SN74LV126AD datasheet by Texas Instruments

SN74LV126AD Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN74LV126AD?
  The maximum operating frequency of the SN74LV126AD is 100 MHz, but it can vary depending on the output load and supply voltage.
• How do I ensure signal integrity when using the SN74LV126AD in a high-speed application?
  To ensure signal integrity, use a low-impedance output termination, keep the output traces short and well-terminated, and use a low-jitter clock source. Additionally, consider using a signal integrity analysis tool to simulate and optimize your design.
• Can I use the SN74LV126AD in a 3.3V system, and if so, what are the implications?
  Yes, the SN74LV126AD can be used in a 3.3V system, but the output voltage will be limited to 3.3V. This may affect the noise margin and signal integrity, especially if the receiving device expects a 5V signal. Additionally, the power consumption will be lower at 3.3V, but the propagation delay may be slightly longer.
• How do I handle power sequencing when using the SN74LV126AD in a system with multiple power rails?
  To avoid latch-up or damage, ensure that the VCC pin is powered up before the input signals, and that the input signals are stable before the clock signal is applied. A power sequencing circuit or a voltage supervisor can be used to ensure proper power-up and power-down sequencing.
• What is the recommended layout and routing for the SN74LV126AD to minimize EMI and noise?
  To minimize EMI and noise, use a ground plane, keep the output traces short and away from noise sources, and use a shielded cable or a twisted pair for clock and data signals. Additionally, consider using a common-mode choke or a ferrite bead to filter out high-frequency noise.