MAX3187 Maxim, MAX3187 Datasheet - Page 5

• Manufacturer Part Number: MAX3187
• Description: 15kV ESD-Protected / EMC-Compliant / 230kbps / Dual RS-232 Serial Port for Motherboards/Desktops
• Manufacturer: Maxim

Figure 1. Slew-Rate Test Circuit and Timing Diagram
______________________________________________________________Pin Description
Dual RS-232 Serial Port for Motherboards/Desktops
DRIVER
V
20, 22, 23, 30, 32, 33
INPUT
GENERATOR
OUT
0V
19, 21, 24, 25, 26,
4, 5, 7, 14, 15, 17
29, 31, 34, 35, 36
1, 2, 3, 6, 8, 11,
12, 13, 16, 18
SIGNAL
±15kV ESD-Protected, EMC-Compliant, 230kbps,
3.0V
PIN
10
27
28
9
t
1.5V
PHL
t
t
F2
F1
_______________________________________________________________________________________
-3.0V
-3.3V
3.3V
3.0V
R1OUT–R10OUT
T6OUT–T1OUT
R10IN–R1IN
T1IN–T6IN
NAME
GND
t
V
V
V
PLH
CC
DD
SS
R
t
t
L
R2
R1
Receiver Outputs, swing between GND and V
Transmitter Inputs
Supply-Voltage Input, 4.5V to 5.5V
Supply-Voltage Input, -10.8V to -13.2V
Ground. Connect system to ground.
Supply-Voltage Input, 10.8V to 13.2V
Receiver Inputs
Transmitter Outputs, swing between V
C
L
V
V
0V
OH
OL
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against electro-
static discharges (ESD) encountered during handling
and assembly. The MAX3187 driver outputs and receiv-
er inputs have extra protection against static electricity
found in normal operation. Maxim’s engineers devel-
oped state-of-the-art structures to protect these pins
against ±15kV ESD, without damage. After an ESD
event, the MAX3187 continues working without latchup.
ESD protection can be tested in several ways. The
transmitter outputs and receiver inputs are character-
ized for protection to the following:
1) ±15kV using the Human Body Model
2) ±8kV using the Contact-Discharge Method specified
3) ±15kV using the Air-Gap Method specified in
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
_______________Detailed Description
in IEC 1000-4-2 (formerly IEC 801-2)
IEC 1000-4-2 (formerly IEC 801-2)
FUNCTION
DD
and V
±15kV ESD Protection
CC
SS
ESD Test Conditions
5