Motorola MC1489L (Ceramic Package Hi Spec) Line Receiver Quad RS232, Integrated Circuit (14 pin DIL package)
General Description/Product Information LINE RECEIVER QUAD RS232, 1489, DIP Device Type: Line Interface Type: RS232 No. of Drivers: 4 Supply Voltage Range: 4.5V to 5.5V Driver Case Style: DIP No. of Pins: 14 Base Number: 1489 Data Rate: 120Kbps IC Generic Number: 1489 Interface: RS232, V.28 Interface Type: RS232 Line / Bus Driver / Receiver / Transceiver Type: Quad RS232 Logic Function Number: 1489 No. of Channels: 4 No. of Receivers: 4 Package / Case: DIP Propagation Delay: 4000ns Supply Current: 350µA Supply Voltage Max: 5.5V Supply Voltage Min: 4.5V Termination Type: Through Hole
To view Motorola datasheet go to … https://dl.dropbox.com/u/41491996/MC1489L.pdfDate coded 7605 these are still in original tubes and “as new” condition, they should function to their full original specification.