CD74HC221M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC221M is a high-speed CMOS dual monostable multivibrator with non-retriggerable inputs and active-low reset. Features 2-bit logic, 50pF load capacitance, and 5.2mA output current. From $0.21, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC221M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2100(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual non-retriggerable monostable multivibrator with independent trigger and reset inputs per channel
- High-speed HC/UH CMOS family with 50pF load capacitance and 5.2mA output drive current
- Active-low reset allows immediate termination of output pulse for precise timing control
- Wide supply voltage range compatible with standard 5V CMOS and 3.3V systems
Applications
The CD74HC221M is widely used in digital timing and pulse-generation circuits, including one-shot pulse stretching, debouncing mechanical switches, and generating precise delay intervals in microcontroller-based designs. Its dual-channel architecture makes it ideal for sequential timing applications in industrial control systems, communication interfaces, and consumer electronics where independent retriggerable protection is required.
Specifications
| YTEOL | 0 |
| Additional Feature | NON-RETRIGGERABLE |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | MONOSTABLE MULTIVIBRATOR |
| Max I(ol) | 0.0052A |
| Number of Bits | 2 |
| Number of Data/Clock Inputs | 2 |
| Number of Functions | 2 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Propagation Delay (tpd) | 315ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC221M:
Frequently Asked Questions
What is the output pulse width range of the CD74HC221M?
The output pulse width of the CD74HC221M is determined by an external resistor (Rx) and capacitor (Cx) connected to the timing pins. Typical pulse widths range from nanoseconds to several seconds depending on the RC values chosen, giving designers flexible timing control for pulse-stretching and delay applications.
Can the CD74HC221M be triggered again while the output pulse is active?
No. The CD74HC221M is a non-retriggerable monostable multivibrator. Once triggered, applying additional trigger pulses during the output pulse period has no effect. The output pulse will complete its full RC-determined duration before the device can be retriggered, ensuring a stable, fixed-width output pulse.
What package options are available for the CD74HC221M and what is its operating voltage?
The CD74HC221M is available in a 16-pin Small Outline (SOIC) package suitable for surface-mount assembly. It operates over a supply voltage range of 2V to 6V, making it compatible with both 3.3V and 5V logic systems commonly used in embedded and industrial designs.
What are common applications for the CD74HC221M?
Common applications include mechanical switch debouncing, one-shot pulse generation, timing delay circuits, edge-to-pulse conversion, and sequential control logic in industrial automation, motor control, communication interfaces, and consumer electronics requiring precise, noise-immune pulse timing.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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| 37+ | $0.3500 | $12.95 |
| 172+ | $0.2100 | $36.12 |
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