9EX21831AKLF

DATASHEET Eighteen Output Differential Buffer w/2 input mux for PCIe Gen1/2/3 Recommended Application: Features/Benefits: 18 Output PCIe G3 Differential Buffer with 2:1 input mux • General Description • The ICS9EX21831 provides 18 output clocks for PCIe Gen1/ 2/3 applications. The 9EX21831 has 4 selectable SMBus addresses, and dedicated CKPWRGD/PD# and VDDA pins for easy board design. A differential clock from a CK410B+ or CK420BQ main clock generator, such as the ICS932S421, drives the ICS9EX21831. In fanout mode, the 9EX21831 provides outputs up to 166MHz. • • • • Output Features: • • • 18 - 0.7V current mode differential HCSL output pairs 9EX21831 Pin compatible to 9EX21801/ Easy PCIe Gen3 upgrade 4 Selectable SMBus Addresses/Mulitple devices can share the same SMBus Segment 10 dedicated and 2 group OE# pins/Hardware control of the outputs PLL or bypass mode/PLL can dejitter incoming clock Selectable PLL bandwidth/minimizes jitter peaking in downstream PLL's Spread Spectrum Compatible/tracks spreading input clock for low EMI SMBus Interface/unused outputs can be disabled Undriven differential outputs in Power Down mode/ Easy power management Key Specifications: • • • Cycle-to-cycle jitter