Hi,
I need   junction to case thermal resistance of 

SN74AHC1G126DBVR
SN74AVC4T774PW
SN74AVC8T245PW
SN74AVCA164245GR

LP2980AIM5-5.0
LMH1981MT
LMP7711MK/NOPB

to carry out thermal analysis  as i have used this component in my board. It is not mentioned in datasheet.

Thanks,
Yoga