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 [email protected]. Full transition to SiTime is expected by late 2026.
| CAD Model: | View CAD Model |
| Pkg. Type: | TQFP |
| Pkg. Code: | PRG32 |
| Lead Count (#): | 32 |
| Pkg. Dimensions (mm): | 7.0 x 7.0 x 1.4 |
| Pitch (mm): | 0.8 |
| Moisture Sensitivity Level (MSL) | 3 |
| Pb (Lead) Free | Yes |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| Lead Count (#) | 32 |
| Carrier Type | Tray |
| Moisture Sensitivity Level (MSL) | 3 |
| Qty. per Reel (#) | 0 |
| Qty. per Carrier (#) | 250 |
| Pb (Lead) Free | Yes |
| Pb Free Category | e3 Sn |
| Temp. Range (°C) | -40 to 85°C |
| Additive Phase Jitter Typ RMS (fs) | 20 |
| Additive Phase Jitter Typ RMS (ps) | 0.02 |
| Core Voltage (V) | 3.3V, 2.5V |
| Function | Buffer, Multiplexer |
| Input Freq (MHz) | 250 |
| Input Type | LVPECL, LVDS, HSTL, SSTL, HCSL, LVCMOS |
| Inputs (#) | 2 |
| Length (mm) | 7 |
| MOQ | 250 |
| Output Banks (#) | 1 |
| Output Freq Range (MHz) | 250 |
| Output Signaling | LVCMOS |
| Output Skew (ps) | 500 |
| Output Type | LVCMOS |
| Output Voltage (V) | 3.3V, 2.5V |
| Outputs (#) | 9 |
| Package Area (mm²) | 49 |
| Pitch (mm) | 0.8 |
| Pkg. Dimensions (mm) | 7.0 x 7.0 x 1.4 |
| Pkg. Type | TQFP |
| Product Category | Clock Buffers & Drivers, Clock Multiplexers |
| Requires Terms and Conditions | Does not require acceptance of Terms and Conditions |
| Tape & Reel | No |
| Thickness (mm) | 1.4 |
| Width (mm) | 7 |
The 83947I-147 is a low skew, 1-to-9 LVCMOS/LVTTL Fanout Buffer. The low impedance LVCMOS/LVTTL outputs are designed to drive 50Ω series or parallel terminated transmission lines. The effective fanout can be increased from 9 to 18 by utilizing the ability of the outputs to drive two series terminated lines. Guaranteed output and part-to-part skew characteristics make the 83947I-147 ideal for high performance, 3.3V or 2.5V single ended applications.