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| Part Number | DM74LS240N | DM74S240N | DM74LS20N |
|---|---|---|---|
| Manufacturer | onsemi | Fairchild Semiconductor | onsemi |
| Product Status | Obsolete | Obsolete | Obsolete |
| Logic Type | Inverter | Inverter | NAND Gate |
| Number of Circuits | 2 | 2 | 2 |
| Number of Inputs | 4 | 4 | 4 |
| Features | 3-State | 3-State | - |
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V |
| Current - Quiescent (Max) | - | - | - |
| Current - Output High, Low | 15mA, 24mA | 15mA, 64mA | 400µA, 8mA |
| Logic Level - Low | 0.8V | 0.8V | 0.8V |
| Logic Level - High | 2V | 2V | 2V |
| Max Propagation Delay @ V, Max CL | 22ns @ 5V, 150pF | 10ns @ 5V, 150pF | 15ns @ 5V, 50pF |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Supplier Device Package | 20-PDIP | 20-PDIP | 14-MDIP |
| Package / Case | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) |
