DATA SH EET
Product specification
File under Integrated Circuits, IC04 January 1995
INTEGRATED CIRCUITS
HEF4051B
MSI
8-channel analogue
multiplexer/demultiplexer
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-channel analogue multiplexer/demultiplexer HEF4051B
MSI
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 (Y0to 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 A0to A2. With E HIGH,
all switches are in the high impedance
OFF-state, independent of A0to A2.
VDD and VSS are the supply voltage
connections for the digital control
inputs (A0to A2, and E).
The VDD to VSS range is 3 to 15 V.
The analogue inputs/outputs (Y0to
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.
PINNING
FAMILY DATA, IDD LIMITS category MSI
See Family Specifications.
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
Y0to Y7independent inputs/outputs
A0to A2address inputs
E enable input (active LOW)
Z common input/output
Fig.2 Pinning diagram.
January 1995 3
Philips Semiconductors Product specification
8-channel analogue multiplexer/demultiplexer HEF4051B
MSI
FUNCTION TABLE
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)
Note
1. To avoid drawing VDD current out of terminal Z, when switch current flows into terminals Y, the voltage drop across
the bidirectional switch must not exceed 0,4 V. If the switch current flows into terminal Z, no VDD current 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 VDD or VEE.
INPUTS CHANNEL
ON
EA
2A
1A
0
LLLL Y
0
−Z
LLLH Y
1
−Z
LLHL Y
2
−Z
LLHH Y
3
−Z
LHLL Y
4
−Z
LHLH Y
5
−Z
LHHL Y
6
−Z
LHHH Y
7
−Z
H X X X none
Supply voltage (with reference to VDD)V
EE −18 to +0,5 V
Fig.3 Schematic diagram (one switch).
January 1995 4
Philips Semiconductors Product specification
8-channel analogue multiplexer/demultiplexer HEF4051B
MSI
Fig.4 Logic diagram.
January 1995 5
Philips Semiconductors Product specification
8-channel analogue multiplexer/demultiplexer HEF4051B
MSI
DC CHARACTERISTICS
Tamb =25°C
V
DD−VEE
VSYMBOL TYP. MAX. CONDITIONS
5 350 2500 ΩVis = 0 to VDD−VEE
see Fig.6
ON resistance 10 RON 80 245 Ω
15 60 175 Ω
5 115 340 ΩVis =0
see Fig.6
ON resistance 10 RON 50 160 Ω
15 40 115 Ω
5 120 365 ΩVis =V
DD−VEE
see Fig.6
ON resistance 10 RON 65 200 Ω
15 50 155 Ω
‘∆’ ON resistance 5 25 −Ω V
is = 0 to VDD−VEE
see Fig.6
between any two 10 ∆RON 10 −Ω
channels 15 5 −Ω
OFF-state leakage 5 −−nA E at VDD
VSS =V
EE
current, all 10 IOZZ −−nA
channels OFF 15 −1000 nA
OFF-state leakage 5 −−nA E at VSS
VSS =V
EE
current, any 10 IOZY −−nA
channel 15 −200 nA
Fig.5 Operating area as a function of the supply voltages.
January 1995 6
Philips Semiconductors Product specification
8-channel analogue multiplexer/demultiplexer HEF4051B
MSI
Fig.6 Test set-up for measuring RON.
Fig.7 Typical RON as a function of input voltage.
Iis = 200 µA
VSS = VEE = 0 V
January 1995 7
Philips Semiconductors Product specification
8-channel analogue multiplexer/demultiplexer HEF4051B
MSI
AC CHARACTERISTICS
VEE =V
SS = 0 V; Tamb =25°C; input transition times ≤20 ns
AC CHARACTERISTICS
VEE =V
SS = 0 V; Tamb =25°C; input transition times ≤20 ns
VDD
VTYPICAL FORMULA FOR P (µW)
Dynamic power 5 1 000 fi+∑(foCL)×VDD2where
dissipation per 10 5 500 fi+∑(foCL)×VDD2fi= input freq. (MHz)
package (P) 15 15 000 fi+∑(foCL)×VDD2fo= output freq. (MHz)
CL= load capacitance (pF)
∑(foCL) = sum of outputs
VDD = supply voltage (V)
VDD
VSYMBOL TYP. MAX.
Propagation delays
Vis →Vos 51530ns
note 1HIGH to LOW 10 tPHL 510ns
15 5 10 ns
51530ns
note 1LOW to HIGH 10 tPLH 510ns
15 5 10 ns
An→Vos 5 150 300 ns note 2HIGH to LOW 10 tPHL 60 120 ns
15 45 90 ns
5 150 300 ns note 2LOW to HIGH 10 tPLH 65 130 ns
15 45 90 ns
Output disable times
E→Vos 5 120 240 ns note 3HIGH 10 tPHZ 90 180 ns
15 85 170 ns
5 145 290 ns note 3LOW 10 tPLZ 120 240 ns
15 115 230 ns
Output enable times
E→Vos 5 140 280 ns note 3HIGH 10 tPZH 55 110 ns
15 40 80 ns
5 140 280 ns note 3LOW 10 tPZL 55 110 ns
15 40 80 ns
January 1995 8
Philips Semiconductors Product specification
8-channel analogue multiplexer/demultiplexer HEF4051B
MSI
Notes
Vis is the input voltage at a Y or Z terminal, whichever is assigned as input.
Vos is the output voltage at a Y or Z terminal, whichever is assigned as output.
1. RL= 10 kΩto VEE; CL= 50 pF to VEE;E=V
SS; Vis =V
DD (square-wave); see Fig.8.
2. RL= 10 kΩ; CL= 50 pF to VEE;E=V
SS; An=V
DD (square-wave); Vis =V
DD and RLto VEE for tPLH; Vis =V
EE and
RLto VDD for tPHL; see Fig.8.
3. RL= 10 kΩ; CL= 50 pF to VEE;E=V
DD (square-wave);
Vis =V
DD and RLto VEE for tPHZ and tPZH;
Vis =V
EE and RLto VDD for tPLZ and tPZL; see Fig.8.
4. RL= 10 kΩ; CL= 15 pF; channel ON; Vis =1⁄2VDD (p-p) (sine-wave, symmetrical about 1⁄2VDD);
fis = 1 kHz; seeFig.9.
5. RL=1 kΩ; Vis =1⁄2VDD (p-p) (sine-wave, symmetrical about 1⁄2VDD);
6. RL= 10 kΩto VEE; CL= 15 pF to VEE; E or An=V
DD (square-wave); crosstalk is Vos(peak
value); see Fig.8.
7. RL=1 kΩ; CL= 5 pF; channel OFF; Vis =1⁄2VDD (p-p) (sine-wave, symmetrical about 1⁄2VDD);
8. RL=1 kΩ; CL= 5 pF; channel ON; Vis =1⁄2VDD (p-p) (sine-wave, symmetrical about 1⁄2VDD);
Distortion, sine-wave 5 0,25 % note 4response 10 0,04 %
15 0,04 %
Crosstalk between 5 −MHz note 5any two channels 10 1 MHz
15 −MHz
Crosstalk; enable 5 −mV note 6or address input 10 50 mV
to output 15 −mV
OFF-state 5 −MHz note 7feed-through 10 1 MHz
15 −MHz
ON-state frequency 5 13 MHz note 8response 10 40 MHz
15 70 MHz
VDD
VSYMBOL TYP. MAX.
20 log Vos
Vis
--------- 50 dB; see Fig. 10.–=
20 log Vos
Vis
--------- 50 dB; see Fig. 9.–=
20 log Vos
Vis
--------- 3 dB; see Fig. 9.–=
January 1995 9
Philips Semiconductors Product specification
8-channel analogue multiplexer/demultiplexer HEF4051B
MSI
Fig.8 Fig.9
APPLICATION INFORMATION
Some examples of applications for the HEF4051B are:
•Analogue multiplexing and demultiplexing.
•Digital multiplexing and demultiplexing.
•Signal gating.
NOTE
If break before make is needed, then it is necessary to use the enable input.
Fig.10
(a) (b)
