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4066 View Datasheet(PDF) - Maxim Integrated

Part Name
Description
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4066 Datasheet PDF : 12 Pages
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Low-Cost, Low-Voltage, Quad, SPST,
CMOS Analog Switches
______________________________________________________________Pin Description
PIN
DIP/SO
QSOP
NAME
1, 3, 8, 11 1, 4, 9, 13 NO1–NO4
2, 4, 9, 10 2, 5, 10, 12 COM1–COM4
3, 11
N.C.
13, 5, 6, 12 15, 6, 7, 14
IN1–IN4
7
8
GND
14
16
V+
FUNCTION
Analog Switch Normally Open Terminal (bidirectional)
Analog Switch Common Terminal (bidirectional)
Not internally connected
Logic Control Inputs
Ground
Positive Supply Voltage
__________Applications Information
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
POSITIVE SUPPLY
mum ratings, because stresses beyond the listed rat-
ings may cause permanent damage to the devices.
Always sequence V+ on first, followed by the logic
MAX4066
V+
MAX4066A
inputs. If power-supply sequencing is not possible, add
two small signal diodes in series with supply pins for
overvoltage protection (Figure 1). Adding diodes
reduces the analog signal range to 1V below V+ and
NO
COM
1V above GND, but low switch resistance and low leak-
age characteristics are unaffected. Device operation is
unchanged, and the difference between V+ and GND
Vg
should not exceed 17V.
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
_______________________________________________________________________________________ 7
 

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