CY23EP09

The CY23EP09 is a 2.5V or 3.3V zero delay buffer designed to distribute high-speed clocks and is available in a 16-pin SOIC or TSSOP package. The -1H version operates up to 220 (200) MHz frequencies at 3.3V (2.5V), and has higher drive than the -1 devices. All parts have on-chip PLLs that lock to an input clock on the REF pin. The PLL feedback is on-chip and is obtained from the CLKOUT pad.

There are two banks of four outputs each CY23EP09, which can be controlled by the Select inputs as shown in the "Select Input Decoding" table on page 2. If all output clocks are not required, BankB can be three-stated. The select inputs also allow the input clock to be directly applied to the outputs for chip and system testing purposes.

The PLL enters a power-down mode CY23EP09 when there are no rising edges on the REF input (less than ~2 MHz). In this state, the outputs are three-stated and the PLL is turned off, resulting in less than 25 A of current draw.

In the special case when S2:S1 is 1:0, the PLL is bypassed and REF is output from DC to the maximum allowable frequency. The part behaves like a non-zero delay buffer in this mode, and the outputs are not tri-stated.

The CY23EP09 is available in different configurations, as shown in the Ordering Information table. The CY23EP09-1 is the base part. The CY23EP09-1H is the high-drive version of the -1, and its rise and fall times are much faster than the -1.

These parts are not intended for 5V input-tolerant applications