This part is a kind of semiconductor called HEF4528B.

Function of this product has Dual monostable multivibrator.

Manufacturers : NXP

Image and pinout :

HEF4528B image and datasheet pinout



Some of the text within the PDF file :

HEF4528B Dual monostable multivibrator Rev. 7 22 November 2011 Product data sheet 1. General description The HEF4528B is a dual retriggerable-resetable monostable multivibrator. Each multivibrator has an active LOW input (nA), and active HIGH input (nB), an active LOW clear direct input (nCD), an output (nQ) and its complement (nQ), and two external timing component connecting pins (nCEXT, always connected to ground, and nREXT/CEXT). An external timing capacitor (CEXT) must be connected between nCEXT and nREXT/CEXT and an external resistor (REXT) must be connected between nREXT/CEXT and VDD. The output pulse duration is determined by the external timing components CEXT and REXT. A HIGH-to-LOW transition on nA when nB is LOW or a LOW-to-HIGH transition on nB when nA is HIGH produces [ ... ]


HEF4528B PDF Datasheet Download

2017/10/17 09:51 2017/10/17 09:51