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Maxim clock generator has 8kHz reference-clock input

Posted: 30 Aug 2004 ?? ?Print Version ?Bookmark and Share

Keywords:maxim integrated products? clock generator? max9486?

Maxim Integrated Products unveiled a high-performance clock generator with an 8kHz reference-clock input. Target applications include ADSL/VDSL central-office line cards, T1/E1, T3/E3 and telecom network systems.

The MAX9486 uses a 17.664MHz crystal and an 8kHz input reference clock to generate six identical, buffered LVTTL outputs at 35.328MHz, which are all synchronized with the 8kHz input clock. It has an integrated 17.644MHz VCXO with a wide pulling range so it can track

the input reference by 200ppm, and provides a low-jitter 8kHz clock output that is used as a reference clock for other parts of the system. Additionally, the new clock generator can automatically detect the absence of the 8kHz reference and lock the output CLK to 35.328MHz with an accuracy of 25ppm.

As with the other ICs in this family of synthesizers, the MAX9486 also takes the 8kHz input clock and synchronizes it with the multiple buffered outputs over a wide range of frequencies from 15MHz to 78MHz.

Operating from a single supply and over the extended temperature range, the MAX9486 is available in a 24-pin TSSOP package. Prices start at $6.14 (1,000-up, FOB USA).

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