The MC1489P 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.
Input resistance –3k to 7k
Input signal range ± 30V
Input threshold hysteresis built-in
a) Logic threshold shifting
b) Input noise filtering
Datasheet Available: ST MC1489P
14 pin DIP. Manufactured by ST.