Datasheet

MAX9940
Signal-Line Overvoltage Protector
for Low-Voltage Devices
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, R
INT_PULLUP
= 2kΩ to V
DD
, V
DD
= 3.3V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
FAULT RECOVERY TIME
MAX9940 toc10
TIME (100ns/div)
INT
500mV/div
EXT
5V/div
R
PULLUP
= 2kΩ
0
0
FAULT TURN-ON AND RECOVERY TIME
(SCHOTTKY DIODE FROM INT TO V
CC
)
MAX9940 toc11
TIME (40μs/div)
INT
1V/div
EXT
5V/div
R
PULLUP
= 2Ω
0
0
FAULT TURN-ON TIME
(SCHOTTKY DIODE FROM INT TO V
CC
)
MAX9940 toc12
TIME (100ns/div)
INT
1V/div
EXT
5V/div
0
0
0
50
100
150
200
250
300
2.0 3.02.5 3.5 4.0 4.5 5.0 5.5 6.0
V
THR
AND V
THF
vs. SUPPLY VOLTAGE
MAX9940 toc13
SUPPLY VOLTAGE (V)
VOLTAGE THRESHOD (mV)
V
THR
V
THF
0
100
50
200
150
250
300
-50 25 50-25 0 75 100 125
V
THR
AND V
THF
vs. TEMPERATURE
MAX9940 toc14
TEMPERATURE (°C)
VOLTAGE THRESHOLD (mV)
V
THR
V
THF
FAULT TURN-ON TIME
MAX9940 toc09
TIME (100ns/div)
INT
2V/div
EXT
5V/div
R
PULLUP
= 200Ω
0
0