ETHERNET SWITCH CLOCK SOURCE DATASHEET ICS650-40A Description The ICS650-40A is a clock chip designed for use as a core clock in Ethernet Switch applications.
Using IDT’s patented Phase-Locked Loop (PLL) techniques, the device takes a 25 MHz crystal input and produces various output clock frequencies as listed in Output Select Table.
Features • Packaged in 16-pin TSSOP • Operating voltage of 3.
3 V • Low power consumption • Input frequency of 25 MHz • Low long-term jitter • Separate supply voltage for clock outputs (2.
5 / 3.
3 V clock outputs) • OE control capability Block Diagram VDD 2 VDDOA VDDOB S1:S0 2 Control Logic Phase Lock Loop X1/ICLK 25 MHz crystal or clock X2 Clock Buffer...

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