inputs provide noise immunity
• Low power consumption and high-speed operation
• Output can drive standard TTL or CMOS loads

Advantages and Disadvantages

Advantages: - Retriggerable functionality allows for flexible timing control - Wide operating voltage range enhances compatibility - Schmitt-trigger inputs provide noise immunity - Low power consumption makes it suitable for battery-powered devices - High-speed operation enables quick response times

Disadvantages: - Limited output current may not be suitable for driving heavy loads - TSSOP package may require careful handling during assembly

Working Principles

The SN74AHC123APWRG4 is a dual retriggerable monostable multivibrator. It operates by triggering the device with an external signal applied to either the A or B input. Upon triggering, the output Q goes HIGH for a duration determined by the external resistor and capacitor connected to the RCext pin. The output remains HIGH until the timing period elapses or until a new trigger pulse is received.

Detailed Application Field Plans

The SN74AHC123APWRG4 finds applications in various fields, including:

1. Timing circuits: The retriggerable nature of the device makes it suitable for generating precise time delays in applications such as timers, clocks, and frequency dividers.
2. Pulse shaping: The monostable multivibrator functionality allows for pulse width modulation (PWM) and pulse stretching applications.
3. Control systems: The device can be used in control systems to generate accurate timing signals for synchronization and sequencing purposes.
4. Communication systems: The SN74AHC123APWRG4 can be utilized in communication systems for signal conditioning, synchronization, and data transmission.

Detailed and Complete Alternative Models

1. CD74HC123E - Dual retriggerable monostable multivibrator with similar specifications and pin configuration.
2. MC74VHC123ADR2G - High-speed CMOS dual retriggerable monostable multivibrator with extended temperature range.
3. SN74LVC123APW - Low-voltage CMOS dual retriggerable monostable multivibrator with similar functionality.

These alternative models offer similar features and can be considered as substitutes for the SN74AHC123APWRG4 in various applications.

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