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| Part Number | CD74HCT221E | CD74HCT221M | CD74HCT221EX | CD74HC221E |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Harris Corporation | Harris Corporation | Texas Instruments |
| Product Status | Active | Obsolete | Active | Active |
| Logic Type | Monostable | Monostable | Monostable | Monostable |
| Independent Circuits | 2 | 2 | 2 | 2 |
| Schmitt Trigger Input | Yes | Yes | Yes | Yes |
| Propagation Delay | 18 ns | 18 ns | 18 ns | 18 ns |
| Current - Output High, Low | 4mA, 4mA | 4mA, 4mA | 4mA, 4mA | 5.2mA, 5.2mA |
| Voltage - Supply | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 2 V ~ 6 V |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-SOIC (0.154", 3.90mm Width) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-PDIP | 16-SOIC | 16-PDIP | 16-PDIP |
