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HEF4051B

8-channel analogue multiplexer/demultiplexer

Philips Electronics 

Philips Semiconductors

8-channel analogue multiplexer/demultiplexer

Product specification

HEF4051B

MSI

DESCRIPTION

The HEF4051B is an 8-channel

analogue multiplexer/demultiplexer

with three address inputs (A0 to A2),

an active LOW enable input (E), eight

independent inputs/outputs (Y0 to Y7)

and a common input/output (Z).

The device contains eight

bidirectional analogue switches, each

with one side connected to an

independent input/output (Y0 to Y7)

and the other side connected to a

common input/output (Z).

With E LOW, one of the eight

switches is selected (low impedance

ON-state) by A0 to A2. With E HIGH,

all switches are in the high impedance

OFF-state, independent of A0 to A2.

VDD and VSS are the supply voltage

connections for the digital control

inputs (A0 to A2, and E).

The VDD to VSS range is 3 to 15 V.

The analogue inputs/outputs (Y0 to

Y7, and Z) can swing between VDD as

a positive limit and VEE as a negative

limit. VDD−VEE may not exceed 15 V.

For operation as a digital

multiplexer/demultiplexer, VEE is

connected to VSS (typically ground).

Fig.1 Functional diagram.

January 1995

2

Fig.2 Pinning diagram.

HEF4051BP(N): 16-lead DIL; plastic

(SOT38-1)

HEF4051BD(F): 16-lead DIL; ceramic

(cerdip)

(SOT74)

HEF4051BT(D): 16-lead SO; plastic

(SOT109-1)

( ): Package Designator North America

PINNING

Y0 to Y7

A0 to A2

E

Z

independent inputs/outputs

address inputs

enable input (active LOW)

common input/output

FAMILY DATA, IDD LIMITS category MSI

See Family Specifications.

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