The Texas Instruments CD74HC541E is an 8-channel, non-inverting buffer with 3-state outputs, operating from 2V to 6V. It is suitable for various logic applications.
The On Semiconductor MC74HC541ADTR2G is an octal 3-state noninverting buffer/line driver/line receiver. It operates within a voltage range of 2V to 6V.
The Texas Instruments CD74HC541M is an octal buffer and line driver with 3-state outputs. It operates from 2V to 6V and is suitable for a wide temperature range.