Overview
The 74HC221D,653 is a dual non-retriggerable monostable multivibrator produced by NXP USA Inc. This integrated circuit is part of the 74HC series and is designed to provide stable and reliable pulse generation in various electronic systems. Each multivibrator within the IC features edge-triggered inputs, allowing for precise control over the output pulses. The device is particularly useful in applications requiring jitter-free triggering and high noise immunity.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74HC221D,653 |
| Manufacturer | NXP USA Inc. |
| Package | SO16 (Tape & Reel) |
| Supply Voltage Range | 2.0 V to 6.0 V |
| Logic Switching Levels | Cmos |
| Output Drive Capability | ± 5.2 mA |
| Propagation Delay (tpd) | 19 ns (typical) |
| Operating Temperature Range | -40 °C to +125 °C |
| Pulse Width Stability | Virtually independent of VCC and temperature |
Key Features
- Edge-Triggered Inputs: Each multivibrator has edge-triggered inputs (nA and nB), allowing for precise pulse generation.
- Schmitt-Trigger Action: The nB inputs feature Schmitt-trigger action, providing jitter-free triggering and high noise immunity.
- Direct Reset: Output pulses can be terminated by active LOW reset inputs (nRD).
- Pulse Width Stability: The output pulse width is stable and virtually independent of VCC and temperature.
- Low Power Dissipation: The device operates with low power dissipation, making it suitable for energy-efficient designs.
- Latch-Up Performance: Exceeds 100 mA per JESD 78 Class II Level B.
- ESD Protection: HBM (Human Body Model) exceeds 2000 V, and CDM (Charged Device Model) exceeds 1000 V.
Applications
The 74HC221D,653 is versatile and can be used in a variety of applications across different industries, including:
- Automotive Systems: For reliable pulse generation in automotive control systems.
- Industrial Automation: In timing and control circuits for industrial automation.
- Consumer Electronics: For timing and pulse generation in consumer electronic devices.
- Medical Devices: In medical equipment requiring stable and precise timing signals.
- Telecommunications: For timing and control in telecommunications equipment.
Q & A
- What is the primary function of the 74HC221D,653?
The primary function is to act as a dual non-retriggerable monostable multivibrator, generating stable output pulses based on edge-triggered inputs.
- What is the supply voltage range for the 74HC221D,653?
The supply voltage range is from 2.0 V to 6.0 V.
- What type of inputs does the 74HC221D,653 have?
The device has edge-triggered inputs (nA and nB), with Schmitt-trigger action on the nB inputs.
- How can the output pulses be terminated?
The output pulses can be terminated by active LOW reset inputs (nRD).
- What is the typical propagation delay of the 74HC221D,653?
The typical propagation delay is 19 ns.
- What is the operating temperature range of the 74HC221D,653?
The operating temperature range is from -40 °C to +125 °C.
- Does the 74HC221D,653 have ESD protection?
- What package type is the 74HC221D,653 available in?
The device is available in an SO16 package with Tape & Reel option.
- Is the 74HC221D,653 suitable for low power applications?
- What industries can the 74HC221D,653 be used in?
