IDT, Integrated Device Technology Inc IDT5T940-30NLGI

Description
The IDT5T940 is a precision clock generator that generates a highprecision FEC (Forward Error Correction) or nonFEC source clock for SONET/SDH systems and a source clock for Gigabit Ethernet systems. It also has clock regeneration capability, creating a "clean" version of the clock input by using an internal oscillator to square the input clock's rising and falling edges and remove jitter. In the event of a main clock input failure, the device automatically locks to a backup reference clock using a hitless switchover mechanism.

Features
Input frequency:
For SONET nonFEC: 19.44MHz, 38.88MHz, 77.76MHz, 155.52MHz, 311.04MHz, or 622.08MHz
For SONET FEC: 20.83MHz, 41.66MHz, 83.31MHz, 166.63MHz, 333.26MHz, or 666.52MHz
For 10GE copper: 19.53MHz, 39.06MHz, 78.125MHz, 156.25MHz, 312.5MHz, or 625MHz
For 10GE optical: 20.14MHz, 40.28MHz, 80.56MHz, 161.13MHz, 322.26MHz, or 644.53MHz
3level inputs for feedback divide ratio and output frequency range selection
1x, 2x, 4x, 8x, 16x, and 32x outputs on Qout
Regenerated input clock or QOUT/4 on QREG
Lock indicator
Powerdown mode
LVPECL or LVDS outputs
Three modes of output frequency range
Selectable loop bandwidths
Hitless switchover
Differential LVPECL, LVDS, or singleended LVTTL input interface
2.3753.465V core and I/O
Available in VFQFPN package

Applications
Terabit routers
Gigabit ethernet systems
SONET/SDH systems
Digital cross connects
Optical transceiver modules