SN74HC175DBR datasheet by Texas Instruments

SN74HC175DBR Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74HC175DBR can handle?
  The maximum clock frequency of the SN74HC175DBR 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 SN74HC175DBR is properly powered and decoupled?
  To ensure proper power and decoupling, use a 0.1 μF ceramic capacitor between VCC and GND, and a 10 μF electrolytic capacitor between VCC and GND. Place the capacitors as close to the device as possible. Also, ensure that the power supply voltage is within the recommended range of 2 V to 6 V.
• What is the recommended input rise and fall time for the SN74HC175DBR?
  The recommended input rise and fall time for the SN74HC175DBR is 10 ns to 100 ns. Faster input transitions can cause internal ringing and affect the device's performance.
• Can I use the SN74HC175DBR in a 3.3 V system?
  Yes, the SN74HC175DBR can operate in a 3.3 V system. The device is specified to operate from 2 V to 6 V, making it suitable for 3.3 V systems. However, ensure that the input signals are within the recommended voltage range and that the output loads are compatible with the 3.3 V system.
• 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., 1 kΩ) if not used. This ensures that the device is not inadvertently cleared. If the CLR input is used, ensure that it is driven by a signal that meets the input voltage and timing requirements.