CD74HC157E | Texas Instruments

High Speed CMOS Logic Quad 2-Input Multiplexers, CD74HC157E, Texas Instruments

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.

Features

• Common Select Inputs
• Separate Enable Inputs
• Balanced Propagation Delay and Transition Times
• Buffered inputs and Outputs