Crystal suggested in TUSB2046B datasheet (Fox electronics HC49U-6.00MHz 30\50\0-70\20) is obsolete and its direct replacement (FC4UTCBMC6.0 ) is classified as custom, in addition I need SMT crystal. Can I Use FQ7050B-6.000?. If so, there is any change in capacitors and resistor values associated with this new crystal?. I attach Crystal DatasheetFox_FQ7050.pdf