SN74HC251DBR datasheet by Texas Instruments

SN74HC251DBR Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC251DBR?
  The maximum frequency of operation for the SN74HC251DBR is 40 MHz.
• Can I use the SN74HC251DBR in a 5V system?
  Yes, the SN74HC251DBR is compatible with 5V systems, but it's recommended to use a voltage regulator to ensure a stable 5V supply.
• How do I handle the enable inputs (EN1 and EN2) in my design?
  The enable inputs (EN1 and EN2) are active-low, meaning they must be pulled low to enable the device. You can connect them to VCC or a logic high signal to disable the device.
• What is the propagation delay of the SN74HC251DBR?
  The propagation delay of the SN74HC251DBR is typically around 10-15 ns, but this can vary depending on the operating frequency and load capacitance.
• Can I use the SN74HC251DBR in a 3.3V system?
  Yes, the SN74HC251DBR is compatible with 3.3V systems, but you may need to adjust the input voltage levels and ensure that the output voltage levels are compatible with your system.