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MAX1490E

Maxim Integrated Products
Part Number MAX1490E
Manufacturer Maxim Integrated Products
Description (MAX1480E / MAX1490E) Isolated RS-485/RS-422
Published Jun 8, 2007
Detailed Description 19-1940; Rev 0; 4/01 ±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces _________________General Description T...
Datasheet PDF File MAX1490E PDF File

MAX1490E
MAX1490E

Overview
19-1940; Rev 0; 4/01 ±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 microcircuit.
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 feature full-duplex communication.
Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a highimpedance state.
The receiver input has a fail-safe www.
DataSheet4U.
com feature that guarantees a known output (RO low 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 isolated 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.
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____________________________Features o Isolated Data Interface, Guaranteed to 1260VRMS (1min) o ±15kV ESD Protection on I/O Pins o Slew-Rate Limited for Errorless Data Transmission (MAX1480EC/MAX1490EB) o High-Speed, Isolated, 2.
5Mbps RS-485/RS-422 Interface (MAX1480EA/MAX1490EA) o Full-Duplex Data Communication (MAX1490EA/MAX1490...


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