Datasheet

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
following limits:
1) ±15kV using the Human Body Model
2) ±8kV using the Contact-Discharge method specied
in IEC 1000-4-2
3) ±15kV using IEC 1000-4-2’s Air-Gap method.
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.
Human Body Model
Figure 6a shows the Human Body Model and Figure
6b shows the current waveform it generates when
discharged into a low impedance. This model consists
of a 100pF capacitor charged to the ESD voltage of
interest, which is then discharged into the test device
through a 1.5kW resistor.
IEC 1000-4-2
The IEC 1000-4-2 standard covers ESD testing
and performance of finished equipment; it does not
specifically refer to integrated circuits. The MAX6816/
MAX6817/MAX6818 help you design equipment that
Figure 7b. IEC 1000-4-2 ESD Generator Current Waveform
Figure 7a. IEC 1000-4-2 ESD Test Model
Figure 6b. Human Body Current Waveform
Figure 6a. Human Body ESD Test Model
t
r
= 0.7ns to 1ns
30ns
60ns
t
100%
90%
10%
I
PEAK
I
CHARGE CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
C
s
150pF
R
C
50MΩ to 100MΩ R
D
330Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
I
P
100%
90%
36.8%
t
RL
TIME
t
DL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
I
r
10%
0
0
AMPERES
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
C
s
100pF
R
C
1MΩ R
D
1500Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
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Maxim Integrated │ 6
MAX6816/MAX6817/
MAX6818
±15kV ESD-Protected, Single/Dual/Octal,
CMOS Switch Debouncers