SN74HC175NSR datasheet by Texas Instruments

SN74HC175NSR Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74HC175NSR can handle?
  The maximum clock frequency of the SN74HC175NSR is 40 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 SN74HC175NSR is properly powered and decoupled?
  To ensure proper power and decoupling, connect the VCC pin to a stable 2-6V power supply, and decouple the power pins with 0.1uF ceramic capacitors. Additionally, use a 10uF bulk capacitor to filter out noise and voltage drops.
• What is the maximum current that the SN74HC175NSR can sink or source?
  The SN74HC175NSR can sink or source up to 25mA of current per output pin, but it's recommended to limit the current to 10mA or less to ensure reliable operation and prevent overheating.
• How do I handle the asynchronous clear (CLR) input?
  The asynchronous clear (CLR) input should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to prevent accidental clearing of the registers. When CLR is low, the registers are cleared, and when CLR is high, the registers operate normally.
• What is the propagation delay of the SN74HC175NSR?
  The propagation delay of the SN74HC175NSR varies depending on the operating voltage and temperature. Typically, the propagation delay is around 10-20ns, but it can be as high as 50ns at lower voltages and higher temperatures.