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| Part Number | 74F540SC | 74F540SJ | 74F640SC | 74F540SCX | 74F541SC | 74F543SC | 74F544SC | 74F545SC | 74F240SC | 74F540PC |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | onsemi | onsemi | Fairchild Semiconductor | Fairchild Semiconductor |
| Product Status | Obsolete | Obsolete | Active | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Logic Type | Buffer, Non-Inverting | Buffer, Non-Inverting | Transceiver, Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Inverting | Transceiver, Non-Inverting | Buffer, Inverting | Buffer, Non-Inverting |
| Number of Elements | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 |
| Number of Bits per Element | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 4 | 8 |
| Input Type | - | - | - | - | - | - | - | - | - | - |
| Output Type | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State |
| Current - Output High, Low | 3mA, 64mA | 3mA, 64mA | 15mA, 64mA | 3mA, 64mA | 3mA, 64mA | 3mA, 24mA; 3mA, 64mA | 3mA, 24mA; 3mA, 64mA | 3mA, 24mA; 15mA, 64mA | 3mA, 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 | 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) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Through Hole | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.209", 5.30mm Width) | 20-DIP (0.300", 7.62mm) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-SOIC | 20-SOP | 20-PDIP | 20-SOIC | 20-SOIC | 24-SOP | 24-SOP | 20-SOIC | 20-SOIC | 20-PDIP |
