873996AYLFT

Specifications

Temperature C Voltage 3.3 V Package PTQFP 48 Speed NA Output Style Core Supply Voltage (VDD) No. of Outputs Min. Output Frequency Min. Input Frequency Output Supply Voltage (VDDO) No. of Inputs Input Style Max. Output Frequency Max. Input Frequency Temp. Grade Multiplication/Divide Value


Description

6 LVPECL OUT MUX
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 IDT873996 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 of IDT873996 will occur with minimal output phase disturbance.

The low jitter characteristics of IDT873996 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.

IDT873996 feature

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

0°C to 70°C ambient operating temperature

Available in both standard (RoHS 5) and lead-free (RoHS 6) packages