It takes a 4.5V to 5.5V supply rail and delivers 32mA source / 64mA sink per output, which is enough drive for heavily loaded parallel buses in industrial control, telecom backplanes, and test equipment.
Supply voltage and drive strength — the fit check
This part runs on 5V only — the 4.5V to 5.5V range means it will not work on a 3.3V or 1.8V bus without a level translator. The 32mA/64mA output current is the headline number for fan-out: at 5V, each output can drive multiple TTL loads or a long trace on a backplane. If your design needs higher drive or a transceiver function (bidirectional), the 74ABT2245 or 74LVTH16245 families are worth a look, but they change the pinout and logic function.