Renesas 557GI-03LFT clock source IC, PLL Yes, Input Clock/Crystal, Output HCSL/LVDS, 1 circuit, 1:2 ratio, 200 MHz max, 2.97V-3.63V, -40°C to 85°C, 16-TSSOP.
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Voltage | 2.97V ~ 3.63V |
| Frequency | 200MHz |
| Operating temperature | -40°C ~ 85°C |
| PLL | Yes |
| Input | Clock, Crystal |
| Output | HCSL, LVDS |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Main purpose | Ethernet, PCI Express (PCIe) |
| Case | 16-TSSOP (0.173\", 4.40mm Width) |
| Number of circuits | 1 |
| Ratio - Input:Output | 1:2 |
| Differential - Input:Output | No/Yes |
The Renesas 557GI-03LFT is a PLL-based clock source IC for Ethernet and PCI Express (PCIe) interfaces. It accepts a clock or crystal input and outputs two differential HCSL or LVDS signals at up to 200 MHz.
Housed in a 16-TSSOP (4.40 mm width), the part is a surface-mount device that fits the same footprint as other 16-pin TSSOP clock buffers.
The maximum output frequency is 200 MHz, which covers PCIe Gen 1 (100 MHz), Gen 2 (100 MHz), and Gen 3 (100 MHz) reference clock requirements, plus Ethernet clock rates up to 200 MHz.
The outputs are selectable between HCSL and LVDS differential pairs. This lets the same part drive either a standard PCIe HCSL-terminated load or an LVDS clock input on an FPGA or SerDes device.
The 9ZXL0851EKKLF is a functional peer — also a PLL-based PCIe clock source with HCSL outputs, but it offers a 1:8 fan-out and requires a differential input (Yes/Yes). The 557GI-03LFT takes a single-ended input (No/Yes) and fans out 1:2, so the two are not pin-compatible; the choice depends on fan-out count and input signal type needed.