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8T49N286A-016NLGI is a phase-locked loop (PLL) chip launched by (RENESAS), packaged in VFQFN, and is mainly applied in the fields of frequency conversion and clock management. The following are the key features:

Support GR.1244 Stratum 3 stability in hold mode

When paired with the synchronous 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 and SyncE)

Generate 8 LVPECL/LVDS/HCSL or 16 LVCMOS output clocks, ranging from 8 KHZ to 1.0GHz(differential) and 8 KHZ to 250MHz (LVCMOS), to meet the jitter limitations of 10G to 100G Ethernet and STM-256/OC-768 applications

0.3 picosecond root mean square value (including spurious), 12kHz to 20MHz

Up to 4 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 crystal with operating frequency ranging from 10MHz to 40MHz

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

The 8T49N286A-016NLGI features a fractional feedback PLL and can be used as a frequency converter or frequency synthesizer with jitter attenuation function. It is equipped with six integer output dividers and two decimal output dividers, capable of generating up to eight different output frequencies, ranging from 8kHz to 1GHz. The output frequency can be completely independent of the input frequency, and up to four frequencies can be completely independent of each other. The eight-channel output can be selected among LVPECL, LVDS, HCSL or LVCMOS output levels.

Typical applications

OTN or SONET/SDH equipment line card (up to OC-192, and supports FEC ratio)

OTN decommapping (Gap clock and DCO mode)

Gigabit and terbit IP switches/routers, including support for synchronous Ethernet

SyncE (G.8262) application

Wireless base station baseband

Data communication

100G Ethernet

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