Overview
The 74HCT123D/AUJ is a dual retriggerable monostable multivibrator with reset, manufactured by NXP USA Inc. This integrated circuit is part of the 74HCT family and is designed to provide a stable and reliable pulse generation in various electronic circuits. It features a wide supply voltage range, low power dissipation, and high noise immunity, making it suitable for a broad range of applications.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| VCC (V) | 4.5 - 5.5 | Supply voltage range |
| Logic switching levels | TTL | Logic level compatibility |
| Output drive capability (mA) | ± 4 | Maximum output current |
| tpd (ns) | 26 | Propagation delay time |
| Power dissipation considerations | Low power dissipation | CMOS low power characteristics |
| Tamb (°C) | -40 to +125 | Operating temperature range |
| Package | SO16 (SOT109-1) | Package type and dimensions |
Key Features
- Wide Supply Voltage Range: Operates from 2.0 V to 6.0 V, providing flexibility in various power supply environments.
- CMOS Low Power Dissipation: Low power consumption, making it energy-efficient.
- High Noise Immunity: Schmitt-trigger action on inputs enhances noise tolerance.
- Retriggerable: Allows for the extension of the output pulse period by retriggering the inputs.
- Direct Reset: Output pulse can be terminated at any time by a LOW-going edge on the reset input.
- ESD Protection: Human Body Model (HBM) exceeds 2000 V and Charged Device Model (CDM) exceeds 1000 V.
- Multiple Package Options: Available in various packages, including SO16 (SOT109-1).
Applications
The 74HCT123D/AUJ is widely used in various electronic systems due to its versatility and reliability. Some common applications include:
- Microprocessors and Computers: For generating timing signals and managing data transfer.
- Computer Networks: In network devices for timing and synchronization purposes.
- Frequency Counters and Digital Signal Processors: For precise timing and signal processing tasks.
- Automotive and Industrial Control Systems: Where robust and reliable timing signals are essential.
Q & A
- What is the supply voltage range of the 74HCT123D/AUJ?
The supply voltage range is from 2.0 V to 6.0 V, with a specified range of 4.5 V to 5.5 V for optimal performance.
- What are the logic switching levels of the 74HCT123D/AUJ?
The logic switching levels are TTL (Transistor-Transistor Logic) compatible.
- What is the propagation delay time of the 74HCT123D/AUJ?
The propagation delay time (tpd) is approximately 26 ns.
- How does the 74HCT123D/AUJ handle noise immunity?
The 74HCT123D/AUJ features Schmitt-trigger action on its inputs, which enhances noise immunity and makes the circuit highly tolerant to slower input rise and fall times.
- Can the output pulse of the 74HCT123D/AUJ be extended or terminated?
Yes, the output pulse can be extended by retriggering the inputs, and it can be terminated at any time by a LOW-going edge on the reset input.
- What is the operating temperature range of the 74HCT123D/AUJ?
The operating temperature range is from -40 °C to +125 °C.
- What type of package is the 74HCT123D/AUJ available in?
The 74HCT123D/AUJ is available in the SO16 (SOT109-1) package).
- Does the 74HCT123D/AUJ have ESD protection?
Yes, it has ESD protection with HBM exceeding 2000 V and CDM exceeding 1000 V).
- Is the 74HCT123D/AUJ RoHS compliant?
Yes, the 74HCT123D/AUJ is RoHS compliant and lead-free).
- Where can I find detailed datasheets and documentation for the 74HCT123D/AUJ?
Detailed datasheets and documentation can be found on the official Nexperia website, as well as on distributor websites like Mouser and Digi-Key).
