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| PartNumber | SN74LS221D | SN74LS221DB | SN74LS221DBR |
| Description | Monostable Multivibrator Dual Mono | Monostable Multivibrator Dual w/Schmitt-trgr inputs | |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Monostable Multivibrator | Logic - Multivibrators | Logic - Multivibrators |
| RoHS | Y | - | - |
| Elements per Chip | 2 | 2 | 2 |
| Logic Family | LS | LS | LS |
| Logic Type | Monostable Multivibrator | Monostable | Monostable |
| Package / Case | SOP-16 | - | - |
| Supply Current Max | 4.7 mA | - | - |
| Propagation Delay Time | 80 ns | 80 ns | 80 ns |
| High Level Output Current | - 0.4 mA | - 0.4 mA | - 0.4 mA |
| Low Level Output Current | 8 mA | 8 mA | 8 mA |
| Supply Voltage Max | 5.25 V | - | - |
| Supply Voltage Min | 4.75 V | - | - |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Packaging | Tube | Digi-ReelR Alternate Packaging | Digi-ReelR Alternate Packaging |
| Height | 1.58 mm | - | - |
| Length | 9.9 mm | - | - |
| Series | SN74LS221 | 74LS | 74LS |
| Width | 3.91 mm | - | - |
| Brand | Texas Instruments | - | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Operating Supply Voltage | 5 V | 5 V | 5 V |
| Product Type | Monostable Multivibrator | - | - |
| Factory Pack Quantity | 40 | - | - |
| Subcategory | Logic ICs | - | - |
| Unit Weight | 0.004998 oz | 0.004536 oz | 0.004536 oz |
| Package Case | - | SSOP-16 | SSOP-16 |
| Operating Temperature | - | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | - | Surface Mount | Surface Mount |
| Voltage Supply | - | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V |
| Supplier Device Package | - | 16-SSOP | 16-SSOP |
| Current Output High Low | - | 400μA, 8mA | 400μA, 8mA |
| Schmitt Trigger Input | - | No | No |
| Independent Circuits | - | 2 | 2 |
| Propagation Delay | - | 45ns | 45ns |
| Supply Current Max | - | 4.7 mA | 4.7 mA |
| Supply Voltage Max | - | 5.25 V | 5.25 V |
| Supply Voltage Min | - | 4.75 V | 4.75 V |