SN74HCT245DBR datasheet by Texas Instruments

SN74HCT245DBR Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HCT245DBR?
  The maximum frequency of operation for the SN74HCT245DBR is 50 MHz.
• Can I use the SN74HCT245DBR in a 5V system?
  Yes, the SN74HCT245DBR is compatible with 5V systems, but it's recommended to use a voltage regulator to ensure a stable 4.5V to 5.5V supply voltage.
• How do I handle the heat dissipation of the SN74HCT245DBR?
  The SN74HCT245DBR has a thermal pad on the bottom of the package, which should be connected to a copper plane on the PCB to dissipate heat. Additionally, ensure good airflow and consider using a heat sink if the device is expected to operate at high temperatures.
• Can I use the SN74HCT245DBR in a 3.3V system?
  No, the SN74HCT245DBR is not compatible with 3.3V systems. It's designed to operate at 4.5V to 5.5V, and using it at 3.3V may result in unreliable operation or damage to the device.
• What is the maximum current that the SN74HCT245DBR can sink or source?
  The SN74HCT245DBR can sink or source up to 6mA per output pin, and up to 32mA total for all outputs combined.