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| PartNumber | NB4N121KMNG | NB4N121KMNR2G | NB4N121KMNGEVB |
| Description | Clock Buffer UTL TSMC 1:21 FANOUT HCSL | Clock Buffer TSMC 1:21 FANOUT BUF HCSL | Clock & Timer Development Tools TSMC HCSL 1:21 FANOUT BUF |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | Clock Buffer | Clock Buffer | Clock & Timer Development Tools |
| RoHS | Y | Y | - |
| Series | NB4N121K | NB4N121K | - |
| Number of Outputs | 42 Output | 42 Output | - |
| Maximum Input Frequency | 400 MHz | 400 MHz | - |
| Propagation Delay Max | 0.95 ns | 0.95 ns | - |
| Supply Voltage Max | 3.6 V | 3.6 V | - |
| Supply Voltage Min | 3 V | 3 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | QFN-52 EP | QFN-52 EP | - |
| Packaging | Tray | Reel | Bulk |
| Height | 1 mm | 1 mm | - |
| Length | 8 mm | 8 mm | - |
| Width | 8 mm | 8 mm | - |
| Brand | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Type | Clock Buffer | Clock Buffer | Clock & Timer Development Tools |
| Factory Pack Quantity | 260 | 2000 | 1 |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Development Tools |
| Unit Weight | 0.000843 oz | - | - |