TLC59401PWPR datasheet by Texas Instruments

TLC59401PWPR Frequently Asked Questions (FAQs)

• What is the maximum frequency of the clock input?
  The maximum frequency of the clock input is 50 MHz, but it's recommended to use a clock frequency between 10 kHz to 20 MHz for optimal performance.
• How do I properly terminate the OUTx pins?
  The OUTx pins should be terminated with a 100-ohm resistor to VCC or GND, depending on the application, to prevent ringing and ensure proper signal integrity.
• What is the purpose of the IREF pin?
  The IREF pin sets the maximum current for each channel. It's used to set the maximum current limit for the LEDs, and it's recommended to use a 1.24-kohm resistor to set the maximum current to 20 mA.
• How do I synchronize multiple TLC59401PWPR devices?
  To synchronize multiple devices, connect the SIN pin of one device to the SOUT pin of another device, and ensure that the clock signals are synchronized. This allows for cascading multiple devices to control a large number of LEDs.
• What is the purpose of the GSCLK pin?
  The GSCLK pin is the grayscale clock input, which is used to update the grayscale data for each channel. It's typically connected to a microcontroller's clock output.