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MAX1490A

Maxim
Part Number MAX1490A
Manufacturer Maxim
Description Complete / Isolated RS-485/RS-422 Data Interface
Published Jul 11, 2014
Detailed Description 19-0259; Rev 5; 5/05 Complete, Isolated RS-485/RS-422 Data Interface _________________General Description The MAX1480A/...
Datasheet PDF File MAX1490A PDF File

MAX1490A
MAX1490A

Overview
19-0259; Rev 5; 5/05 Complete, Isolated RS-485/RS-422 Data Interface _________________General Description The MAX1480A/MAX1480B/MAX1480C/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/MAX1490B 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/MAX1480C/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.
Next-Generation Device Features ♦ For Integrated ESD Protection MAX1480E/MAX1490E: ±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces ♦ For Space-Constrained Applications MAX3157: High CMRR, RS-485 Transceiver with ±50V Isolation MAX1480A/B/C/MAX1490A/B _______________Ordering Information PART† MAX1480ACPI MAX1480AEPI TEMP RANGE 0°C to +70°C -40°C to +85°C PIN-PACKAGE 28 Wide Plastic DIP 28 Wide Plastic DIP Ordering Information continued at end of data sheet.
†Data rate f...


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