Dear Michael
TJA1120A datasheet is accessible as Secure Files.
Please Request Access: https://www.nxp.com/webapp-signup/docstoreReg
For better understanding the process kindly check FAQs:
https://www.nxp.com/support/support/secure-access-rights:SEC-ACCESS
new user guide:https://www.nxp.com/docs/en/user-guide/nxp-secure-access-rights-registration.pdf
migration guide:
https://www.nxp.com/docs/en/user-guide/nxp-docstore-migration-guide.pdf
During the online form submission you will be asked to provide valid NDA.
If your company does not have any yet please start here:
https://www.nxp.com/webapp-signup/ndaReqForm
Thank you. Have a nice day. Best regards
Pavla