74HC221 Dual Non-Retriggerable Monostable Multivibrator With Reset IC- SOIC-16 Package
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 RX and CX provides 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 500Ω. The minimum value of external capacitance, CX, is 0pF. The calculation for the pulse width is tW = 0.7 RXCX at VCC = 4.5V.
This Product is known as 74221 IC, 74221 SMD IC, 74HC221 IC, 74HC221 SMD IC, Components, Dual Non-Retriggerable Monostable Multivibrator with Reset IC, Dual Non-Retriggerable Monostable Multivibrator with Reset SMD IC, CD74HC221E, CD74HC221M96, CD74HC221M, CD74HC221MT, CD74HC221NSR,
Features:
- Overriding RESET Terminates Output Pulse
- Triggering from the Leading or Trailing Edge
- Q and Q Buffered Outputs
- Separate Resets
- Wide Range of Output-Pulse Widths
- Schmitt Trigger on B Inputs
Features/Specs:
- Series: 74HC221
- Product Type: Monostable Multivibrator
- Logic Type: Monostable Multivibrator
- Elements per Chip: 2
- Logic Family: HC
- Supply Current – Max: 0.008 mA
- Propagation Delay Time: 210 ns, 42 ns, 36 ns
- High Level Output Current: – 5.2 mA
- Low Level Output Current: 5.2 mA
- Supply Voltage – Max: 6 V
- Supply Voltage – Min: 2 V
- Power Dissipation: 166 mW
- Minimum Operating Temperature: – 55°C
- Maximum Operating Temperature: + 125°C
- Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
- Mounting Style: SMD/SMT
- Package/Case: SOIC-16
Package Includes:
- 1 x 74HC221 Dual Non-Retriggerable Monostable Multivibrator With Reset IC- SOIC-16 Package
Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
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