HEF4538B Datasheet | Nexperia

Dual precision monostable multivibrator Rev. 11 - 19 October 2018 Product data sheet 1. General description The HEF4538B is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has an active LOW trigger/retrigger input (nA), an active HIGH trigger/retrigger input (nB), an overriding active LOW direct reset input (nCD), an output (nQ) and its plement (nQ), and two pins (nREXT/CEXT, and nCEXT, always connected to ground) for connecting the external timing ponents CEXT and REXT. Typical pulse width variation over the specified temperature range is ±0.2 %. The multivibrator may be triggered by either the positive or the negative edges of the input pulse...