SN74HC595D datasheet by Texas Instruments

SN74HC595D Frequently Asked Questions (FAQs)

• What is the maximum clock frequency for the SN74HC595D?
  The maximum clock frequency for the SN74HC595D is 25 MHz, but it can vary depending on the operating voltage and temperature.
• How do I ensure that the output latch is enabled when the OE (Output Enable) pin is low?
  To ensure that the output latch is enabled when OE is low, the SRCLR (Shift Register Clear) pin must be high, and the RCLK (Register Clock) pin must be low.
• What is the purpose of the SRCLR pin, and how do I use it?
  The SRCLR pin is used to clear the shift register and output latch. When SRCLR is low, the shift register and output latch are cleared, and all outputs are set low. To use it, simply pull the SRCLR pin low to clear the registers, and then pull it high to allow normal operation.
• Can I use the SN74HC595D as a level shifter?
  Yes, the SN74HC595D can be used as a level shifter. Since it operates from 2V to 6V, you can use it to shift signals from a lower voltage domain to a higher voltage domain, or vice versa.
• How do I minimize power consumption when using the SN74HC595D?
  To minimize power consumption, ensure that the output enable (OE) pin is high when the device is not in use, and consider using a lower operating voltage if possible. Additionally, consider using a lower clock frequency if possible, as this can also reduce power consumption.