TECHNICAL DATA
IW4051B
Analog Multiplexer Demultiplexer
High-Performance Silicon-Gate CMOS
The IW4051B analog multiplexer/demultiplexer is digitally
controlled analog switches having low ON impedance and very low
OFF leakage current. Control of analog signals up to 20V peak-to-
peak can be achieved by digital signal amplitudes of 4.5 to 20V (if V
CC
- GND = 3V, a V
CC
- V
EE
of up to 13 V can be controlled; for V
CC
-
V
EE
level differences above 13V a V
CC
- GND of at least 4.5V is
required).
These multiplexer circuits dissipate extremely low quiescent power
over the full V
CC
-GND and V
CC
- V
EE
supply-voltage ranges,
independent of the logic state of the control signals. When a logic
鈥?鈥漣s present at the ENABLE input terminal all channels are off.
The IW4051B is a single 8-channel multiplexer having three binary
control inputs, A,B and C, and an ENABLE input. The three binary
signals select 1 of 8 channels to be turned on, and connect one of the 8
inputs to the output.
鈥?/div>
Operating Voltage Range: 3.0 to 18 V
鈥?/div>
Maximum input current of 1
碌A(chǔ)
at 18 V over full package-
temperature range; 100 nA at 18 V and 25擄C
鈥?/div>
Noise margin (over full package temperature range):
1.0 V min @ 5.0 V supply
2.0 V min @ 10.0 V supply
2.5 V min @ 15.0 V supply
ORDERING INFORMATION
IW4051BN Plastic
IW4051BDW SOIC
T
A
= -55擄 to 125擄 C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
Single-Pole, 8-Position Plus Common Off
FUNCTION TABLE
Control Inputs
Enable
C
L
L
L
L
L
PIN 16 =V
CC
PIN 7 = V
EE
PIN 8 = GND
L
L
L
L
L
L
L
H
H
H
H
Select
B
L
L
H
H
L
L
H
H
X
A
L
H
L
H
L
H
L
H
X
X0
X1
X2
X3
X4
X5
X6
X7
None
ON
Channels
H
X
X = don鈥檛 care
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