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MAX1480EACPI+ |MAX1480EACPIMAXIM/DALLASN/a2avai±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces
MAX1480EAEPIMAXIMN/a68avai±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces
MAX1480EAEPI+MAIXMN/a1500avai±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces
MAX1480ECCPIMAXIMN/a11avai±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces
MAX1490EAEPG+MAXIMN/a100avai±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces


MAX1480EAEPI+ ,±15kV ESD-Protected, Isolated RS-485/RS-422 Data InterfacesApplicationsD2 4 21 ISO RO DRVIndustrial-Control Local Area Networks5GND1 20 AAutomatic Test Equipm ..
MAX1480ECCPI ,±15kV ESD-Protected, Isolated RS-485/RS-422 Data InterfacesApplications3Isolated RS-485/RS-422 Data Interface D1 22 ISO VCC1Transceivers for EMI-Sensitive
MAX1480ECEPI ,15kV ESD-Protected, Isolated RS-485/RS-422Features Isolated Data Interface, Guaranteed to 1260VThe MAX1480EA/MAX1480EC/MAX1490EA/MAX1490EBRM ..
MAX1481CUB ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX PackageMAX1481/MAX1484/MAX1485/MAX148619-1312; Rev 0; 10/97Software-Selectable, Half-/Full-Duplex, Slew-Ra ..
MAX1481CUB ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX PackageApplicationsinput is open circuit.Industrial-Control Local Area Networks__Selection TableData Slew- ..
MAX1481CUB ,Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX PackageApplications0.1µA. All devices operate from a single 5V supply.Low-Power RS-422/RS-485 Communicatio ..
MAX4066AEEE ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchesMAX4066/MAX4066A19-0439; Rev 1; 3/96Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog Switches________ ..
MAX4066AESD ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchesGeneral Description ________
MAX4066AESD+ ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchGeneral Description ________
MAX4066CEE ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchesApplications' Wide Bandwidth: > 100MHzBattery-Operated Equipment______________Ordering Information ..
MAX4066CEE+ ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchMAX4066/MAX4066A19-0439; Rev 1; 3/96Low -Cost, Low -Voltage, Quad, SPST, CMOS Analog Sw itches_____ ..
MAX4066CPD ,Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog SwitchesApplications' Wide Bandwidth: > 100MHzBattery-Operated Equipment______________Ordering Information ..


MAX1480EACPI+-MAX1480EAEPI-MAX1480EAEPI+-MAX1480ECCPI-MAX1490EAEPG+
±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces
_________________General Description
The MAX1480EA/MAX1480EC/MAX1490EA/MAX1490EB
are complete, electrically isolated, RS-485/RS-422 data
communications interface solutions in a hybrid microcir-
cuit. The RS-485/RS-422 I/O pins are protected against
±15kV electrostatic discharge (ESD) shocks, without
latchup. Transceivers, optocouplers, and a transformer
provide a complete interface in a standard DIP package.
A single +5V supply on the logic side powers both sides
of the interface.
The MAX1480EC/MAX1490EB feature reduced-slew-rate
drivers that minimize EMI and reduce reflections caused
by improperly terminated cables, allowing error-free data
transmission at data rates up to 160kbps. The
MAX1480EA/MAX1490EA driver slew rate is not limited,
allowing transmission rates up to 2.5Mbps. The
MAX1480EA/MAX1480EC are designed for half-duplex
communication, while the MAX1490EA/MAX1490EB fea-
ture full-duplex communication.
Drivers are short-circuit current limited and protected
against excessive power dissipation by thermal shut-
down circuitry that places the driver outputs into a high-
impedance state. The receiver input has a fail-safe
feature that guarantees a known output (ROlow for the
MAX1480EA/MAX1480EC, RO high for the MAX1490EA/
MAX1490EB) if the input is open circuit.
The MAX1480EA/MAX1480EC/MAX1490EA/MAX1490EB
withstand 1260VRMS(1min) or 1520VRMS(1s). Their iso-
lated outputs meet all RS-485/RS-422 specifications. The
MAX1480EA/MAX1480EC are available in a 28-pin DIP
package, and the MAX1490EA/MAX1490EB are available
in a 24-pin DIP package.
________________________Applications

Isolated RS-485/RS-422 Data Interface
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
Automatic Test Equipment
HVAC/Building Control Networks
Telecom
____________________________Features
Isolated Data Interface, Guaranteed to 1260VRMS
(1min)
±15kVESD Protection on I/O PinsSlew-Rate Limited for Errorless Data
Transmission (MAX1480EC/MAX1490EB)
High-Speed, Isolated, 2.5Mbps RS-485/RS-422
Interface (MAX1480EA/MAX1490EA)
Full-Duplex Data Communication
(MAX1490EA/MAX1490EB)
Single +5V SupplyCurrent Limiting and Thermal Shutdown for
Driver Overload Protection
Standard 0.6in DIP Packages
28-Pin DIP (MAX1480EA/MAX1480EC)
24-Pin DIP (MAX1490EA/MAX1490EB)
MAX1480E/MAX1490E
±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces
Pin Configurations

19-1940; Rev 0; 4/01Selector Guide appears at end of data sheet.
MAX1480E/MAX1490E
±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VCC_= +5V ±10%, VFS= VCC_, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC_= +5V and TA= +25°C.)
(Notes 1, 2)
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.
With Respect to GND_
Supply Voltage (VCC_)..........................................-0.3V to +6V
Control Input Voltage (SD, FS)..............-0.3V to (VCC_+ 0.3V)
Receiver Output Voltage (RO, RO).......-0.3V to (VCC_+ 0.3V)
Output Switch Voltage (D1, D2).......................................+12V
With Respect to ISO COM_
Control Input Voltage (ISO DE_)....-0.3V to (ISO VCC_+ 0.3V)
Driver Input Voltage (ISO DI_).......-0.3V to (ISO VCC_+ 0.3V)
Receiver Output Voltage (ISO RO_)..-0.3V to (ISO VCC_+ 0.3V)
Driver Output Voltage (A, B, Y, Z)......................-8V to +12.5V
Receiver Input Voltage (A, B).............................-8V to +12.5V
LED Forward Current (DI, DE, ISO RO LED)......................50mA
Continuous Power Dissipation (TA= +70°C)
24-Pin Plastic DIP (derate 8.7mW°C above +70°C)....696mW
28-Pin Plastic DIP (derate 9.09mW/°C above +70°C).727mW
Operating Temperature Ranges
MAX1480E_CPI/MAX1490E_CPI........................0°C to +70°C
MAX1480E_EPI/MAX1490E_EPI......................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX1480E/MAX1490E
±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces
ELECTRICAL CHARACTERISTICS (continued)

(VCC_= +5V ±10%, VFS= VCC_, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC_= +5V and TA= +25°C.)
(Notes 1, 2)
SWITCHING CHARACTERISTICS—MAX1480EA/MAX1490EA

(VCC_= +5V ±10%, VFS= VCC_, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC_= +5V and TA= +25°C.)
MAX1480E/MAX1490E
±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces
Note 1:
All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to logic-
side ground (GND_), unless otherwise specified.
Note 2:
For DE´and DI´pin descriptions, see Detailed Block Diagram and Typical Application Circuit (Figure 1 for MAX1480EA/
MAX1480EC, Figure 2 for MAX1490EA/MAX1490EB).
Note 3:
Shutdown supply current is the current at VCC1and VCC2when shutdown is enabled.
Note 4:
Limit guaranteed by applying 1520VRMSfor 1s. Test voltage is applied between all pins on one side of the package to all
pins on the other side of the package, e.g., between pins 1–14 and pins 15–28 on the 28-pin package.
Note 5:
Applies to peak current (see Typical Operating Characteristics). Although the MAX1480EA/MAX1480EC and
MAX1490EA/MAX1490EB provide electrical isolation between logic ground and signal paths, they do not provide isolation
between external shields and the signal paths (see Isolated Common Connectionsection).
SWITCHING CHARACTERISTICS—MAX1480EA/MAX1490EA (continued)

(VCC_= +5V ±10%, VFS= VCC_, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC_= +5V and TA= +25°C.)
SWITCHING CHARACTERISTICS—MAX1480EC/MAX1490EB

(VCC_= +5V ±10%, VFS= VCC_, TA= TMINto TMAX, unless otherwise noted. Typical values are at VCC_= +5V and TA= +25°C.)
MAX1480E/MAX1490E
±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces

OUTPUT CURRENT vs.
RECEIVER OUTPUT LOW VOLTAGE

MAX1480E/90E TOC01
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)
OUTPUT CURRENT vs.
RECEIVER OUTPUT HIGH VOLTAGE

MAX1480E/90E TOC02
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
RECEIVER OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX1480E/90E TOC03
TEMPERATURE (°C)
OUTPUT HIGH VOLTAGE (V)-20604080
RECEIVER OUTPUT LOW VOLTAGE
vs. TEMPERATURE
MAX1480E/90E TOC04
TEMPERATURE (°C)
OUTPUT LOW VOLTAGE (V)-20604080
DRIVER OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
MAX1480E/90E TOC07
DIFFERENTIAL OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
OUTPUT CURRENT vs.
DRIVER OUTPUT LOW VOLTAGE
MAX1480E/90E TOC05
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)
OUTPUT CURRENT vs.
DRIVER OUTPUT HIGH VOLTAGE
MAX1480E/90E TOC06
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
MAX1480E/90E TOC08
TEMPERATURE (°C)
DIFFERENTIAL OUTPUT VOLTAGE (V)-20604080
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX1480E/90E TOC09
TEMPERATURE (°C)
SHUTDOWN CURRENT (-20604080
__________________________________________Typical Operating Characteristics
(VCC_= +5V, VFS= VCC_, Figures 1 and 2, TA = +25°C, unless otherwise noted.)
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