8T49N287
Description
The 8T49N287 has two independent, fractional-feedback PLLs that can be used as jitter attenuators and frequency translators.
Key Features
- Supports SDH/SONET and Synchronous Ethernet clocks including all FEC rate conversions
- <0.3ps RMS Typical jitter (including spurs), 12kHz to 20MHz
- Operating modes: locked to input signal, holdover and free-run
- Initial holdover accuracy of ±50ppb
- Accepts up to two LVPECL, LVDS, LVHSTL, HCSL, or LVCMOS input clocks
- Accepts frequencies ranging from 8kHz up to 875MHz
- Auto and manual input clock selection with hitless switching
- Clock input monitoring, including support for gapped clocks
- Phase-Slope Limiting and Fully Hitless Switching options to control output phase transients
- Operates from a 10MHz to 40MHz fundamental-mode crystal
Applications
- OTN de-mapping (Gapped Clock and DCO mode)
