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: | VFQFPN |
| Pkg. Code: | NLG56 |
| Lead Count (#): | 56 |
| Pkg. Dimensions (mm): | 8.0 x 8.0 x 0.85 |
| Pitch (mm): | 0.5 |
| Moisture Sensitivity Level (MSL) | 3 |
| Pb (Lead) Free | Yes |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| Lead Count (#) | 56 |
| Carrier Type | Reel |
| Moisture Sensitivity Level (MSL) | 3 |
| Qty. per Reel (#) | 3000 |
| Qty. per Carrier (#) | 0 |
| Pb (Lead) Free | Yes |
| Pb Free Category | e3 Sn |
| Temp. Range (°C) | -40 to 85°C |
| Additive Phase Jitter Typ RMS (fs) | 300 |
| Advanced Features | Programmable Clock, Feedback Input |
| Core Voltage (V) | 3.3V, 2.5V |
| Feedback Input | Yes |
| Input Freq (MHz) | 10 - 120 |
| Input Type | Crystal, Differential |
| Inputs (#) | 2 |
| Length (mm) | 8 |
| MOQ | 3000 |
| Output Banks (#) | 5 |
| Output Freq Range (MHz) | 8.33 - 125 |
| Output Type | LVPECL, LVDS, LVCMOS |
| Output Voltage (V) | 3.3V, 2.5V |
| Outputs (#) | 13 |
| Package Area (mm²) | 64 |
| Pitch (mm) | 0.5 |
| Pkg. Dimensions (mm) | 8.0 x 8.0 x 0.85 |
| Pkg. Type | VFQFPN |
| Product Category | Ultra-Low Jitter Clocks (<300 fs RMS) |
| Prog. Clock | Yes |
| Prog. Interface | Serial |
| Reel Size (in) | 13 |
| Reference Output | Yes |
| Requires Terms and Conditions | Does not require acceptance of Terms and Conditions |
| Spread Spectrum | No |
| Tape & Reel | Yes |
| Thickness (mm) | 0.85 |
| Width (mm) | 8 |
The 8T49N4811 is a highly flexible FemtoClock® NG pin-programmable clock generator suitable for networking and communications applications. It can generate five different output frequencies with multiple copies of each. A fundamental mode crystal, single-ended, or differential input reference may be used as the source for the output frequency.
The use of pin programming to select the input source/frequency, desired output frequencies, and output styles allows a single device to be used in a wide variety of applications without the need for register programming.
Selection pins use 3-level options to maximize flexibility while minimizing package size. Selection is performed by tying a selection pin high or low or by leaving it floating, eliminating the need for passive components to drive a desired logic level.