Package Information
| Pkg. Type: | SSOP |
| Pkg. Code: | PVG48 |
| Lead Count (#): | 48 |
| Pkg. Dimensions (mm): | 15.9 x 7.5 x 2.3 |
| Pitch (mm): | 0.64 |
Environmental & Export Classifications
| Pb (Lead) Free | Yes |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| Moisture Sensitivity Level (MSL) | 1 |
Product Attributes
| Pkg. Type | SSOP |
| Lead Count (#) | 48 |
| Pb (Lead) Free | Yes |
| Carrier Type | Reel |
| C-C Jitter Max P-P (ps) | 250 |
| Chipset Manufacturer | VIA |
| Core Voltage (V) | 3.3 |
| Feedback Input | No |
| Function | Clock Generator |
| Input Freq (MHz) | 14.318 - 14.318 |
| Input Type | Crystal |
| Inputs (#) | 1 |
| Length (mm) | 15.9 |
| MOQ | 1000 |
| Moisture Sensitivity Level (MSL) | 1 |
| Output Banks (#) | 8 |
| Output Freq Range (MHz) | 14.318 - 233.33 |
| Output Skew (ps) | 500 |
| Output Voltage (V) | 2.5V, 3.3V |
| Package Area (mm²) | 119.3 |
| Pb Free Category | e3 Sn |
| Period Jitter Max P-P (ps) | 1000 |
| Pitch (mm) | 0.64 |
| Pkg. Dimensions (mm) | 15.9 x 7.5 x 2.3 |
| Prog. Clock | Yes |
| Prog. Interface | I2C |
| Qty. per Carrier (#) | 0 |
| Qty. per Reel (#) | 1000 |
| Reel Size (in) | 13 |
| Reference Output | Yes |
| Requires Terms and Conditions | Does not require acceptance of Terms and Conditions |
| Spread Spectrum | Yes |
| Tape & Reel | Yes |
| Temp. Range (°C) | 0 to 70°C |
| Thickness (mm) | 2.3 |
| Width (mm) | 7.5 |
Resources for 94228
Description
The 94228 is a main clock synthesizer chip for AMD-K7 based systems with VIA style chipset. This provides all clocks required for such a system. The 94228 employs serial programming I2C interface as a vehicle for changing output functions, changing output frequency, configuring output strength, configuring output-to-output skew, changing spread spectrum amount, changing group divider ratio, and disabling/enabling individual clocks. This device also has propriety watchdog timer technology which will reset the frequency to a safe setting if the system becomes unstable from over-clocking.