Clock distribution IC with integrated PLL — what it does and where it fits
The Cypress CY2308SXI-1HT is a zero delay buffer that takes a single LVCMOS or LVTTL reference clock and distributes it to eight LVCMOS outputs with matched phase alignment. An internal PLL locks to the input and deskews the outputs, so propagation delay from input to any output is effectively zero — critical for synchronous systems where clock skew between loads must be minimised. The PLL can be bypassed if you need a clean fanout without frequency multiplication or deskew. Maximum output frequency is 133.3 MHz, which covers most 100 MHz and 133 MHz DDR memory, PCI, and Ethernet PHY reference clock trees. Supply range is 3V to 3.6V, nominally 3.3V. The industrial temperature grade (-40°C to 85°C) suits outdoor telecom gear, industrial controllers, and base-station timing cards that see temperature swings.
Package and mounting
Eight outputs from one input (ratio 1:8) means this single IC can replace a whole tree of unbuffered clock splitters, saving board area and reducing part count. The PLL bypass mode is handy during board bring-up: you can feed a clean external clock straight through without the PLL locking, then switch to PLL mode for production. The device is non-differential on both input and output, so it works with single-ended LVCMOS/LVTTL signals — no external balun or termination network needed. The 16-SOIC package is a standard footprint, easy to route on a two-layer board and hand-solderable for prototypes.
Lifecycle and compliance — active production, no RoHS worry
ROHS3 compliant means no lead, mercury, cadmium, or other restricted substances above threshold, so it passes EU and most global environmental regulations without an exemption.
Sourcing — quoted to order, availability confirmed at quote time
This line is sourced through independent distribution and quoted to order against an RFQ. Current pricing and availability are confirmed at the time of quotation — no automated stock count or lead-time number is published here because the spot market moves daily. Submit an RFQ or contact our desk for a real-time quote. The part is not restricted to minimum order quantities from the factory; small-lot (cut tape) and full-reel (tape and reel) options are both available per the package listing.