quad line receiver
...«ecno oe:t Line Drivers/Receivers ::E -' "ecno LM1489/LM1489A quad line receiver ...oe:t ::E general description features -' The LM1489/LM1489A are quad line receivers designed to interface data terminal equ ipment with data communications equipment. They are constructed on a single monolithic silicon chip. These devices satisfy the specifications ...
National Semiconductor