SN74AHC08-EP: junction to board resistance (R_jb)

Part Number: SN74AHC08-EP

Tool/software:

Hi Experts,

Do you have the junction to board resistance (R_jb) for SN74AHC08MPWREP. I was only able to find junction to ambient air resistance (R_ja) on the part datasheet.

Regards,

Marvin