Philips HEF4532BT, HEF4532BPB, HEF4532BP, HEF4532BDB, HEF4532BD Datasheet

DATA SH EET

Product specification
File under Integrated Circuits, IC04

January 1995

INTEGRATED CIRCUITS

HEF4532B
MSI

8-input priority encoder

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

January 1995 2

Philips Semiconductors Product specification

8-input priority encoder

HEF4532B

MSI

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

out

) and an active HIGH
group select output (GS).
Data is accepted on inputs I0to I7. The binary code

corresponding to the highest priority input (I

0

to I7) which is
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

out

is HIGH when I0to I7are LOW and Einis HIGH.

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

out

)

LOW.

Fig.1 Functional diagram.

Fig.2 Pinning diagram.

PINNING

FAMILY DATA, IDDLIMITS category MSI

See Family Specifications

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

I

0

to I

7

priority inputs

E

in

enable input

E

out

enable output
GS group select output
O

0

to O

2

outputs

January 1995 3

Philips Semiconductors Product specification

8-input priority encoder

HEF4532B

MSI

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Fig.3 Logic diagram.