January 1995

2

Philips Semiconductors

Product specification

Triple 3-input NOR gate

HEF4025B

gates

DESCRIPTION

The HEF4025B provides the positive triple 3-input NOR

function. The outputs are fully buffered for highest noise

immunity and pattern insensitivity of output impedance.

Fig.1 Functional diagram.

See Family Specifications

HEF4025BP(N):

14-lead DIL; plastic

(SOT27-1)

HEF4025BD(F):

14-lead DIL; ceramic (cerdip)

(SOT73)

HEF4025BT(D):

14-lead SO; plastic

(SOT108-1)

( ): Package Designator North America

Fig.2 Pinning diagram.

Fig.3 Logic diagram (one gate).