The SL74HC151 is identical in pinout to the LS/ALS151. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.
The device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Strobe pin must be at a low level for the selected data to appear at the outputs. If Strobe is high, the Y output is forced to a low level and the Y output is forced to a high level.

● Outputs Directly Interface to CMOS, NMOS, and TTL
● Operating Voltage Range: 2.0 to 6.0 V
● Low Input Current: 1.0 μA
● High Noise Immunity Characteristic of CMOS Devices