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Specifications
SKU: 1179311
Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | Operating | 4.75 | 5.0 | 5.25 | V |
| Input Voltage (High) | VIH | min | 2.0 | - | - | V |
| Input Voltage (Low) | VIL | max | - | - | 0.8 | V |
| Output Voltage (High) | VOH | IOL = 0.4 mA | 2.4 | - | - | V |
| Output Voltage (Low) | VOL | IOH = 8 mA | - | - | 0.5 | V |
| Input Current (High) | IIH | VI = 2.0 V | -20 | - | - | μA |
| Input Current (Low) | IIL | VI = 0.4 V | -40 | - | - | μA |
| Output Current (Sink) | IOL | VOL = 0.4 V | - | - | 8 | mA |
| Output Current (Source) | IOH | VOH = 2.4 V | - | - | 0.4 | mA |
| Propagation Delay Time | tpd | VCC = 5 V, TA = 25°C | - | 22 | - | ns |
| Power Dissipation | PD | Operating | - | - | 300 | mW |
Instructions for Using DM74LS221N
Supply Voltage:
- Ensure the supply voltage (VCC) is within the range of 4.75 V to 5.25 V to avoid damage to the device.
Input Voltages:
- For a high input (VIH), the voltage should be at least 2.0 V.
- For a low input (VIL), the voltage should not exceed 0.8 V.
Output Voltages:
- When the output is high (VOH), it should be at least 2.4 V when sourcing 0.4 mA.
- When the output is low (VOL), it should not exceed 0.5 V when sinking 8 mA.
Current Ratings:
- The input current for a high level (IIH) should not exceed -20 μA.
- The input current for a low level (IIL) should not exceed -40 μA.
- The output can sink up to 8 mA (IOL) and source up to 0.4 mA (IOH).
Propagation Delay:
- The typical propagation delay time (tpd) is 22 ns at 25°C and 5 V supply voltage.
Power Dissipation:
- The maximum power dissipation (PD) should not exceed 300 mW.
Handling:
- Handle the device with care to avoid static discharge, which can damage the internal circuits.
- Use proper anti-static precautions when handling and soldering the device.
Storage:
- Store the device in a dry, cool place to prevent moisture damage.
Testing:
- Before using the device in a circuit, test its parameters to ensure it meets the specified values.
Layout:
- Ensure proper PCB layout to minimize noise and interference. Use decoupling capacitors close to the power pins to stabilize the supply voltage.
By following these guidelines, you can ensure reliable operation of the DM74LS221N in your circuits.
(For reference only)Inquiry - DM74LS221N
