DESCRIPTION

The HEF4512B is an 8-input multiplexer with 8 binary inputs (I0 to I7), an enable input (E) and an output enable input (EO). One of eight binary inputs is selected by select inputs S0, S1 and S2, and is routed to the output O. A HIGH on EO causes O to assume a high impedance OFF-state, regardless of other input conditions. This allows the output to interface directly with bus oriented systems (3-state). When the active LOW enable (E) is HIGH, it forces the output LOW provided EO is LOW. By proper manipulation of the inputs, the device can provide any logic functions of four variables. It cannot be used to multiplex analogue signals.

APPLICATION INFORMATION

Some examples of applications for the HEF4512B are:

• Signal gating

• Digital multiplexing

• Number sequence generation