The DS1489AN is a quad line receiver 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 DS1489AN meets and exceeds the specifications of MC1489/MC1489A and are pin-for-pin replacements.
Four separate receivers per package
Built-in input threshold hysteresis
“Fail safe” operating mode: high output for open inputs
Inputs withstand ±30V
Datasheet Available:National DS1489AN
14 pin DIP. Manufactured by National.