Functional Description
The CY2309 is a low-cost 3.3-V zero delay buffer designed to distribute high speed clocks and is available in a 16-pin SOIC or TSSOP package. The CY2305 is an 8-pin version of the CY2309. It accepts one reference input, and drives out five low skew clocks. The -1H versions of each device operate at up to 100-/133 MHz frequencies, and have higher drive than the -1 devices. All parts have on-chip PLLs which lock to an input clock on the REF pin. The PLL feedback is on-chip and is obtained from the CLKOUT pad.

FEATUREs
■ Not recommended for new designs. The CY2305C and CY2309C are form, fit, function compatible devices with improved specifications.
■ 10 MHz to 100/133 MHz operating range, compatible with CPU and PCI bus frequencies
■ Zero input-output propagation delay
■ 60-ps typical cycle-to-cycle jitter (high drive)
■ Multiple low skew outputs
    ❐ 85 ps typical output-to-output skew
    ❐ One input drives five outputs (CY2305)
    ❐ One input drives nine outputs, grouped as 4 + 4 + 1 (CY2309)
■ Compatible with Pentium-based systems
■ Test Mode to bypass phase-locked loop (PLL) (CY2309)
■ Packages:
    ❐ 8-pin, 150-mil SOIC package (CY2305)
    ❐ 16-pin 150-mil SOIC or 4.4-mm TSSOP (CY2309)
■ 3.3-V operation
■ Commercial and industrial temperature ranges