Philips hef4051b 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

HEF4051B
MSI

8-channel analogue
multiplexer/demultiplexer

Product specification
File under Integrated Circuits, IC04

January 1995

Philips Semiconductors Product specification

8-channel analogue multiplexer/demultiplexer

DESCRIPTION

The HEF4051B is an 8-channel
analogue multiplexer/demultiplexer
with three address inputs (A0to A2),
an active LOW enable input (E), eight
independent inputs/outputs (Y0to Y7)
and a common input/output (Z).

The device contains eight
bidirectional analogue switches, each
with one side connected to an
independent input/output (Y

to Y7)

0

and the other side connected to a
common input/output (Z).

E LOW, one of the eight

With
switches is selected (low impedance
ON-state) by A0to A2. With E HIGH,
all switches are in the high impedance
OFF-state, independent of A0to A2.

VDDand VSSare the supply voltage
connections for the digital control
inputs (A0to A2, and E).
The VDDto VSSrange is 3 to 15 V.

HEF4051B

MSI

The analogue inputs/outputs (Y0to
Y7, and Z) can swing between VDDas
a positive limit and VEEas a negative
limit. VDD−VEEmay not exceed 15 V.

For operation as a digital
multiplexer/demultiplexer, VEEis
connected to VSS(typically ground).

Fig.1 Functional diagram.

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

Y

to Y

0

7

A

to A

0

2

independent inputs/outputs

address inputs
E enable input (active LOW)
Z common input/output

FAMILY DATA, I

LIMITS category MSI

DD

See Family Specifications.

January 1995 2

Philips Semiconductors Product specification

8-channel analogue multiplexer/demultiplexer

Fig.3 Schematic diagram (one switch).

HEF4051B

MSI

FUNCTION TABLE

INPUTS CHANNEL

EA

2

A

1

A

0

LLLL Y
LLLH Y
LLHL Y
LLHH Y
LHLL Y
LHLH Y
LHHL Y
LHHH Y

ON

−Z

0

−Z

1

−Z

2

−Z

3

−Z

4

−Z

5

−Z

6

−Z

7

H X X X none

Notes

1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

Supply voltage (with reference to V

)V

DD

EE

−18 to + 0,5 V

Note

1. To avoid drawing V

current out of terminal Z, when switch current flows into terminals Y, the voltage drop across

DD

the bidirectional switch must not exceed 0,4 V. If the switch current flows into terminal Z, no VDDcurrent will flow out
of terminals Y, in this case there is no limit for the voltage drop across the switch, but the voltages at Y and Z may
not exceed VDDor VEE.

January 1995 3