Overview
The SN74AHC123APWRE4 is a dual retriggerable monostable multivibrator produced by Texas Instruments. This component is part of the SN74AHC series, known for its high-speed and low-power consumption. It is designed to operate within a voltage range of 2 V to 5.5 V, making it versatile for various electronic applications. The device features balanced outputs and is capable of handling high-speed operations with propagation delays as low as 10-50 ns.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | TSSOP (PW) |
| Number of Pins | 16 |
| Operating Voltage (VCC) | 2 V to 5.5 V |
| Operating Temperature Range | -40°C to 85°C |
| Propagation Delay (tpd) | 10-50 ns |
| External Capacitor Value Range | Up to several hundred nanofarads |
| Minimum Retrigger Time | Approx. 1-4.5 µs (dependent on capacitor value) |
| ESD Protection | 2000-V Human-Body Model (A114-A), 200-V Machine Model (A115-A) |
| Latch-Up Performance | Exceeds 100 mA per JESD 78, Class II |
Key Features
- Retriggerable Monostable Multivibrator: Allows for the extension of the output pulse by retriggering the device.
- Glitch-Free Power-Up Reset on Outputs: Ensures stable output during power-up.
- Overriding Clear: Terminates the output pulse immediately when the clear input is activated.
- High-Speed Operation: Propagation delays as low as 10-50 ns.
- Over-Voltage Tolerant Inputs: Inputs can tolerate voltages higher than VCC.
- ESD Protection: Protects against electrostatic discharge.
- Latch-Up Performance: Exceeds 100 mA per JESD 78, Class II.
Applications
The SN74AHC123APWRE4 is suitable for a variety of applications, including:
- Digital Timing Circuits: Where precise and adjustable timing is required.
- Pulse Generation: For generating pulses of specific durations.
- Signal Processing: In systems that require high-speed signal processing and timing control.
- Military and Defense Applications: Due to its QML certification and extended temperature range.
Q & A
- What is the operating voltage range of the SN74AHC123APWRE4?
The operating voltage range is 2 V to 5.5 V. - What is the propagation delay of the SN74AHC123APWRE4?
The propagation delay is between 10-50 ns. - What is the purpose of the overriding clear feature?
The overriding clear feature terminates the output pulse immediately when the clear input is activated. - Does the SN74AHC123APWRE4 have ESD protection?
Yes, it has ESD protection exceeding 2000-V Human-Body Model (A114-A) and 200-V Machine Model (A115-A). - What is the temperature range for the SN74AHC123APWRE4?
The operating temperature range is -40°C to 85°C. - Is the SN74AHC123APWRE4 suitable for military applications?
Yes, it is QML certified for military and defense applications. - What type of package does the SN74AHC123APWRE4 come in?
The SN74AHC123APWRE4 comes in a TSSOP (Thin Shrink Small Outline Package) with 16 pins. - Can the inputs of the SN74AHC123APWRE4 handle over-voltage conditions?
Yes, the inputs are over-voltage tolerant. - How does the retriggerable feature work?
The retriggerable feature allows the extension of the output pulse by retriggering the device. - What is the minimum retrigger time for the SN74AHC123APWRE4?
The minimum retrigger time is approximately 1-4.5 µs, dependent on the capacitor value.
