CD54HCT157F3A datasheet by Texas Instruments

CD54HCT157F3A Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the CD54HCT157F3A?
  The recommended operating voltage range for the CD54HCT157F3A is 4.5V to 5.5V, with a typical operating voltage of 5V.
• How do I ensure proper termination of the outputs of the CD54HCT157F3A?
  To ensure proper termination of the outputs, it is recommended to use a pull-up or pull-down resistor of 1kΩ to 10kΩ, depending on the specific application and load requirements.
• What is the maximum frequency of operation for the CD54HCT157F3A?
  The maximum frequency of operation for the CD54HCT157F3A is 30MHz, although this can vary depending on the specific application and operating conditions.
• How do I handle power-up and power-down sequencing for the CD54HCT157F3A?
  It is 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 to prevent unwanted output states and ensures proper device operation.
• What is the maximum output current that the CD54HCT157F3A can sink or source?
  The maximum output current that the CD54HCT157F3A can sink or source is 6mA, although this can vary depending on the specific application and operating conditions.