SLLS059B - FEBRUARY 1990 - REVISED MAY 1995
The SN751177 and SN751178 dual differential drivers and receivers are monolithic integrated circuits that are designed for balanced multipoint bus transmission at rates up to 10 Mbits per second. They are designed to improve the performance of full-duplex data communications over long bus lines and meet ANSI Standards EIA/TIA-422-B, RS-485 and ITU Recommendations V.10 and V.11.
The SN751177 and SN751178 driver outputs provide limiting for both positive and negative currents and thermal-shutdown protection from line fault conditions on the transmission bus line.
The receiver features high input impedance of at least 12kΩ, an input sensitivity of ±200 mV over a common-mode input voltage range of -12 V to 12V and typical input hysteresis of 50 mV. Fail-safe design ensures that if the receiver inputs are open, the receiver outputs will always be high.
The SN751177 and SN751178 are characterized for operation from -20°C to 85°C.
H = high level, L = low level, ? = indeterminate, X = irrelevant, Z = high impedance (off)
View more information about generic part numbers:SN751177, SN751178
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