Overview
The 74HC123D/AU118, produced by NXP USA Inc. (now Nexperia), is a dual retriggerable monostable multivibrator with reset. This component is part of the 74HC series, known for its CMOS low power dissipation and high noise immunity. It is widely used in various electronic circuits where precise timing and pulse generation are required.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2.0 | 5.0 | 6.0 | V |
| VI Input Voltage | 0 | - | VCC | V |
| VO Output Voltage | 0 | - | VCC | V |
| IO Output Current | - | - | ±5.2 | mA |
| tpd Propagation Delay | - | 26 | - | ns |
| Tamb Ambient Temperature | -40 | - | 125 | °C |
| Package | - | - | SO16 (SOT109-1) | - |
Key Features
- Retriggerable Monostable Multivibrator: The 74HC123D allows for the extension of the output pulse width by retriggering the edge-triggered inputs.
- Direct Reset: The output pulse can be terminated at any time by a LOW-going edge on the reset input.
- Schmitt-Trigger Action: Inputs nA and nB have Schmitt-trigger action, providing high tolerance to slower input rise and fall times.
- Wide Supply Voltage Range: Operates from 2.0 V to 6.0 V.
- Low Power Dissipation: CMOS technology ensures low power consumption.
- High Noise Immunity: Complies with JEDEC standards and has high noise immunity.
- ESD Protection: HBM (Human Body Model) exceeds 2000 V and CDM (Charged Device Model) exceeds 1000 V.
- Multiple Package Options: Available in SO16, TSSOP16, and DHVQFN16 packages.
Applications
- Pulse Generation: Used in circuits requiring precise timing and pulse generation.
- Timing Circuits: Suitable for applications needing retriggerable monostable multivibrators.
- Resettable Timers: Ideal for systems that require the ability to reset the timer at any point.
- Noise-Tolerant Systems: Beneficial in environments with high noise levels due to its Schmitt-trigger inputs.
- Low Power Systems: Appropriate for battery-powered devices or other low power applications.
Q & A
- What is the 74HC123D/AU118 used for?
The 74HC123D/AU118 is a dual retriggerable monostable multivibrator with reset, used for generating precise timing pulses and in circuits requiring retriggerable timing.
- What is the supply voltage range of the 74HC123D/AU118?
The supply voltage range is from 2.0 V to 6.0 V.
- What type of input levels does the 74HC123D/AU118 support?
The 74HC123D supports CMOS input levels.
- How can the output pulse width be extended in the 74HC123D/AU118?
The output pulse width can be extended by retriggering the edge-triggered inputs.
- What is the maximum output current of the 74HC123D/AU118?
The maximum output current is ±5.2 mA.
- What is the propagation delay of the 74HC123D/AU118?
The propagation delay is typically 26 ns.
- What type of ESD protection does the 74HC123D/AU118 have?
The component has HBM (Human Body Model) exceeding 2000 V and CDM (Charged Device Model) exceeding 1000 V.
- What are the operating temperature ranges for the 74HC123D/AU118?
The component operates from -40 °C to +125 °C.
- What package options are available for the 74HC123D/AU118?
It is available in SO16, TSSOP16, and DHVQFN16 packages.
- Is the 74HC123D/AU118 RoHS compliant?
Yes, the 74HC123D/AU118 is RoHS compliant.
