First line: 1489A* SG1489/SG1489A LINEAR INTEGRATED CIRCUITS QUAD RS-232C LINE RECEIVERS SG1489/SG1489A monolithic quad line receivers designed interface data terminal equipment with data communications equipment conformance with specifications Standard RS-232C. Input resistance 3.0Kn 7.0KUAbstract: .. J - PACKAGE SG1489AJ/883B 0 °C to 75 °C SG1489AJ 0 °C to 75 °C SG 1489J/883B 0 °C to 75 °C SG1489J 0 °C to 75 °C 1A r: 1 ~ h l: *vcc CONTROL 1 13 ~ 4A 1Y t 3 12 11 CONTROL 4 2A ~ A 11 ^ 4Y CONTROL 2 Zi 10" 3A 2Y .. Tags: 1489A*1489JSG1489datasheet abstract..