Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
Applications Information
Ground
V+ and GND power the internal logic and logic-level trans-
lators. The logic-level translators convert the logic-level
inputs to V+ and V- to drive the gates of the internal FETs.
In this design, there is no galvanic connection inside the
MAX4708/MAX4709 between the analog signal paths and
GND. ESD-protection diodes connect A_ to V+ and V-.
Supply Current Reduction
Driving the logic signals rail-to-rail from 0 to +15V or
-15V to +15V reduces the current consumption from
370µA (typ) to 200µA (typ) (see the Electrical Charac-
teristics table, Power Supplies).
Power Supplies
The MAX4708/MAX4709 operate with bipolar supplies
between ±4.5V and ±20V. The V+ and V- supplies
need not be symmetrical, but V+ - V- cannot exceed
the 44V absolute maximum rating.
The MAX4708/MAX4709 operate from single supplies
between +9V and +36V when V- is connected to GND.
Chip Information
TRANSISTOR COUNT: 527
SUBSTRATE INTERNALLY CONNECTED TO V+
Package Information
For the latest package outline information, go to
www.maxim-ic.com/packages.
Pin Configurations/Functional Diagrams (continued)
NORMALLY OPEN SWITCH CONSTRUCTION
V+
HIGH
FAULT
P1
NO_
COM_
N1
LOW
FAULT
A_
ON
GND
MAX4708
MAX4709
V-
ESD DIODES
Figure 1. Functional Diagram
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