Rainbow Electronics MAX13175E - Manual (Page 36)

MAX13171E/MAX13173E/MAX13175E
Multiprotocol, Pin-Selectable
Data Interface Chipset
36 ______________________________________________________________________________________
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 31a shows the Human Body Model, and Figure
31b 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 interest,
which is then discharged into the test device through a
1.5kΩ resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. However, it does
not specifically refer to integrated circuits. The
MAX13171E/MAX13173E/MAX13175E help equipment
designs to meet IEC 61000-4-2, without the need for
additional ESD-protection components.
The major difference between tests done using the
Human Body Model and IEC 61000-4-2 is higher peak
current in IEC 61000-4-2 because series resistance is
lower in the IEC 61000-4-2 model. Figure 31c shows
the IEC 61000-4-2 model, and Figure 31d shows the
current waveform for the IEC 61000-4-2 ESD Contact
Discharge test.
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR Cs
100pF
R C
1MΩ
R D
1500Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 31a. Human Body ESD Test Model
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR Cs
150pF
R C
50MΩ TO 100MΩ
R
D
330Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 31b. Human Body Current Waveform
I
P
100%
90%
36.8%
t RL
TIME
t DL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
0
AMPS
Figure 31c. ICE 61000-4-2 ESD Test Model
t r = 0.7ns TO 1ns
30ns
60ns
t
100%
90%
10%
I PEAK
I
Figure 31d. IEC 61000-4-2 ESD Generator Current Waveform