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| Part Number | DM74AS21M | DM74AS21N | DM74AS21MX | DM74AS20M |
|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | onsemi | National Semiconductor |
| Product Status | Obsolete | Obsolete | Obsolete | Active |
| Logic Type | AND Gate | AND Gate | AND Gate | - |
| Number of Circuits | 2 | 2 | 2 | - |
| Number of Inputs | 4 | 4 | 4 | - |
| Features | - | - | - | - |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | - |
| Current - Quiescent (Max) | - | - | - | - |
| Current - Output High, Low | 2mA, 20mA | 2mA, 20mA | 2mA, 20mA | - |
| Logic Level - Low | 0.8V | 0.8V | 0.8V | - |
| Logic Level - High | 2V | 2V | 2V | - |
| Max Propagation Delay @ V, Max CL | 6ns @ 5V, 50pF | 6ns @ 5V, 50pF | 6ns @ 5V, 50pF | - |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | - |
| Mounting Type | Surface Mount | Through Hole | Surface Mount | - |
| Supplier Device Package | 14-SOIC | 14-DIP | 14-SOIC | - |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | 14-DIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm Width) | - |
