SN75ALS171J datasheet by Texas Instruments

SN75ALS171J Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN75ALS171J?
  The maximum operating frequency of the SN75ALS171J is 100 MHz, but it can be used at higher frequencies with proper termination and signal conditioning.
• How do I choose the correct termination resistors for the SN75ALS171J?
  The termination resistors should be chosen based on the transmission line impedance, signal frequency, and desired signal integrity. A good starting point is to use 50-ohm resistors for most applications.
• Can I use the SN75ALS171J for differential signaling other than RS-485?
  Yes, the SN75ALS171J can be used for other differential signaling standards such as RS-422, CAN, and LVDS, but the specific application and signal requirements should be carefully considered.
• How do I handle common-mode voltage in an RS-485 system using the SN75ALS171J?
  The SN75ALS171J can handle common-mode voltages up to ±12V, but it's recommended to use a common-mode filter or isolation transformer to reduce common-mode noise and ensure signal integrity.
• What is the maximum cable length supported by the SN75ALS171J?
  The maximum cable length supported by the SN75ALS171J depends on the signal frequency, cable type, and termination. As a general rule, the cable length should be limited to 100-200 feet (30-60 meters) for reliable operation.