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The 8T49N242-036NLGI8 is a universal frequency converter launched by (Renesas), supporting functions such as frequency conversion and jitter attenuation. It is suitable for scenarios such as synchronous Ethernet network cards and SONET/SDH devices.

The 8T49N242-036NLGI8 features a fractional feedback PLL and can be used as a frequency converter or frequency synthesizer with jitter attenuation function. The 8T49N242-034NLGI8 is equipped with four integer output dividers, capable of generating up to four different output frequencies, ranging from 8kHz to 1GHz. The output frequency can be completely independent of the input frequency. The four output channels can be selected among LVPECL, LVDS, HCSL or LVCMOS output levels.

Functional features

When 8T49N242-036NLGI8 is paired with the synchronization device timing source (SETS) device, it complies with the requirements outlined in Telcordia GR-253-CORE (SONET) and ITU-T g.813 / g.8262 (SDH/SONET & SyncE)

It generates up to 4 LVPECL/LVDS/HCSL or 16 LVCMOS output clocks, with a frequency range of 8kHz to 1.0GHz(different from), 8kHz to 250MHz (LVCMOS), meeting the jitter limitations of 10G to 25G Ethernet applications

0.276ps RMS(including spurious), 12kHz to 20MHz

Up to two LVPECL, LVDS, LVHSTL, HCSL or LVCMOS input clocks can be accepted, with a frequency range of 8kHz to 875MHz

Automatic and manual input clock selection, uninterrupted switching

Clock input monitoring, including support for intermittent clocks

Phase slope limit for controlling output phase transients and fully lossless switch options

Fundamental mode crystals with operating frequencies ranging from 10MHz to 50MHz

The registers can be programmed via I2C or an external I2C EEPROM

Application field

OTN or SONET/SDH equipment

Gigabit and terbit IP switches/routers, including synchronous Ethernet

Video broadcasting

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