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| PartNumber | 74AC399SCX | 74AC399SC | 74AC399SCSMD |
| Description | Encoders, Decoders, Multiplexers & Demultiplexers Qd 2-Port Register | Encoders, Decoders, Multiplexers & Demultiplexers Qd 2-Port Register | |
| Manufacturer | ON Semiconductor | ON Semiconductor | - |
| Product Category | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | - |
| RoHS | Y | Y | - |
| Product | Multiplexers | Multiplexers | - |
| Logic Family | 74AC | 74AC | - |
| Number of Input Lines | 8 Input | 8 Input | - |
| Number of Output Lines | 4 Output | 4 Output | - |
| Propagation Delay Time | 10 ns at 3.3 V, 8 ns at 5 V | 10 ns at 3.3 V, 8 ns at 5 V | - |
| Supply Voltage Min | 2 V | 2 V | - |
| Supply Voltage Max | 6 V | 6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOIC-16 | SOIC-16 | - |
| Packaging | Reel | Tube | - |
| Function | Qd 2-Port Register | Qd 2-Port Register | - |
| Height | 1.5 mm | 1.5 mm | - |
| Length | 10 mm | 10 mm | - |
| Number of Circuits | Quad | Quad | - |
| Technology | CMOS | CMOS | - |
| Width | 4 mm | 4 mm | - |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | - |
| Logic Type | CMOS | CMOS | - |
| High Level Output Current | - 24 mA | - 24 mA | - |
| Low Level Output Current | 24 mA | 24 mA | - |
| Maximum Clock Frequency | 180 MHz | 180 MHz | - |
| Operating Supply Voltage | 2 V to 6 V | 2 V to 6 V | - |
| Product Type | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | - |
| Factory Pack Quantity | 2500 | 48 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.008536 oz | 0.008536 oz | - |