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SN74AHCT123AN
Product Overview
- Category: Integrated Circuit (IC)
- Use: Multivibrator
- Characteristics: High-speed, low-power, monostable multivibrator
- Package: DIP-16 (Dual In-line Package with 16 pins)
- Essence: Monostable multivibrator with retriggerable/resettable capability
- Packaging/Quantity: Available in tubes of 25 or reels of 2,000 units
Specifications
- Supply Voltage Range: 4.5V to 5.5V
- Input Voltage Range: 0V to VCC
- Operating Temperature Range: -40°C to +85°C
- Propagation Delay Time: 8 ns (typical)
- Output Current: ±8 mA
- Output Voltage Level: High: VCC - 0.5V, Low: 0.5V
Detailed Pin Configuration
The SN74AHCT123AN has a total of 16 pins arranged as follows:
___________
| |
1 | CLR | 16 VCC
2 | A | 15 B
3 | RC | 14 Q
4 | RE | 13 Q'
5 | CEXT | 12 GND
6 | REXT | 11 NC
7 | DIS | 10 NC
8 | TRIG | 9 NC
|___________|
Functional Features
- Retriggerable/Resettable Monostable Multivibrator
- Active-High and Active-Low Inputs (A and B)
- Clear Input (CLR) for immediate reset
- Retrigger Input (RE) to extend the output pulse width
- Output (Q and Q') remain stable during triggering
Advantages and Disadvantages
Advantages: - High-speed operation - Low power consumption - Retriggerable capability allows for extended pulse generation - Stable output during triggering
Disadvantages: - Limited supply voltage range (4.5V to 5.5V) - Propagation delay time may vary depending on operating conditions
Working Principles
The SN74AHCT123AN is a monostable multivibrator that generates a single output pulse of a fixed duration when triggered. The triggering can be done using either the Active-High input (A) or the Active-Low input (B). The output pulse width can be extended by applying a retrigger signal to the Retrigger input (RE). The Clear input (CLR) allows for immediate reset of the multivibrator.
Detailed Application Field Plans
The SN74AHCT123AN finds applications in various fields, including:
- Timing circuits
- Pulse generation
- Frequency division
- Delay circuits
- Control systems
- Communication systems
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to the SN74AHCT123AN are:
- CD74HC123E
- MC74HC123AN
- 74HCT123N
- HEF4528BP
These alternatives can be considered based on specific requirements and availability.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de SN74AHCT123AN en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of SN74AHCT123AN:
Q: What is SN74AHCT123AN? A: SN74AHCT123AN is a dual retriggerable monostable multivibrator (also known as a "one-shot") integrated circuit.
Q: What is the purpose of SN74AHCT123AN? A: SN74AHCT123AN is used to generate precise time delays or pulses in various electronic circuits.
Q: What is the operating voltage range for SN74AHCT123AN? A: The operating voltage range for SN74AHCT123AN is typically between 4.5V and 5.5V.
Q: How does SN74AHCT123AN work? A: SN74AHCT123AN works by triggering the output to a high state for a specific duration when an input signal transitions from low to high.
Q: What is the maximum output current of SN74AHCT123AN? A: The maximum output current of SN74AHCT123AN is typically around 8mA.
Q: Can SN74AHCT123AN be used in both astable and monostable modes? A: No, SN74AHCT123AN is specifically designed for monostable operation.
Q: What is the typical propagation delay of SN74AHCT123AN? A: The typical propagation delay of SN74AHCT123AN is around 12ns.
Q: Can SN74AHCT123AN be used in high-frequency applications? A: Yes, SN74AHCT123AN can be used in moderate-speed applications, but it may not be suitable for very high-frequency applications.
Q: What is the recommended operating temperature range for SN74AHCT123AN? A: The recommended operating temperature range for SN74AHCT123AN is typically between -40°C and 85°C.
Q: Are there any specific precautions to consider when using SN74AHCT123AN? A: It is important to ensure that the power supply voltage does not exceed the specified maximum limit, and proper decoupling capacitors should be used to minimize noise and voltage spikes.
Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for SN74AHCT123AN.