Description
The MC1489 monolithic quad line receivers are designed to interface data terminal equipment with data communications equipment in conformance with the specifications of EIA Standard N° RS232C.

General features
■ Input resistance –3k to 7kΩ
■ Input signal range ± 30V
■ Input threshold hysteresis built-in
■ Response control:
   a) Logic threshold shifting
   b) Input noise filtering