The SN75ALS1178NSR is a dual Differential Driver and Receiver integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and meets standards TIA/EIA-422-B and TIA/EIA-485-A. It combines dual 3-state differential line drivers and dual 3-state differential input line receivers, both of which operate from a single 5V power supply. The driver and receiver has active-high and active-low enables, respectively, which can be externally connected together to function as direction control. The driver each has an individual active-high enable. Failsafe design ensures that when the receiver inputs are open, the receiver outputs are always high.
● Driver positive-and negative-current limiting
● Thermal shutdown protection
● Driver 3-state outputs active-high enable
● Designed for multi-point bus transmission on long bus lines in noisy environments
● 50mA Maximum low supply-current
● -7 to 12V Driver common-mode output voltage range
● ±200mV Receiver input sensitivity
● 50mV Typical receiver hysteresis
● 12kR Minimum receiver high input impedance
● Green product and no Sb/Br
