MAX13174E Datasheet, PDF (11/13 Pages) Maxim Integrated Products – +5V Multiprotocol, Pin-Selectable Cable Terminator

+5V Multiprotocol, Pin-Selectable
Cable Terminator
A′
A
R1
MAX13174E
52Ω
R5
55kΩ
R8
5kΩ
R6
11kΩ
MAX13170E
RECEIVER
S1
S2
R3
124Ω
R2
52Ω
B′
S3
+-
1.4V
R7
11kΩ
R4
B
55kΩ
S1
C′
S2
GND
Figure 10. V.28 Termination and Internal Resistance Networks
have extra protection against static electricity. Maxim’s
engineers have developed state-of-the-art structures to
protect these pins against an ESD of ±15kV (Human
Body Model) without damage. The ESD structures with-
stand high ESD in all states: normal operation, shut-
down, and powered down. After an ESD event, the
MAX13174E keeps working without latchup or damage.
ESD protection can be tested in various ways. The
Electrical Characteristics table shows the limits, and
each device is characterized for protection to the fol-
lowing methods:
• Human Body Model
• Contact Method specified in IEC 61000-4-2
• Air Gap Discharge Method specified in IEC 61000-4-2
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 12a shows the Human Body Model, and Figure
12b 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
the performance of finished equipment. However, it
does not specifically refer to integrated circuits. The
MAX13174E helps equipment designs to meet IEC
61000-4-2 without the need for additional ESD-protec-
tion 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 12c shows
the IEC 61000-4-2 model, and Figure 12d shows the
current waveform for the IEC 61000-4-2 ESD Contact
Discharge test.
Compliance Testing
A European Standard EN 45001 test report for the
MAX13170E, MAX13172E, and MAX13174E chipset will
be available from Maxim upon completion of testing.
Contact Maxim Quality Assurance for a copy of the report.
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