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
No. EIA−232D.
Features
• Input Resistance − 3.0 k to 7.0 k
• Input Signal Range − ± 30 V
• Input Threshold Hysteresis Built In
• Response Control
a) Logic Threshold Shifting
b) Input Noise Filtering
• Pb−Free Packages are Available