±15kV ESD-Protected, Single/Dual/Octal,
CMOS Switch Debouncers
MAX6816/MAX6817/MAX6818
R
C
1M
CHARGE-CURRENT
LIMIT RESISTOR
HIGH-
VOLTAGE
DC
SOURCE
R
D
1500Ω
DISCHARGE
RESISTANCE
DEVICE
UNDER
TEST
HIGH-
VOLTAGE
DC
SOURCE
R
C
50M to 100M
CHARGE CURRENT
LIMIT RESISTOR
R
D
330Ω
DISCHARGE
RESISTANCE
DEVICE
UNDER
TEST
Cs
100pF
STORAGE
CAPACITOR
Cs
150pF
STORAGE
CAPACITOR
Figure 6a. Human Body ESD Test Model
Figure 7a. IEC1000-4-2 ESD Test Model
I
I
P
100%
90%
AMPERES
I
PEAK
36.8%
10%
0
0
t
RL
TIME
t
DL
CURRENT WAVEFORM
10%
Ir
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
100%
90%
Figure 6b. Human Body Current Waveform
t r = 0.7ns to 1ns
t
30ns
60ns
damage. The ESD structures withstand high ESD in all
states: normal operation, shutdown, and powered
down. After an ESD event, the MAX6816/MAX6817/
MAX6818 keep working without latchup, whereas other
solutions can latch and must be powered down to
remove latchup.
ESD protection can be tested in various ways; these
products are characterized for protection to the follow-
ing limits:
1) ±15kV using the Human Body Model
2) ±8kV using the Contact-Discharge method specified
in IEC1000-4-2
3) ±15kV using IEC1000-4-2’s Air-Gap method.
Figure 7b. IEC1000-4-2 ESD Generator Current Waveform
Human Body Model
Figure 6a shows the Human Body Model and Figure 6b
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est, which is then discharged into the test device
through a 1.5kΩ resistor.
IEC1000-4-2
The IEC1000-4-2 standard covers ESD testing and per-
formance of finished equipment; it does not specifically
refer to integrated circuits. The MAX6816/
MAX6817/MAX6818 help you design equipment that
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.
6
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