Max1490aepg Ic Chips From Maxim - China

The MAX1490A/MAX1490B are complete, electrically isolated, RS-485/

RS-422 data-communications interface solutions in a

hybrid microcircuit.

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 MAX1480B/MAX1480C/MAX1490 B feature reducedslew-rate

drivers that minimize EMI and reduce reflections

caused by improperly terminated cables, allowing

error-free data transmission at data rates up to 250kbps.

The MAX1480A/MAX1490A driver slew rate is not limited, allowing transmission rates up to 2.5Mbps.

The

MAX1480A/B/C are designed for half-duplex communication, while the MAX1490A/B 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

feature that guarantees a known output (RO low for the

MAX1480A/B/C, RO high for the MAX1490A/B) if the

input is open circuit.

The MAX1480A/MAX1480B/MAX1480 C/MAX1490A/

MAX1490B typically withstand 1600VRMS (1 minute) or

2000VRMS (1 second).

Their isolated outputs meet all

RS-485/RS-422 specifications.

The MAX1480A/B/C are

available in a 28-pin DIP package, and the MAX1490A/B

are available in a 24-pin DIP package.

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