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DA9171A.000
July 31, 1997
MAS9171A
OCTAL PORT PROTECTON
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Parallel In, Parallel Out
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High Voltage Inputs
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Automotive
DESCRIPTION
The MAS9171A is an eight channel protection
circuit for microprocessors in automotive
applications. All inputs are protected against energy
rich pulses according to DIN40839/ISO7637.
Internal analog filters and suitable input threshold
voltages provide the functionality within a noise
spectrum of 150 kHz up to 1 GHz without need of
external filter components. The MAS9171A is
optimized for low current consumption.
FEATURES
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8 digital channels
Supply voltage 3.3 V/5 V
Low supply current
High voltage inputs
Internal analog filter
-40°C to +125°C
SO-18 package
APPLICATION
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Replacement of protection circuitry in car
electronics and industrial bus systems
BLOCK DIAGRAM
VDD
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
OUT1
OUT2
OUT3
OUT4
PROTECT
FILTER
COMP
OUT5
OUT6
OUT7
OUT8
GND
1
MAS [ MICRO ANALOG SYSTEMS ]
