Texas Instruments SN74LVC1T45DRLR is a part with limited availability, so it may help to find some alternatives with similar functionality. Unfortunately there isn’t a perfect cross-reference, so the options require you to compare the pros and cons of each for your particular application.
The options listed in the following link match the other specifications well, but are offered in various device packages that differ from the orignal: https://www.digikey.com/short/8jwhh19h
The TechForum Cross Reference category is for parts that Digi-Key does not sell or parts that have gone obsolete. Our Engineers and Techs have reviewed the specifications for these parts and made a recommendation for a replacement. Please review the suggested part to ensure it will work for your application.