MAX3187CAX Fast Delivery |IC PHOENIX CO.,LIMITED

MAX3187CAX ,【15kV ESD-Protected, EMC-Compliant, 230kbps, Dual RS-232 Serial Port for Motherboards/DesktopsELECTRICAL CHARACTERISTICS(V = +4.5V to +5.5V, V = +10.8V to +13.2V, V = -10.8V to -13.2V, T = T to ..
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MAX318CSA ,Precision, CMOS Analog SwitchesFeaturesThe MAX317/MAX318/MAX319 are precision, CMOS,' Low On Resistance <20Ω Typical (35Ω Max)mono ..
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MAX640CSA+ ,5V/3.3V/3V Adjustable, High-Efficiency, Low-IQ, Step-Down DC-DC ConvertersMAX639/MAX640/MAX65319-4505; Rev 3; 8/975V/3.3V/3V/Adjustable, High-Efficiency, Low I , Step-Down D ..
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MAX640ESA+ ,5V/3.3V/3V Adjustable, High-Efficiency, Low-IQ, Step-Down DC-DC ConvertersFeaturesThe MAX639/MAX640/MAX653 step-down switching' High Efficiency for a Wide Range of Load Curr ..
MAX640ESA+T ,5V/3.3V/3V Adjustable, High-Efficiency, Low-IQ, Step-Down DC-DC ConvertersApplicationsMAX639ESA -40°C to +85°C 8 SO9V Battery to 5V, 3.3V, or 3V ConversionMAX639MJA -55°C to ..

MAX3187CAX
【15kV ESD-Protected, EMC-Compliant, 230kbps, Dual RS-232 Serial Port for Motherboards/Desktops
_______________General Description
The MAX3187 complete, dual DTE RS-232 serial port
meets the stringent ESD requirements of the European
Community. All transmitter outputs and receiver inputs
are protected to ±15kV using IEC 1000-4-2 Air-Gap
Discharge, ±8kV using IEC 1000-4-2 Contact
Discharge, and ±15kV using the Human Body Model.
The MAX3187’s six RS-232 transmitters and ten RS-232
receivers require no charge pump. Guaranteed to run
at data rates up to 230kbps, the MAX3187 is optimized
for desktop PC and motherboard applications, and is
compatible with popular software for PC communica-
tions. Power-supply current is less than 1mA for IDD
and ISS, and less than 3mA for ICC.
The MAX3187 is available in a space-saving 36-pin
SSOP package.
________________________Applications
Desktop PC
Motherboards
Instruments
Equipment Meeting IEC 1000-4-2
____________________________FeaturesEnhanced ESD Protection:
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap DischargeLatchup Free During an ESD Event36-Pin SSOP PackageGuaranteed 230kbps Data RateFlow-Through PinoutTwo Complete DTE Serial Ports6 RS-232 Drivers and 10 RS-232 Receivers
MAX3187
±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
19-1186; Rev 1; 10/98
____________________________________________________________Pin Configuration
MAX3187
±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= +4.5V to +5.5V, VDD= +10.8V to +13.2V, VSS= -10.8V to -13.2V, TA= TMINto TMAX, unless otherwise noted. Typical values
are at TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC...........................................................................-0.3V to +7V
VDD.........................................................................-0.3V to +14V
VSS.........................................................................+0.3V to -14V
Input Voltages
T_IN......................................................................-0.3V to +6V
R_IN.................................................................................±30V
Output Voltages
T_OUT..............................................................................±15V
R_OUT....................................................-0.3V to (VCC+ 0.3V)
Short-Circuit Duration
T_OUT (one at a time)............................................Continuous
R_OUT (one at a time)............................................Continuous
Continuous Power Dissipation (TA= +70°C)
SSOP (derate 11.76mW/°C above +70°C)..................762mW
Operating Temperature Ranges
MAX3187CAX.....................................................0°C to +70°C
MAX3187EAX..................................................-40°C to +85°C
Storage Temperature Range ............................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+300°C
MAX3187
±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
ELECTRICAL CHARACTERISTICS (continued)
(VCC= +4.5V to +5.5V, VDD= +10.8V to +13.2V, VSS= -10.8V to -13.2V, TA= TMINto TMAX, unless otherwise noted. Typical values
are at TA= +25°C.)
MAX3187
±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
__________________________________________Typical Operating Characteristics
(VCC= +5V, VDD= +12V, VSS= -12V, TA = +25°C, unless otherwise noted.)
_______________Detailed Description
±15kV ESD Protection
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:±15kV using the Human Body Model±8kV using the Contact-Discharge Method specified
in IEC 1000-4-2 (formerly IEC 801-2)±15kV using the Air-Gap Method specified in
IEC 1000-4-2 (formerly IEC 801-2)
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
MAX3187
±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
______________________________________________________________Pin Description
Figure 1. Slew-Rate Test Circuit and Timing Diagram
MAX3187
±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
Human Body Model
Figure 2a shows the Human Body Model, and Figure
2b shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est, which is then discharged into the device through a
1.5kΩresistor.
IEC 1000-4-2
Since January 1996, all equipment manufactured
and/or sold in the European community has been
required to meet the stringent IEC 1000-4-2 specifica-
tion. The IEC 1000-4-2 standard covers ESD testing
and performance of finished equipment; it does not
specifically refer to integrated circuits. The MAX3187
helps you design equipment that meets Level 4 (the
highest level) of IEC 1000-4-2, without additional ESD-
protection components.
The main difference between tests done using the
Human Body Model and IEC 1000-4-2 is higher peak
current in IEC 1000-4-2. Because series resistance is
lower in the IEC 1000-4-2 ESD test model (Figure 3a), the
ESD withstand voltage measured to this standard is gen-
erally lower than that measured using the Human Body
Model. Figure 3b shows the current waveform for the
±8kV IEC 1000-4-2 Level 4 ESD Contact-Discharge test.
The Air-Gap test involves approaching the device with a
charge probe. The Contact-Discharge method connects
the probe to the device before the probe is energized.
Figure 2b. Human Body Model Current WaveformFigure 2a. Human Body ESD Test Model

Partno	Mfg	Dc	Qty	Available	Descript
MAX3187CAX	MAXIM	N/a	2328	avai	【15kV ESD-Protected, EMC-Compliant, 230kbps, Dual RS-232 Serial Port for Motherboards/Desktops