HEF4512B

Pinout




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 ) of HEF4512B 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. HEF4512B cannot be used to multiplex analogue signals.