74HC594DB,118 datasheet by NXP Semiconductors

74HC594DB,118 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the 74HC594DB,118?
  The maximum clock frequency for the 74HC594DB,118 is 25 MHz, but it can vary depending on the operating voltage and temperature. It's recommended to check the timing diagrams and specifications in the datasheet for more information.
• How do I ensure that the 74HC594DB,118 is properly powered and decoupled?
  To ensure proper power and decoupling, connect the VCC pin to a stable 2.0-6.0 V power supply, and decouple the power supply lines with 100 nF capacitors as close to the device as possible. Additionally, use a 10 μF capacitor for bulk decoupling.
• What is the maximum current that can be sourced or sunk by the 74HC594DB,118 outputs?
  The maximum current that can be sourced or sunk by the 74HC594DB,118 outputs is 25 mA per output, with a total current limit of 100 mA for all outputs combined.
• How do I handle the asynchronous reset (SRCLR) input during power-up?
  During power-up, the asynchronous reset (SRCLR) input should be held low for at least 10 ns to ensure that the device is properly reset. After power-up, the SRCLR input can be released to allow normal operation.
• What is the recommended layout and routing for the 74HC594DB,118 to minimize noise and signal integrity issues?
  To minimize noise and signal integrity issues, use a solid ground plane, keep signal traces short and away from power traces, and use a consistent impedance for signal traces. Additionally, use a low-inductance capacitor for decoupling and place it close to the device.