The SN65LBC173A is a quadruple differential line receiver with tri-state outputs,
designed for TIA/EIA-485 (RS-485), TIA/EIA-422 (RS-422), and ISO 8482 (Euro RS-485)
This device is optimized for balanced multipoint bus communication at data rates up to
and exceeding 50 million bits per second. The transmission media may be twisted-pair cables,
printed-circuit board traces, or backplanes. The ultimate rate and distance of data transfer is
dependent upon the attenuation characteristics of the media and the noise coupling to the
The receiver operates over a wide range of positive and negative common-mode input
voltages, and features ESD protection to 6 kV, making it suitable for high-speed multipoint data
transmission applications in harsh environments. These devices are designed using
LinBiCMOS®, facilitating low-power consumption and robustness.
The G and G inputs provide enable control logic for either
positive- or negative-logic enabling all four drivers. When disabled or powered off, the receiver
inputs present a high-impedance to the bus for reduced system loading.
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