HEF4532BN 查看數據表（PDF） - Philips Electronics

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HEF4532BN

8-input priority encoder

Philips Electronics 

Philips Semiconductors

8-input priority encoder

Product specification

HEF4532B

MSI

DESCRIPTION

The HEF4532B is an 8-input priority encoder with eight

active HIGH priority inputs (I0 to I7), three active HIGH

outputs (O0 to O2), an active HIGH enable input (Ein), an

active HIGH enable output (Eout) and an active HIGH

group select output (GS).

Data is accepted on inputs I0 to I7. The binary code

corresponding to the highest priority input (I0 to I7) which is

HIGH, is generated on O0 to O2 if Ein is HIGH. Input I7 is

assigned the highest priority.

GS is HIGH when one or more priority inputs and Ein are

HIGH. Eout is HIGH when I0 to I7 are LOW and Ein is HIGH.

Ein, when LOW, forces all outputs (O0 to O2, GS, Eout)

LOW.

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

I0 to I7

Ein

Eout

GS

O0 to O2

priority inputs

enable input

enable output

group select output

outputs

FAMILY DATA, IDD LIMITS category MSI

See Family Specifications

Fig.2 Pinning diagram.

January 1995

2

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