Renesas’ Timing product portfolio has been acquired by SiTime.
Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to SalesClocks@sitime.com. Full transition to SiTime is expected by late 2026.
| CAD Model: | View CAD Model |
| Pkg. Type: | TSSOP |
| Pkg. Code: | PGG20 |
| Lead Count (#): | 20 |
| Pkg. Dimensions (mm): | 6.5 x 4.4 x 1.0 |
| Pitch (mm): | 0.65 |
| Moisture Sensitivity Level (MSL) | 1 |
| Pb (Lead) Free | Yes |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| Lead Count (#) | 20 |
| Carrier Type | Reel |
| Moisture Sensitivity Level (MSL) | 1 |
| Qty. per Reel (#) | 3000 |
| Qty. per Carrier (#) | 0 |
| Pb (Lead) Free | Yes |
| Pb Free Category | e3 Sn |
| Temp. Range (°C) | -40 to 85°C |
| Country of Assembly | TAIWAN |
| Country of Wafer Fabrication | SINGAPORE |
| Advanced Features | Spread Spectrum |
| App Jitter Compliance | PCIe Gen1 |
| Architecture | Common |
| C-C Jitter Max P-P (ps) | 80 |
| C-C Jitter Typ P-P (ps) | 65 |
| Core Voltage (V) | 3.3 |
| Diff. Output Signaling | HCSL |
| Diff. Outputs | 4 |
| Diff. Termination Resistors | 16 |
| Input Freq (MHz) | 25 - 25 |
| Input Type | Crystal, LVCMOS |
| Inputs (#) | 1 |
| Length (mm) | 6.5 |
| MOQ | 3000 |
| Output Banks (#) | 1 |
| Output Freq Range (MHz) | 100 - 100, 200 - 200 |
| Output Skew (ps) | 50 |
| Output Type | HCSL |
| Output Voltage (V) | 3.3 |
| Outputs (#) | 4 |
| PLL | Yes |
| Package Area (mm²) | 28.6 |
| Pitch (mm) | 0.65 |
| Pkg. Dimensions (mm) | 6.5 x 4.4 x 1.0 |
| Pkg. Type | TSSOP |
| Power Consumption Typ (mW) | 396 |
| Product Category | PCI Express Clocks |
| Prog. Clock | No |
| Reel Size (in) | 13 |
| Reference Output | No |
| Requires Terms and Conditions | Does not require acceptance of Terms and Conditions |
| Spread Spectrum | Yes |
| Supply Voltage (V) | 3.3 - 3.3 |
| Tape & Reel | Yes |
| Thickness (mm) | 1 |
| Width (mm) | 4.4 |
| Xtal Freq (MHz) | 25 - 25 |
The 557-05A is a spread-spectrum clock generator that supports PCI-Express requirements. It is used in PC or embedded systems to substantially reduce electro-magnetic interference (EMI). The device provides four differential HCSL or LVDS high-frequency outputs with spread spectrum capability. The output frequency and spread type are selectable using external pins.