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: | SOIC |
| Pkg. Code: | DCG8 |
| Lead Count (#): | 8 |
| Pkg. Dimensions (mm): | 4.9 x 3.9 x 1.5 |
| Pitch (mm): | 1.27 |
| Moisture Sensitivity Level (MSL) | 1 |
| Pb (Lead) Free | Yes |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| Lead Count (#) | 8 |
| Carrier Type | Tube |
| Moisture Sensitivity Level (MSL) | 1 |
| Qty. per Reel (#) | 0 |
| Qty. per Carrier (#) | 97 |
| Pb (Lead) Free | Yes |
| Pb Free Category | e3 Sn |
| Temp. Range (°C) | 0 to 70°C |
| Country of Assembly | TAIWAN |
| Country of Wafer Fabrication | SINGAPORE |
| Core Voltage (V) | 3.3V, 5V |
| Function | Buffer |
| Input Freq (MHz) | 160 |
| Input Type | LVCMOS |
| Inputs (#) | 1 |
| Length (mm) | 4.9 |
| MOQ | 485 |
| Output Banks (#) | 1 |
| Output Freq Range (MHz) | 160 |
| Output Skew (ps) | 250 |
| Output Type | LVCMOS |
| Output Voltage (V) | 3.3V, 5V |
| Outputs (#) | 4 |
| Package Area (mm²) | 19.1 |
| Pitch (mm) | 1.27 |
| Pkg. Dimensions (mm) | 4.9 x 3.9 x 1.5 |
| Pkg. Type | SOIC |
| Price (USD) | $1.26675 |
| Product Category | Clock Buffers & Drivers |
| Requires Terms and Conditions | Does not require acceptance of Terms and Conditions |
| Tape & Reel | No |
| Thickness (mm) | 1.5 |
| Width (mm) | 3.9 |
The 551 is a low cost, high-speed single input to four output clock buffer. Part of Renesas' ClockBlocksTM family, this is our lowest cost, small clock buffer. See the 552-02B for monolithic dual version of the 551 in a 20 pin QSOP. IDT makes many non-PLL and PLL based low skew output devices as well as Zero Delay Buffers to synchronize clocks. Contact Renesas for all of your clocking needs.