SN74HC595DR datasheet by Texas Instruments

SN74HC595DR Frequently Asked Questions (FAQs)

• What is the maximum clock frequency for the SN74HC595DR?
  The maximum clock frequency for the SN74HC595DR is 25 MHz, but it can vary depending on the operating voltage and temperature.
• How do I ensure that the output pins are in a known state during power-up?
  To ensure that the output pins are in a known state during power-up, you can use the output enable (OE) pin to disable the outputs during power-up, and then enable them once the device is fully powered up.
• What is the purpose of the MR (Master Reset) pin?
  The MR (Master Reset) pin is used to asynchronously reset the shift register and output latch, clearing all outputs to a low state.
• Can I use the SN74HC595DR as a level shifter?
  Yes, the SN74HC595DR can be used as a level shifter, but it's not recommended as it's not designed for that purpose. The device is primarily intended for serial-to-parallel data conversion.
• How do I handle the latency between the clock signal and the output data?
  The latency between the clock signal and the output data is due to the internal clock-to-output delay. You can account for this delay by adding a clock-to-output delay buffer or by using a faster clock frequency.