MAX14770E Datasheet, PDF (15/16 Pages) Maxim Integrated Products – High-ESD Profibus RS-485 Transceiver

MAX14770E
High-ESD Profibus RS-485 Transceiver
R_C
50MI TO 100MI
R_D
330I
CHARGE-CURRENT-
LIMIT RESISTOR
HIGH-
VOLTAGE
DC
SOURCE
CS
150pF
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Figure 15. IEC61000-4-2 ESD Test Model
100%
90%
DEVICE
UNDER
TEST
10%
tR = 0.7ns
t
TO 1ns
30ns
60ns
Figure 16. IEC61000-4-2 ESD Generator Current Waveform
Typical PROFIBUS-DP Operating Circuit
VCC
RO
R
RE
SHUTDOWN
DE
DI
D
MAX14770E
GND
390I
0.1FF
A
PROFIBUS B LINE
220I
PROFIBUS A LINE
B
390I
0.1FF
390I
A
220I
B
390I
VCC
D
DI
DE
SHUTDOWN
RE
R
RO
MAX14770E
GND
ESD test model (Figure 15), the ESD-withstand voltage
measured to this standard is generally lower than that
measured using the HBM. Figure 16 shows the current
waveform for the Q10kV 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.
PROCESS: BiCMOS
Chip Information
Package Information
For the latest package outline information and land patterns, go
to www.maximintegrated.com/packages. Note that a “+,” “#,”
or “-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE
TYPE
8 SO
8 TDFN-EP
8 FMAX
PACKAGE
CODE
S8+4
T833+2
U8+1
OUTLINE
NO.
21-0041
21-0137
21-0036
LAND
PATTERN
NO.
90-0096
90-0059
90-0092
Maxim Integrated
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