SN74HC165PWT datasheet by Texas Instruments

SN74HC165PWT Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the SN74HC165PWT?
  The maximum clock frequency is typically 25 MHz, but it can vary depending on the specific application and operating conditions. It's recommended to check the device's timing characteristics and ensure that the clock frequency is within the specified range.
• How do I ensure that the data is properly shifted out of the shift register?
  To ensure that the data is properly shifted out of the shift register, make sure to pulse the clock input (CLK) while the shift/load input (SH/LD) is high. This will shift the data out of the register. Also, ensure that the output enable input (OE) is low to enable the output buffers.
• What is the purpose of the serial input (SER) pin?
  The serial input (SER) pin is used to serially load data into the shift register. When the shift/load input (SH/LD) is low, the data on the serial input pin is loaded into the register on the next clock pulse.
• Can I use the SN74HC165PWT as a parallel-in, parallel-out shift register?
  Yes, the SN74HC165PWT can be used as a parallel-in, parallel-out shift register. To do this, connect the parallel inputs (P0-P7) to the desired data sources, and then pulse the clock input (CLK) while the shift/load input (SH/LD) is high. This will load the parallel data into the register.
• What is the power consumption of the SN74HC165PWT?
  The power consumption of the SN74HC165PWT depends on the operating frequency, voltage, and load conditions. According to the datasheet, the typical power consumption is around 20-30 mW at 5V and 1 MHz clock frequency. However, this can vary depending on the specific application.