Philips hef4532b DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

For a complete data sheet, please also download:

•The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC

•The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC

HEF4532B
MSI

8-input priority encoder

Product specification
File under Integrated Circuits, IC04

January 1995

Philips Semiconductors Product specification

8-input priority encoder

DESCRIPTION

The HEF4532B is an 8-input priority encoder with eight
active HIGH priority inputs (I0to I7), three active HIGH
outputs (O0to O2), an active HIGH enable input (Ein), an
active HIGH enable output (E
group select output (GS).
Data is accepted on inputs I0to I7. The binary code

) and an active HIGH

out

HEF4532B

MSI

corresponding to the highest priority input (I
HIGH, is generated on O0to O2if Einis HIGH. Input I7is
assigned the highest priority.
GS is HIGH when one or more priority inputs and Einare
HIGH. E

is HIGH when I0to I7are LOW and Einis HIGH.

out

Ein, when LOW, forces all outputs (O0to O2, GS, E
LOW.

to I7) which is

0

out

)

Fig.1 Functional diagram.

HEF4532BP(N): 16-lead DIL; plastic

(SOT38-1)

HEF4532BD(F): 16-lead DIL; ceramic (cerdip)

(SOT74)

HEF4532BT(D): 16-lead SO; plastic

(SOT109-1)

( ): Package Designator North America

PINNING

to I

I

0

7

E

in

E

out

priority inputs
enable input

enable output
GS group select output
O

0

to O

2

outputs

FAMILY DATA, IDDLIMITS category MSI

See Family Specifications

Fig.2 Pinning diagram.

January 1995 2

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January 1995 3

Philips Semiconductors Product specification

8-input priority encoder

Fig.3 Logic diagram.

HEF4532B

MSI