DS1489/DS1489A Quad Line Receiver July 2002 DS1489/DS1489A Quad Line Receiver General Description The DS1489/DS1489A are quad line receivers designed to interface data terminal equipment with data communications equipment.
They are constructed on a single monolithic silicon chip.
These devices satisfy the specifications of EIA Standard RS-232D.
The DS1489/DS1489A meet and exceed the specifications of MC1489/MC1489A and are pin-for-pin replacements.
Features n n n n n Four separate receivers per package Programmable threshold Built-in input threshold hysteresis “Fail safe” operating mode: high output for open inputs Inputs withstand ± 30V Schematic and Connection Diagrams www.
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