Philips hef4512b 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

HEF4512B
MSI

8-input multiplexer with 3-state
output

Product specification
File under Integrated Circuits, IC04

January 1995

Philips Semiconductors Product specification

8-input multiplexer with 3-state output

DESCRIPTION

The HEF4512B is an 8-input multiplexer with 8 binary
inputs (I0to I7), an enable input (E) and an output enable
input (EO). One of eight binary inputs is selected by select
inputs S0, S1and S2, and is routed to the output O. A HIGH
on EO causes O to assume a high impedance OFF-state,
regardless of other input conditions. This allows the output

HEF4512B

MSI

to interface directly with bus oriented systems (3-state).
When the active LOW enable (
output LOW provided EO is LOW. By proper manipulation
of the inputs, the device can provide any logic functions of
four variables. It cannot be used to multiplex analogue
signals.

E) is HIGH, it forces the

Fig.1 Functional diagram.

PINNING

, S

S

0,S1

EO output enable (active LOW)
E enable (active LOW)
I

to I

0

7

O multiplexer output

FAMILY DATA, I

See Family Specifications

select inputs

2

multiplexer inputs

DD

LIMITS category MSI

Fig.2 Pinning diagram.

HEF4512BP(N): 16-lead DIL; plastic

(SOT38-1)

HEF4512BD(F): 16-lead DIL; ceramic (cerdip)

(SOT74)

HEF4512BT(D): 16-lead SO; plastic

(SOT109-1)

( ): Package Designator North America

January 1995 2

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January 1995 3

Philips Semiconductors Product specification

8-input multiplexer with 3-state output

Fig.3 Logic diagram.

HEF4512B

MSI