January 1995

2

Philips Semiconductors

Product specification

1-of-10 decoder

HEF4028B

MSI

DESCRIPTION

The HEF4028B is a 4-bit BCD to 1-of-10 active HIGH

causes the selected output to be HIGH, the other nine will

be LOW. If desired, the device may be used as a 1-of-8

decoder with enable; 3-bit octal inputs are applied to inputs

becomes an active LOW enable, forcing the selected

The outputs are fully buffered for best performance.

Fig.1 Functional diagram.

Fig.2 Pinning diagram.

PINNING

See Family Specifications

HEF4028BP(N):

16-lead DIL; plastic

(SOT38-1)

HEF4028BD(F):

16-lead DIL; ceramic (cerdip)

(SOT74)

HEF4028BT(D):

16-lead SO; plastic

(SOT109-1)

( ): Package Designator North America

address inputs, 1-2-4-8 BCD

outputs (active HIGH)