SN74HC253NSR datasheet by Texas Instruments

SN74HC253NSR Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN74HC253NSR?
  The maximum operating frequency of the SN74HC253NSR is 50 MHz, but it can vary depending on the specific application and operating conditions.
• How do I handle the power-up and power-down sequencing of the SN74HC253NSR?
  It is recommended to power up the VCC pin before the input signals and power down the VCC pin after the input signals to prevent unwanted output states.
• What is the recommended operating voltage range for the SN74HC253NSR?
  The recommended operating voltage range for the SN74HC253NSR is 2 V to 6 V, with a typical operating voltage of 5 V.
• How do I ensure the SN74HC253NSR is properly decoupled from the power supply?
  It is recommended to use a 0.1 μF ceramic capacitor between the VCC pin and the GND pin to decouple the power supply and reduce noise.
• What is the maximum input current that the SN74HC253NSR can handle?
  The maximum input current that the SN74HC253NSR can handle is ±20 mA, but it is recommended to keep the input current below ±10 mA to ensure reliable operation.