HEF4528BD_1084417

The HEF4528B is a dual retriggerable-resettable onostable multivibrator. Each HEF4528B multivibrator has an active OW input (I₀), and active HIGH input (I₁), an active LOW lear direct input (C_D), an output (O) and its complement O), and two pins for connecting the external timing omponents (C_TC⁽¹⁾, R_CTC).

An external timing capacitor (C_t ) in HEF4528B must be connected etween C_TC and R_CTC and an external resistor (R_t) must e connected between RCTC and V_DD. The duration of the output pulse is determined by the external timing omponents C_t and R_t.A HIGH to LOW transition on I0 when I1 is LOW or a LOW o HIGH transition on I1 when I0 is HIGH produces a ositive pulse (LOW-HIGH-LOW) and O and a negative ulse (HIGH-LOW-HIGH) on O if the C_D is HIGH. A LOW on C_D forces O LOW, O HIGH and inhibits any further ulses until C_D is HIGH.