8T49N287
Description
The 8T49N287 has two independent, fractional-feedback PLLs that can be used as jitter attenuators and frequency translators. It is equipped with six integer and two fractional output dividers, allowing the generation of up to 8 different output frequencies, ranging from 8k Hz to 1GHz. Four of these frequencies are pletely independent of each other and the inputs. The other four are related frequencies. The eight outputs may select among LVPECL, LVDS, HCSL or LVCMOS output levels.
This makes it ideal to be used in any frequency translation application, including 1G, 10G, 40G and 100G Synchronous Ethernet, OTN, and SONET/SDH, including ITU-T G.709 (2009) FEC rates. The device may also behave as a frequency synthesizer.
The 8T49N287 accepts up to two differential or single-ended input clocks and a crystal input. Each of the two internal PLLs can lock to different input clocks which may be of...
