Overview
The SN74AHC123APWR is a high-speed integrated circuit (IC) manufactured by Texas Instruments. It is classified as a dual retriggerable monostable multivibrator, designed to generate single output pulses with precise durations in response to input trigger signals. This IC features two independent circuits, enabling dual-channel operation, and is widely used in various electronic applications requiring reliable and precise timing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Package | 16-TSSOP (0.173", 4.40mm Width) | |
| Logic Type | Monostable | |
| Independent Circuits | 2 | |
| Schmitt Trigger Input | Yes | |
| Propagation Delay | 7.5 ns | |
| Output Current (High/Low) | 8 mA / 8 mA | |
| Supply Voltage | 2 V ~ 5.5 V | |
| Operating Temperature | -40°C ~ 85°C | |
| Mounting Type | Surface Mount |
Key Features
- Dual Monostable Multivibrators: The SN74AHC123APWR features two independent monostable multivibrators, allowing for dual-channel operation.
- Schmitt Trigger Input: Each circuit has a Schmitt trigger input, ensuring stable triggering even in noisy environments.
- Retriggerable: The output pulse duration can be extended by retriggering the edge-triggered inputs, allowing for very long pulses up to 100% duty factor.
- Direct Reset: The output pulse can be terminated at any time by a LOW-going edge on the reset input.
- Wide Operating Range: Operates within a supply voltage range of 2 V to 5.5 V and can withstand temperatures from -40°C to 85°C.
- High-Speed Operation: Features a fast propagation delay of 7.5 ns.
- ESD Protection: Exceeds JESD 22 standards for ESD protection.
- Latch-Up Performance: Exceeds 100 mA per JESD 78, Class II.
Applications
The SN74AHC123APWR is commonly used in a variety of electronic applications, including:
- Timing Circuits: For generating precise timing signals.
- Pulse Shaping and Signal Conditioning: To modify and condition signals in digital and analog systems.
- Trigger Generation: For triggering other circuits or devices.
- Industrial Machinery and Automation: Where reliable and precise timing is crucial.
- Communication Devices: For timing and signal processing in communication systems.
Q & A
- What is the primary function of the SN74AHC123APWR?
The primary function is to act as a dual retriggerable monostable multivibrator, generating single output pulses with precise durations in response to input trigger signals.
- What is the package type of the SN74AHC123APWR?
The package type is 16-TSSOP (0.173", 4.40mm Width).
- What is the propagation delay of the SN74AHC123APWR?
The propagation delay is 7.5 ns.
- What is the operating temperature range of the SN74AHC123APWR?
The operating temperature range is -40°C to 85°C.
- Does the SN74AHC123APWR have Schmitt trigger inputs?
Yes, it has Schmitt trigger inputs to ensure stable triggering even in noisy environments.
- Can the output pulse duration be extended in the SN74AHC123APWR?
Yes, the output pulse duration can be extended by retriggering the edge-triggered inputs.
- How can the output pulse be terminated in the SN74AHC123APWR?
The output pulse can be terminated at any time by a LOW-going edge on the reset input.
- What is the supply voltage range of the SN74AHC123APWR?
The supply voltage range is 2 V to 5.5 V.
- Does the SN74AHC123APWR have ESD protection?
Yes, it exceeds JESD 22 standards for ESD protection.
- What are some common applications of the SN74AHC123APWR?
Common applications include timing circuits, pulse shaping, signal conditioning, and trigger generation in various digital and analog systems.
