Renesas 9ZX21901BKLFT, PCI Express / Intel QPI clock buffer, PLL Yes, Input Clock, Output HCSL, 400 MHz max, 2:19 ratio, 3.135V–3.465V supply, 0°C to 70°C, 72-VFQFPN (10x10).
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Supply voltage | 3.135V ~ 3.465V |
| Frequency - max | 400MHz |
| Operating temperature | 0°C ~ 70°C |
| PLL | Yes |
| Input | Clock |
| Output | HCSL |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Main purpose | Intel QPI, PCI Express (PCIe) |
| Case | 72-VFQFN Exposed Pad |
| Number of circuits | 1 |
| Ratio - Input:Output | 2:19 |
| Differential - Input:Output | Yes/Yes |
The Renesas 9ZX21901BKLFT is a PLL-based clock buffer for Intel QPI and PCI Express interfaces. It accepts two differential input clocks and fans them out to 19 HCSL outputs at up to 400 MHz.
No last-time-buy notice or end-of-life announcement is on record.
The maximum output frequency is 400 MHz, which covers PCIe Gen1/2/3 and Intel QPI reference clock requirements.
Yes, it is ROHS3 compliant.
The 9DB803DFLFT is a functional peer with the same PLL, HCSL output, and PCIe purpose, but it offers a 1:8 fanout instead of 2:19. For a wider fanout, the 9ZX21901BKLFT is the higher-density option.