NX7551SA-16.000MHZ NX7551SA-24.576MHZ NX7551SA-25.000MHZ NX7551SA-44.545MHz NX7551SA-45.000MHz NX7551SA-85.32MHZ NX7563JB-BC-AZ NX7637BF-AA-AZ NX7639BB-AA-AZ NX7663JB-BC-AZ