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| Part Number | SN74121N | SN74123N | SN74221N | SN74121D |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active | Active |
| Logic Type | Monostable | Monostable | Monostable | Monostable |
| Independent Circuits | 2 | 2 | 2 | 2 |
| Schmitt Trigger Input | No | No | No | No |
| Propagation Delay | 45 ns | 22 ns | 40 ns | 45 ns |
| Current - Output High, Low | 400µA, 16mA | 800µA, 16mA | 800µA, 16mA | 400µA, 16mA |
| Voltage - Supply | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Through Hole | Through Hole | Through Hole | Surface Mount |
| Package / Case | 14-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 14-PDIP | 16-PDIP | 16-PDIP | 14-SOIC |
