The two are product variants. The MAX-8Q-0 (672-MAX-8Q-0TR-ND) is the crystal variant while the MAX-8Q (MAX-8Q-ND) is the TCXO variant.
See page 11 of the datasheet for more information.
Copyright © 1995-2020, Digi-Key Electronics. | All Rights Reserved. | Terms & Conditions | Privacy Statement
701 Brooks Avenue South, Thief River Falls, MN 56701 USA