Datasheet

15Maxim Integrated
High-ESD Profibus RS-485 Transceiver
MAX14770E
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.
Chip Information
PROCESS: BiCMOS
Figure 15. IEC61000-4-2 ESD Test Model
Figure 16. IEC61000-4-2 ESD Generator Current Waveform
Typical PROFIBUS-DP Operating Circuit
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.
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
C
S
150pF
R
C
50MI TO 100MI
R
D
330I
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
60ns
30ns
t
R
= 0.7ns
TO 1ns
t
10%
90%
I
PEAK
100%
V
CC
GND
GND
DI
DE
RE
RO
220I
390I
390I
A
D
R
SHUTDOWN
B
MAX14770E
0.1FF
0.1FF
V
CC
DI
DE
RO
220I
390I
390I
A
D
R
SHUTDOWN
PROFIBUS B LINE
PROFIBUS A LINE
B
RE
MAX14770E
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN
NO.
8 SO S8+4
21-0041 90-0096
8 TDFN-EP T833+2
21-0137 90-0059
8 FMAX U8+1
21-0036 90-0092