CD74HC173PWR datasheet by Texas Instruments

CD74HC173PWR Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with CD74HC173PWR?
  The maximum clock frequency for CD74HC173PWR is 25 MHz, but it can vary depending on the specific application and operating conditions. It's recommended to check the device's timing specifications and perform thorough testing to ensure reliable operation.
• How do I handle the asynchronous clear input (CLR) in CD74HC173PWR?
  The asynchronous clear input (CLR) in CD74HC173PWR is active-low, meaning it should be pulled low to clear the counters. It's essential to ensure that CLR is properly debounced and synchronized with the clock signal to avoid unintended clearing of the counters.
• Can I use CD74HC173PWR in a 5V system?
  While CD74HC173PWR is specified for 2V to 6V operation, it's not recommended to use it in a 5V system without proper voltage regulation and noise filtering. The device's performance and reliability may be compromised at higher voltages, and it's essential to follow the recommended operating conditions.
• How do I ensure proper power sequencing when using CD74HC173PWR?
  To ensure proper power sequencing, it's recommended to power up the VCC pin before applying any input signals, and to power down the VCC pin after removing all input signals. This helps prevent unwanted device behavior and potential damage.
• What is the recommended layout and routing for CD74HC173PWR to minimize noise and signal integrity issues?
  To minimize noise and signal integrity issues, it's recommended to follow good PCB design practices, such as keeping clock and data lines short and shielded, using decoupling capacitors, and avoiding vias and sharp corners in the signal paths. Additionally, it's essential to follow the recommended pinout and package-specific layout guidelines.