SN74S225N datasheet by Texas Instruments

SN74S225N Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN74S225N?
  The maximum operating frequency of the SN74S225N is 100 MHz, but it can vary depending on the specific application and operating conditions.
• How do I ensure signal integrity when using the SN74S225N?
  To ensure signal integrity, use proper PCB layout techniques, such as keeping signal traces short and away from noise sources, using termination resistors, and providing adequate power supply decoupling.
• Can I use the SN74S225N in a 3.3V system?
  Yes, the SN74S225N can operate from a 3.3V power supply, but the output voltage will be limited to around 3.0V. Additionally, the input voltage threshold may be affected, so ensure that the input signals meet the recommended voltage levels.
• How do I handle the power-up and power-down sequencing of the SN74S225N?
  To avoid latch-up or other issues, ensure that the power supply voltage (VCC) is stable and within the recommended range before applying input signals. Also, ensure that the input signals are stable and within the recommended voltage range before powering down the device.
• What is the recommended termination scheme for the SN74S225N?
  The recommended termination scheme for the SN74S225N is to use a series terminator (e.g., 33 ohms) at the end of the transmission line, and a parallel terminator (e.g., 50 ohms) at the receiver end.