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| PartNumber | 8T49N281B-001NLGI8 | 8T49N281B-003NLGI | 8T49N281B-001NLGI |
| Description | Clock Generators & Support Products FemtoClock NG UFT 2-in1 PLL 8-Out | Clock Generators & Support Products FemtoClock NG UFT 2-in1 PLL 8-Out | Clock Generators & Support Products FemtoClock NG UFT 2-in1 PLL 8-Out |
| Manufacturer | IDT | IDT | IDT |
| Product Category | Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers | Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers | Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers |
| RoHS | Details | Details | Details |
| Type | Clock Translators | Clock Translators | Clock Translators |
| Maximum Input Frequency | 875 MHz | 875 MHz | 875 MHz |
| Max Output Freq | 1 GHz | 1 GHz | 1 GHz |
| Number of Outputs | 8 Output | 8 Output | 8 Output |
| Operating Supply Voltage | 2.5 V 3.3 V | 2.5 V 3.3 V | 2.5 V 3.3 V |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-56 | VFQFPN-56 | QFN-56 |
| Packaging | Reel | Tray | Tray |
| Brand | IDT | IDT | IDT |
| Output Type | LVCMOS LVDS LVPECL | LVCMOS LVDS LVPECL | LVCMOS LVDS LVPECL |
| Series | 8T49N281B-001 | 8T49N281I | 8T49N281B-001 |
| Part # Aliases | IDT8T49N281I | 8T49N281I IDT8T49N281I | IDT8T49N281I |
| Unit Weight | 0.006751 oz | - | 0.006751 oz |