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| Part Number | 74F540PC | 74F543PC | 74F541PC | 74F640PC | 74F540SC | 74F545PC | 74F240PC |
|---|---|---|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Logic Type | Buffer, Non-Inverting | Transceiver, Non-Inverting | Buffer, Non-Inverting | Transceiver, Inverting | Buffer, Non-Inverting | Transceiver, Non-Inverting | Buffer, Inverting |
| Number of Elements | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Number of Bits per Element | 8 | 8 | 8 | 8 | 8 | 8 | 4 |
| Input Type | - | - | - | - | - | - | - |
| Output Type | 3-State | 3-State | 3-State | - | 3-State | 3-State | 3-State |
| Current - Output High, Low | 3mA, 64mA | 3mA, 24mA; 3mA, 64mA | 3mA, 64mA | 15mA, 64mA | 3mA, 64mA | 3mA, 24mA; 15mA, 64mA | 3mA, 64mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount | Through Hole | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) | 24-DIP (0.600", 15.24mm) | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 20-SOIC (0.295", 7.50mm Width) | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP | 24-PDIP | 20-PDIP | 20-PDIP | 20-SOIC | 20-PDIP | 20-PDIP |
