The MAX9489 clock generator provides multiple clock outputs, ideal for network routers. The MAX9489 provides 15 buffered clock outputs, each independently programmable to any of 10 individual frequencies: 133MHz, 125MHz, 100MHz, 83MHz, 80MHz, 66MHz, 62.5MHz, 50MHz, 33MHz, or 25MHz. All of the outputs are single-ended LVCMOS. The MAX9489 is controlled through its I²C interface.
At power-up, the frequency of output CLK1 is set by the tri-level input SEL to 100MHz, 125MHz, or 133MHz, while all other outputs are logic low. All outputs are then programmable to any available frequency through the I²C interface. Additionally, all output frequencies are adjustable up or down, by a margin of 5% or 10%, through the I²C interface.
The MAX9489 requires a 25MHz reference that can be either a crystal or an external clock signal. The MAX9489 requires a +3.0V to +3.6V power supply and is available in a 32-pin thin QFN package with an exposed pad for heat removal.
Key Features
Applications/Uses
15 LVCMOS Outputs with 10 Independently Programmable Frequencies: 133MHz, 125MHz, 100MHz, 83MHz, 80MHz, 66MHz, 62.5MHz, 50MHz, 33MHz, and 25MHz
25MHz Crystal or Clock Input Reference
Programmable Through I²C Interface
Programmable Output Frequency Margin of ±5% or ±10%
Pin-Selectable Power-Up Frequency for CLK1 Output: 100MHz, 125MHz, or 133MHz
Low Output Period Jitter: < 48psRMS
Output-to-Output Skew < 200ps
Available in 32-Lead, 5mm x 5mm x 0.8mm, Thin QFN Package
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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