CD74HC157E

LOGIC, MUX 2-IN CMOS LOGIC HS, 16DIP.

The CD74HC157E is a 2-input high speed CMOS Quad Multiplexer which select four bits of data from two sources under the control of a common Select input (S). The Enable input (E\) is active low. When (E\) is high, all of the outputs in the 158, the inverting type, (1Y\-4Y\) are forced high and in the 157, the non-inverting type, all of the outputs (1Y\-4Y\) are forced low, regardless of all other input conditions. Moving data from two groups of registers to four common output busses is a common use of these devices. The state of the Select input determines the particular register from which the data comes. They can also be used as function generators.