HEF4044B

The HEF4044B is a quadruple R/S latch with 3-state outputs with a common output enable input (EO). Each latch has an active LOW set input (S₀ to S₃), an active LOW reset input (R₀ to R₃) and an active HIGH 3-state output (O₀ to O₃).

When EO is HIGH, the state of the latch output (On) can be determined from the function table below. When EO is LOW, the HEF4044B latch outputs are in the high impedance OFF-state. EO does not affect the state of the latch.

The high impedance off-state feature allows common busing of the outputs.