MAX1489EEPD+ Maxim Integrated Products, MAX1489EEPD+ Datasheet - Page 5

• Manufacturer Part Number: MAX1489EEPD+
• Description: IC RCV RS232 QUAD 120KBPS 14DIP
• Manufacturer: Maxim Integrated Products
• Type: Receiverr

Specifications of MAX1489EEPD+

• Number Of Drivers/receivers: 0/4
• Protocol: RS232
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 3a. IEC1000-4-2 ESD Test Model
The Machine Model for ESD testing uses a 200pF stor-
age capacitor and zero-discharge resistance. Its objec-
tive is to mimic the stress caused by contact that
occurs with handling and assembly during manufactur-
ing. Of course, all pins (not just RS-232 inputs and out-
puts) require this protection during manufacturing.
Therefore, the Machine Model is less relevant to the I/O
ports than the Human Body Model and IEC1000-4-2.
VOLTAGE
SOURCE
HIGH-
DC
CHARGE-CURRENT
R
LIMIT RESISTOR
C
50MΩ to 100MΩ R
150pF
_______________________________________________________________________________________
C s
STORAGE
CAPACITOR
RESISTANCE
DISCHARGE
D
330Ω
Low-Power RS-232 Line Receiver
Machine Model
DEVICE
UNDER
TEST
±15kV ESD-Protected, Quad,
__________ Applications Information
Use proper layout to ensure other devices on your
board are not damaged in an ESD strike. Currents as
high as 60A can instantaneously pass through the
ground pin, so it is important to minimize the ground-
lead return path to the power supply. A separate return
path to the power supply is recommended. Trace
widths should be greater than 40 mils. V
bypassed with 0.1µF capacitors as close to the part as
possible to ensure maximum ESD protection.
Figure 3b. IEC1000-4-2 ESD Generator Current Waveform
t
r
= 0.7ns to 1ns
100%
90%
10%
I
30ns
60ns
CC
must be
t
5