| Part Number | N74F240D,623 | N74F540D,623 |
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| Manufacturer | NXP USA Inc. | NXP USA Inc. |
| Category | Logic - Buffers, Drivers, Receivers, Transceivers | Logic - Buffers, Drivers, Receivers, Transceivers |
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| Product Status | Obsolete | Obsolete |
| Logic Type | Buffer, Inverting | Buffer, Inverting |
| Number of Elements | 2 | 1 |
| Number of Bits per Element | 4 | 8 |
| Input Type | - | - |
| Output Type | 3-State | 3-State |
| Current - Output High, Low | 15mA, 64mA | 15mA, 64mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SO | 20-SO |