CD74HCT4351E datasheet by Texas Instruments

CD74HCT4351E Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the CD74HCT4351E?
  The maximum frequency of operation for the CD74HCT4351E is 30 MHz, but it can vary depending on the specific application, supply voltage, and output load.
• How do I ensure proper termination of the outputs to prevent signal reflections?
  To prevent signal reflections, it's recommended to use a pull-up or pull-down resistor of 1 kΩ to 10 kΩ at the output of each buffer, and a series resistor of 22 Ω to 47 Ω to match the impedance of the transmission line.
• What is the recommended power-on sequence for the CD74HCT4351E?
  To prevent latch-up and ensure proper operation, it's recommended to power up the VCC pin before applying any input signals, and to power down the VCC pin last when shutting down the device.
• Can I use the CD74HCT4351E as a level translator between 3.3V and 5V logic levels?
  Yes, the CD74HCT4351E can be used as a level translator between 3.3V and 5V logic levels, but ensure that the input signals are within the recommended voltage range and that the output load is compatible with the translated voltage level.
• How do I handle the enable inputs (1E, 2E, 3E, and 4E) when not in use?
  When not in use, it's recommended to tie the enable inputs (1E, 2E, 3E, and 4E) to VCC or GND, depending on the desired enable state, to prevent unwanted switching and reduce power consumption.