TEXAS INSTRUMENTS - CD54/74HC540 CD74HCT540 CD54/74HC541 CD54/74HCT541 High-Speed CMOS Logic Octal Buffer Line Drivers Three-State handbook
Datasheet
CD54HC540F3A is a non-inverting eight-channel buffer and line driver with three-state outputs and the capability to drive 15 LSTTL loads produced by Harris Semiconductor.