Overview
The 74HCT221D,112 is a dual non-retriggerable monostable multivibrator produced by Nexperia USA Inc. This integrated circuit is part of the 74HCT series and is designed for use in a variety of electronic applications. Each multivibrator in the device features edge-triggered inputs and Schmitt-trigger input circuitry, providing excellent noise immunity and jitter-free triggering. The device operates within a supply voltage range of 4.5V to 5.5V and is suitable for applications requiring stable and reliable pulse generation.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Nexperia USA Inc. |
| Part Number | 74HCT221D,112 |
| Package | SOIC-16 (SOT109-1) |
| Mounting Type | Surface Mount |
| Number of Pins | 16 |
| Operating Temperature | -40°C to 125°C |
| Supply Voltage | 4.5V to 5.5V |
| Propagation Delay | 31 ns |
| Output Current | ±4 mA |
| Logic Type | Monostable |
| Schmitt Trigger Input | Yes |
| Independent Circuits | 2 |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
Key Features
- Dual non-retriggerable monostable multivibrator with edge-triggered inputs (nA and nB)
- Schmitt-trigger input circuitry for jitter-free triggering and excellent noise immunity
- Output pulse width defined by external timing components, with stability virtually independent of VCC and temperature
- Direct reset capability via active LOW reset inputs (nRD)
- CMOS low power dissipation
- TTL compatible input levels
- Pulse width variance typically less than ±5%
- High latch-up performance and ESD protection (HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V)
Applications
- Time-delay applications
- AV Receivers and Home Theaters
- Blu-ray Players
- Automotive and industrial electronics
- Consumer and mobile devices
- Power and computing applications
Q & A
- What is the primary function of the 74HCT221D,112?
The 74HCT221D,112 is a dual non-retriggerable monostable multivibrator, used for generating stable output pulses in response to input triggers.
- What is the supply voltage range for the 74HCT221D,112?
The supply voltage range is from 4.5V to 5.5V.
- What type of input circuitry does the 74HCT221D,112 feature?
The device features Schmitt-trigger input circuitry for jitter-free triggering and excellent noise immunity.
- How many independent multivibrators are in the 74HCT221D,112?
There are 2 independent multivibrators in the device.
- What is the propagation delay of the 74HCT221D,112?
The propagation delay is 31 ns.
- Can the output pulse be terminated directly?
- What are the operating temperature ranges for the 74HCT221D,112?
The operating temperature range is from -40°C to 125°C.
- Is the 74HCT221D,112 RoHS compliant?
- What is the output current capability of the 74HCT221D,112?
The output current capability is ±4 mA.
- What type of logic levels does the 74HCT221D,112 support?
The device supports TTL logic levels.
