MAX3186 Maxim, MAX3186 Datasheet - Page 5

• Manufacturer Part Number: MAX3186
• Description: 15kV ESD-Protected / EMC-Compliant / 230kbps RS-232 Serial Port for Modems
• Manufacturer: Maxim

Figure 1a. IEC1000-4-2 ESD Test Model
Figure 1b. IEC1000-4-2 ESD Generator Current Waveform
______________________________________________________________Pin Description
VOLTAGE
SOURCE
t
r
12, 13, 14, 17, 19
HIGH-
±15kV ESD-Protected, EMC-Compliant, 230kbps
= 0.7ns to 1ns
DC
2, 4, 7, 8, 9
15, 16, 18
3, 5, 6
PIN
CHARGE-CURRENT
10
11
20
100%
1
LIMIT RESISTOR
90%
10%
R
I
C
50M to 100M
150pF
_______________________________________________________________________________________
C s
30ns
R3OUT, R2OUT, R1OUT
STORAGE
CAPACITOR
R
RESISTANCE
DISCHARGE
D
R1IN, R2IN, R3IN
330
T1OUT–T5OUT
60ns
T5IN–T1IN
NAME
GND
V
V
V
DD
CC
SS
RS-232 Serial Port for Modems
DEVICE
UNDER
TEST
Supply-Voltage Input, +10.8V to +13.2V
Transmitter Outputs, swing between V
Receiver Inputs
Supply-Voltage Input, -10.8V to -13.2V
Ground. Connect to system ground.
Transmitter Inputs
Receiver Outputs, swing between GND and V
Supply-Voltage Input, +4.5V to +5.5V
t
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against electro-
static discharges encountered during handling and
assembly. The MAX3186 driver outputs and receiver
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 ESD of ±15kV, without damage. After an ESD
event, the MAX3186 continues working without latchup.
ESD protection can be tested in several ways. The
transmitter outputs and the receiver inputs are charac-
terized for protection to the following:
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
1) ±15kV using the Human Body Model
2) ±8kV using the Contact-Discharge Method specified
3) ±15kV using the Air-Gap Method specified in
_______________Detailed Description
in IEC1000-4-2 (formerly IEC801-2)
IEC1000-4-2 (formerly IEC801-2)
FUNCTION
DD
and V
±15kV ESD Protection
CC
ESD Test Conditions
SS
5