TC74VHC595F(EL,K,F - Toshiba

TC74VHC595F(EL,K,F Frequently Asked Questions (FAQs)

• What is the maximum clock frequency for the TC74VHC595F?
  The maximum clock frequency for the TC74VHC595F is 80 MHz, according to the datasheet. However, it's recommended to derate the clock frequency based on the capacitive load and operating conditions to ensure reliable operation.
• How do I ensure that the output pins are in a high-impedance state during power-up?
  To ensure that the output pins are in a high-impedance state during power-up, you can use an external pull-up resistor on the OE (Output Enable) pin. This will keep the outputs in a high-impedance state until the OE pin is actively driven low.
• Can I use the TC74VHC595F as a level shifter?
  Yes, the TC74VHC595F can be used as a level shifter. Since it's a 5V-tolerant device, you can use it to shift signals from a 5V domain to a 3.3V domain or vice versa. However, ensure that the input signals are within the recommended voltage range and that the output voltage is within the tolerance of the receiving device.
• What is the maximum current that the output pins can sink or source?
  The maximum current that the output pins of the TC74VHC595F can sink or source is 25 mA per pin. However, it's recommended to limit the current to 10 mA per pin to ensure reliable operation and to prevent overheating.
• How do I handle the latency between the clock signal and the output signal?
  The TC74VHC595F has a latency of 10 ns between the clock signal and the output signal. To handle this latency, you can add a delay element in your design or use a clock signal that is synchronized with the output signal. Alternatively, you can use a faster clock signal and use the latency to your advantage in your design.