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873996 Datasheet PDF

Renesas Electronics 873996

The 873996 is a Zero Delay/Multiplier/Divider with hitless input clock switching capability and a member of the family of low jitter/phase noise devices from IDT. The 873996 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.
Part No. 873996
Datasheet 873996 Download
Manufacturer
Renesas Electronics
Description Differential-to-3.3V LVPECL Zero Delay/Multiplier/Divider
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873996 datasheet page 1 preview

GENERAL DESCRIPTION

The output divider and feedback divider selections also allow for frequency multiplication or division. The 873996 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 873996 an ideal choice for mission critical applications that utilize 1G or 10G Ethernet or 1G/4G/10G Fibre Channel.

FEATURES

● 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
● Ou...
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