Ok, I found some ESD information for this part in this document: https://www.electro-tech-online.com/custompdfs/2007/12/szza036b.pdf With an additional series 1k resistor on the input lines, the internal clamp diodes should be good enough protection.
"The TI logic families with clamp diodes in the inputs are: AC, ACT, AHC, AHCT, ALB, ALS, ALVC, AS, F, (CD)FCT, HC, HCT, HSTL, LS, PCA, PCF, S, SSTL, and TTL. The TI logic families without clamp diodes in the inputs are: ABT, ABTE, ALS, ALVT, AUC, AVC, BCT, FB, GTLP, GTL, LS, LV, LVC, LVCZ, LVT, (CY)FCT, SSTV, and VME."
"The TI logic families with clamp diodes in the inputs are: AC, ACT, AHC, AHCT, ALB, ALS, ALVC, AS, F, (CD)FCT, HC, HCT, HSTL, LS, PCA, PCF, S, SSTL, and TTL. The TI logic families without clamp diodes in the inputs are: ABT, ABTE, ALS, ALVT, AUC, AVC, BCT, FB, GTLP, GTL, LS, LV, LVC, LVCZ, LVT, (CY)FCT, SSTV, and VME."