SN74HC164PWRG4 datasheet by Texas Instruments

SN74HC164PWRG4 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the SN74HC164PWRG4?
  The maximum clock frequency for the SN74HC164PWRG4 is 25 MHz, but it can vary depending on the operating voltage and temperature. It's recommended to check the timing characteristics in the datasheet for specific frequency limits.
• How do I ensure that the shift register outputs are stable during power-up?
  To ensure stable outputs during power-up, it's recommended to add a pull-up or pull-down resistor to the output pins, and also to use a power-on reset (POR) circuit to reset the shift register after power-up.
• Can I use the SN74HC164PWRG4 as a serial-to-parallel converter?
  Yes, the SN74HC164PWRG4 can be used as a serial-to-parallel converter. The shift register can be loaded with serial data, and then the parallel output can be accessed by taking the clock input low.
• What is the maximum current that can be sourced or sunk by the output pins?
  The maximum current that can be sourced or sunk by the output pins of the SN74HC164PWRG4 is 25 mA. However, it's recommended to check the absolute maximum ratings in the datasheet for specific current limits.
• How do I handle the clock input when the shift register is not being clocked?
  When the shift register is not being clocked, it's recommended to keep the clock input low to prevent unwanted clocking. Alternatively, the clock input can be tied to VCC or GND, but this may affect the power consumption of the device.