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.

■ INPUT RESISTANCE –3k to 7kΩ
■ INPUT SIGNAL RANGE – ± 30V
■ INPUT THRESHOLD HYSTERESIS BUILT-IN
■ RESPONSE CONTROL:
   a) LOGIC THRESHOLD SHIFTING
   b) INPUT NOISE FILTERING