MAX3235EEWP+G36

Manufacturer Part NumberMAX3235EEWP+G36
DescriptionIC TXRX RS232 DUAL250KBPS 20SOIC
ManufacturerMaxim Integrated Products
TypeTransceiver
MAX3235EEWP+G36 datasheet
 


Specifications of MAX3235EEWP+G36

Number Of Drivers/receivers2/2ProtocolRS232
Voltage - Supply4.5 V ~ 5.5 VMounting TypeSurface Mount
Package / Case20-SOIC (7.5mm Width)Propagation Delay Time Ns100 ns
Operating Supply Voltage5 VSupply Current1 uA
Operating Temperature Range- 40 C to + 85 CData Rate250 Kbps
Mounting StyleSMD/SMTLead Free Status / RoHS StatusLead free / RoHS Compliant
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
Page 9/12

Download datasheet (258Kb)Embed
PrevNext
±15kV ESD-Protected, 1µA, 250kbps, 3.3V/5V, Dual
RS-232 Transceivers with Internal Capacitors
POWER-
MASTER SHDN LINE
MANAGEMENT
0.1µF
UNIT
FORCEOFF
MAX3233E
MAX3235E
Figure 4. AutoShutdown Plus Initial Turn-On to Wake Up
Another System
R
1MΩ
R
1500Ω
C
D
DISCHARGE
CHARGE-CURRENT
RESISTANCE
LIMIT RESISTOR
HIGH-
C s
STORAGE
VOLTAGE
100pF
CAPACITOR
DC
SOURCE
Figure 5a. Human Body ESD Test Model
I
100%
I r
P
90%
AMPERES
36.8%
10%
0
TIME
0
t
RL
t
DL
CURRENT WAVEFORM
Figure 5b. Human Body Current Waveform
event, Maxim’s E versions keep working without
latchup, whereas competing RS-232 products can
latch and must be powered down to remove latchup.
_______________________________________________________________________________________
1MΩ
FORCEON
HIGH-
VOLTAGE
DC
SOURCE
Figure 6a. IEC 1000-4-2 ESD Test Model
ESD protection can be tested in various ways; the
transmitter outputs and receiver inputs of this product
family are characterized for protection to the following
limits:
1) ±15kV using the Human Body Model
2) ±8kV using the Contact Discharge method specified
in IEC 1000-4-2
DEVICE
3) ±15kV using IEC 1000-4-2’s Air-Gap Discharge
UNDER
TEST
method
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.
Figure 5a shows the Human Body Model and Figure 5b
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
PEAK-TO-PEAK RINGING
a 100pF capacitor charged to the ESD voltage of inter-
(NOT DRAWN TO SCALE)
est, which is then discharged into the test device
through a 1.5kΩ resistor.
The IEC 1000-4-2 standard covers ESD testing and per-
formance of finished equipment; it does not specifically
refer to integrated circuits. The MAX3233E/MAX3235E
help you design equipment that meets Level 4 (the high-
est level) of IEC 1000-4-2, without the need for additional
ESD-protection components.
The major difference between tests done using the
Human Body Model and IEC 1000-4-2 is higher peak cur-
rent in IEC 1000-4-2, because series resistance is lower
in the IEC 1000-4-2 model. Hence, the ESD withstand
voltage measured to IEC 1000-4-2 is generally lower than
R
50MΩ to 100MΩ
R
330Ω
C
D
DISCHARGE
CHARGE CURRENT
RESISTANCE
LIMIT RESISTOR
C s
STORAGE
150pF
CAPACITOR
ESD Test Conditions
Human Body Model
IEC 1000-4-2
DEVICE
UNDER
TEST
9