SN75LVDS31D datasheet by Texas Instruments

SN75LVDS31D Frequently Asked Questions (FAQs)

• What is the maximum cable length that can be used with the SN75LVDS31D?
  The maximum cable length depends on the signal frequency, cable quality, and environment. As a general guideline, Texas Instruments recommends a maximum cable length of 10 meters at 1.92 Gbps. However, it's possible to use longer cables with proper signal conditioning and termination.
• How do I terminate the LVDS outputs of the SN75LVDS31D?
  The LVDS outputs of the SN75LVDS31D should be terminated with a 100-ohm differential load to ensure proper signal integrity. A 100-ohm resistor can be connected between the positive and negative outputs of each channel.
• Can I use the SN75LVDS31D with a 3.3V power supply?
  Yes, the SN75LVDS31D can operate with a 3.3V power supply. However, the device's output voltage swing will be reduced, which may affect signal integrity at higher frequencies. It's recommended to use a 2.5V power supply for optimal performance.
• How do I handle skew between the clock and data channels in the SN75LVDS31D?
  The SN75LVDS31D has a built-in deskew function that can compensate for up to 1.5 ns of skew between the clock and data channels. However, if the skew is greater than 1.5 ns, external deskew circuits or signal conditioning may be required.
• Is the SN75LVDS31D compatible with other LVDS standards, such as FPD-Link or OpenLDI?
  The SN75LVDS31D is a general-purpose LVDS transmitter and can be used with other LVDS standards, such as FPD-Link or OpenLDI, as long as the signal format and frequency are compatible. However, some adjustments to the device's configuration or signal conditioning may be required.