Redundant Differential-input LVPECL-output 2:6 640-MHz Clock Generator

The IDT873996 is a Zero Delay/Multiplier/Divider with hitless input Clock switching capability and a member of the HiPerClockS family of low jitter/phase noise devices from IDT. The IDT873996 is ideal for use in redundant, fault tolerant Clock trees where low phase noise and low jitter are critical. The device receives two differential LVPECL Clock signals from which it generates 6 LVPECL Clock outputs with zero delay. The output divider and feedback divider selections also allow for frequency multiplication or division. The IDT873996 Dynamic Clock Switch (DCS) circuit continuously monitors both input Clock signals. Upon detection of a failure (input Clock stuck LOW or HIGH for at least 1 period), INP_BAD for that Clock will be set HIGH. If that Clock is the primary Clock the DCS will Switch to the good secondary Clock and phase/frequency alignment will occur with minimal output phase disturbance. The low jitter characteristics combined with input Clock monitor-ing and Automatic switching from bad to good input Clocks make the IDT873996 an ideal choice for mission critical applications that utilize 1G or 10G Ethernet or 1G/4G/10G Fibre Channel. Six differential 3.3V LVPECL outputs Selectable differential Clock inputs CLKx, nCLKx pair CAN accept the following differential input levels: LVPECL, LVDs LVHSTL, HCSL, SSTL Input Clock frequency range: 49MHz to 213.33MHz Output Clock frequency range: 49MHz to 640MHz VCO range: 490MHz to 640MHz External feedback for zero delay Clock regeneration with configurable frequencies Output skew: 25ps (typical) RMS phase jitter (1.875MHz - 20MHz): 0.6ps (typical) assuming a low phase noise reference Clock input 3.3V supply voltage 0C to 70C ambient operating temperature Available in both standard (RoHS 5) and lead-free (RoHS 6) packages By Integrated Device Technology
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ICS873996 Pinout, Pinouts
ICS873996 pinout,Pin out
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