Datasheet
MAX3205E/MAX3207E/MAX3208E
±15kV ESD Protection
ESD protection can be tested in various ways. The
MAX3205E/MAX3207E/MAX3208E are characterized
for protection to the following limits:
• ±15kV using the Human Body Model
• ±8kV using the Contact Discharge Method specified
in IEC 61000-4-2
• ±15kV using the IEC 61000-4-2 Air-Gap Discharge
Method
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model
Figure 3 shows the Human Body Model, and Figure 4
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 device through a
1.5kΩ resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. The MAX3205E/
MAX3207E/MAX3208E help users design equipment
that meets Level 4 of IEC 61000-4-2. The main differ-
ence 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 ESD test model (Figure 5), the ESD-
withstand voltage measured to this standard is general-
ly lower than that measured using the Human Body
Model. Figure 2 shows the current waveform for the
±8kV, IEC 61000-4-2 Level 4, ESD Contact Discharge
test. The Air-Gap Discharge test involves approaching
the device with a charged probe. The Contact
Discharge method connects the probe to the device
before the probe is energized.
Dual, Quad, and Hex High-Speed
Differential ESD-Protection ICs
6 _______________________________________________________________________________________
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
C
s
100pF
R
C
1MΩ
R
D
1.5kΩ
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 3. Human Body ESD Test Model
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
Figure 4. Human Body Model Current Waveform
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
Figure 5. IEC 61000-4-2 ESD Test Model