CD74HCT147E datasheet by Texas Instruments

CD74HCT147E Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD74HCT147E can handle?
  The CD74HCT147E can handle clock frequencies up to 30 MHz.
• How do I ensure that the CD74HCT147E is properly powered?
  The CD74HCT147E requires a power supply voltage (VCC) of 4.5V to 5.5V, and it's recommended to use a decoupling capacitor of 0.1uF to 1uF between VCC and GND to ensure proper power supply decoupling.
• What is the propagation delay of the CD74HCT147E?
  The propagation delay of the CD74HCT147E is typically around 10ns to 15ns, depending on the operating conditions and load capacitance.
• Can I use the CD74HCT147E in a 3.3V system?
  Yes, the CD74HCT147E can operate at 3.3V, but the output voltage levels may not be compatible with 3.3V logic. It's recommended to use a level translator or a voltage regulator to ensure compatibility.
• How do I handle the enable inputs (ENP and ENN) of the CD74HCT147E?
  The enable inputs (ENP and ENN) are active-low, meaning that the encoder is enabled when ENP and ENN are both low. It's recommended to tie ENP and ENN to GND or VCC through a pull-down resistor to ensure proper operation.