Package Information
| Lead Count (#) | 8 |
| Pkg. Code | DCG8 |
| Pitch (mm) | 1.27 |
| Pkg. Type | SOIC |
| Pkg. Dimensions (mm) | 4.9 x 3.9 x 1.5 |
Environmental & Export Classifications
| Moisture Sensitivity Level (MSL) | 1 |
| Pb (Lead) Free | Yes |
| ECCN (US) | NLR |
| HTS (US) | 8542390000 |
Product Attributes
| 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 | 0 to 70°C |
| Advanced Features | Spread Spectrum |
| Core Voltage (V) | 2.5, 3.3 |
| Feedback Input | No |
| Input Freq (MHz) | 25 - 25 |
| Input Type | Crystal |
| Inputs (#) | 1 |
| Length (mm) | 4.9 |
| MOQ | 97 |
| Output Banks (#) | 1 |
| Output Freq Range (MHz) | 75 - 75 |
| Output Type | LVPECL |
| Output Voltage (V) | 2.5, 3.3 |
| Outputs (#) | 1 |
| Package Area (mm²) | 19.1 |
| Phase Jitter Typ RMS (ps) | 0.734 |
| Pitch (mm) | 1.27 |
| Pkg. Dimensions (mm) | 4.9 x 3.9 x 1.5 |
| Pkg. Type | SOIC |
| Prog. Clock | No |
| Reference Output | No |
| Requires Terms and Conditions | Does not require acceptance of Terms and Conditions |
| Spread Spectrum | Yes |
| Tape & Reel | No |
| Thickness (mm) | 1.5 |
| Width (mm) | 3.9 |
Description
The 843751 is a low jitter, high performance clock generator. The 843751 is designed for use in the SAS-2 interconnect and the three transport protocols that use the SAS-2 interconnect: Serial SCSI Protocol (SSP), Serial ATA Tunneled Protocol (STP), and Serial Management Protocol (SMP). The 843751 has excellent (<1ps) RMS phase jitter, over the SAS defined integration range. The 843751 uses an external, 25MHz, parallel resonant crystal to generate 75MHz. This silicon based approach provides excellent frequency stability and reliability. The 843751 features up, down, and center spread spectrum (SSC) clocking techniques. The up, down and center SSC will be required in the SAS-2 applications that have three clock trees in the HBA and expander ASICs.