SN74AS885DW datasheet by Texas Instruments

SN74AS885DW Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN74AS885DW?
  The maximum operating frequency of the SN74AS885DW is 100 MHz, but it can vary depending on the system design and capacitive loading.
• How do I ensure signal integrity when using the SN74AS885DW?
  To ensure signal integrity, use proper PCB layout techniques, such as minimizing trace lengths, using impedance-controlled traces, and adding termination resistors as needed. Also, follow the recommended operating conditions and signal loading guidelines.
• Can I use the SN74AS885DW in a 3.3V system?
  Yes, the SN74AS885DW is compatible with 3.3V systems, but you need to ensure that the input signals are within the recommended voltage range (VCC - 0.5V to VCC + 0.5V) to maintain proper operation.
• How do I handle power sequencing when using the SN74AS885DW?
  To avoid latch-up or other issues, ensure that the power supply voltage (VCC) is applied before the input signals, and that the input signals are stable before the clock signal is applied.
• What is the recommended termination scheme for the SN74AS885DW?
  The recommended termination scheme for the SN74AS885DW is to use a series terminator (Rs) of 22-33 ohms, and a parallel terminator (Rt) of 50-75 ohms, depending on the system requirements and signal loading.