No and no.The 74XX familly has outputs that reach almost always the HIGH level of Vcc and have a maximum current output of 40mA.
My bad. Seems I have to make a serious revision of the 74XX family characteristics.No and no.
The minimum output high voltage of old TTL is only 2.4V.
The minimum output high current is only 40uA and the max allowed output low current is 16mA.
by Aaron Carman
by Duane Benson
by Duane Benson