The SN55LVDS31, SN65LVDS31, SN65LVDS3487, and SN65LVDS9638 devices are differential line
drivers that implement the electrical characteristics of low-voltage differential signaling (LVDS).
This signaling technique lowers the output voltage levels of 5-V differential standard levels (such
as TIA/EIA-422B) to reduce the power, increase the switching speeds, and allow operation with a
3.3-V supply rail. Any of the four current-mode drivers will deliver a minimum differential output
voltage magnitude of 247 mV into a 100-Ω load when enabled.
The intended application of these devices and signaling technique is both point-to-point
and multidrop (one driver and multiple receivers) data transmission over controlled impedance media
of approximately 100 Ω. The transmission media may be printed-circuit board traces, backplanes, or
cables. The ultimate rate and distance of data transfer is dependent upon the attenuation
characteristics of the media and the noise coupling to the environment.
The SN65LVDS31, SN65LVDS3487, and SN65LVDS9638 devices are characterized for operation
from –40°C to 85°C. The SN55LVDS31 device is characterized for operation from –55°C to
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