CD54HC221F3A
ActiveHIGH SPEEC CMOS LOGIC DUAL MONOSTABLE MULTIVIBRATOR WITH RESET
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CD54HC221F3A
ActiveHIGH SPEEC CMOS LOGIC DUAL MONOSTABLE MULTIVIBRATOR WITH RESET
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Technical Specifications
Parameters and characteristics for this part
| Specification | CD54HC221F3A |
|---|---|
| Current - Output High, Low | 5.2 mA, 5.2 mA |
| Independent Circuits | 2 |
| Logic Type | Monostable |
| Mounting Type | Through Hole |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -55 °C |
| Package / Case | 16-CDIP (0.300", 7.62mm) |
| Propagation Delay | 18 ns |
| Schmitt Trigger Input | True |
| Supplier Device Package | 16-CDIP |
| Voltage - Supply [Max] | 6 V |
| Voltage - Supply [Min] | 2 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
CD54HC221 Series
High Speec CMOS Logic Dual Monostable Multivibrator with Reset
| Part | Schmitt Trigger Input | Supplier Device Package | Operating Temperature [Min] | Operating Temperature [Max] | Voltage - Supply [Max] | Voltage - Supply [Min] | Propagation Delay | Current - Output High, Low | Mounting Type | Package / Case | Independent Circuits | Logic Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments CD54HC221F3AThe ’HC221 and CD74HCT221 are dual monostable multivibrators with reset. An external resistor (RX) and an external capacitor (CX) control the timing and the accuracy for the circuit. Adjustment of RXand CXprovides a wide range of output pulse widths from the Q and Q\ terminals. Pulse triggering on the B input occurs at a particular voltage level and is not related to the rise and fall time of the trigger pulse.
Once triggered, the outputs are independent of further trigger inputs on A\ and B. The output pulse can be terminated by a LOW level on the Reset (R)\ pin. Trailing Edge triggering (A)\ and leading-edge-triggering (B) inputs are provided for triggering from either edge of the input pulse. On power up, the IC is reset. If either Mono is not used each input (on the unused device) must be terminated either high or low.
The minimum value of external resistance, RX, is typically 500. The minimum value of external capacitance, CX, is 0pF. The calculation for the pulse width is tW= 0.7 RXCXat VCC= 4.5V.
The ’HC221 and CD74HCT221 are dual monostable multivibrators with reset. An external resistor (RX) and an external capacitor (CX) control the timing and the accuracy for the circuit. Adjustment of RXand CXprovides a wide range of output pulse widths from the Q and Q\ terminals. Pulse triggering on the B input occurs at a particular voltage level and is not related to the rise and fall time of the trigger pulse.
Once triggered, the outputs are independent of further trigger inputs on A\ and B. The output pulse can be terminated by a LOW level on the Reset (R)\ pin. Trailing Edge triggering (A)\ and leading-edge-triggering (B) inputs are provided for triggering from either edge of the input pulse. On power up, the IC is reset. If either Mono is not used each input (on the unused device) must be terminated either high or low.
The minimum value of external resistance, RX, is typically 500. The minimum value of external capacitance, CX, is 0pF. The calculation for the pulse width is tW= 0.7 RXCXat VCC= 4.5V. | 16-CDIP | -55 °C | 125 °C | 6 V | 2 V | 18 ns | 5.2 mA, 5.2 mA | Through Hole | 16-CDIP (0.300", 7.62mm) | 2 | Monostable |
Description
General part information
CD54HC221 Series
The ’HC221 and CD74HCT221 are dual monostable multivibrators with reset. An external resistor (RX) and an external capacitor (CX) control the timing and the accuracy for the circuit. Adjustment of RXand CXprovides a wide range of output pulse widths from the Q and Q\ terminals. Pulse triggering on the B input occurs at a particular voltage level and is not related to the rise and fall time of the trigger pulse.
Once triggered, the outputs are independent of further trigger inputs on A\ and B. The output pulse can be terminated by a LOW level on the Reset (R)\ pin. Trailing Edge triggering (A)\ and leading-edge-triggering (B) inputs are provided for triggering from either edge of the input pulse. On power up, the IC is reset. If either Mono is not used each input (on the unused device) must be terminated either high or low.
The minimum value of external resistance, RX, is typically 500. The minimum value of external capacitance, CX, is 0pF. The calculation for the pulse width is tW= 0.7 RXCXat VCC= 4.5V.
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