CD74HCT253E datasheet by Texas Instruments

CD74HCT253E Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of CD74HCT253E?
  The maximum operating frequency of CD74HCT253E is 30 MHz, but it can vary depending on the output load and supply voltage.
• How do I ensure signal integrity when using CD74HCT253E in a high-speed application?
  To ensure signal integrity, use a low-impedance output driver, minimize trace lengths, and use proper termination and decoupling techniques. Additionally, consider using a series resistor to reduce ringing and overshoot.
• Can I use CD74HCT253E in a 5V system?
  Yes, CD74HCT253E is compatible with 5V systems, but it's essential to ensure that the input signals are within the recommended voltage range (VCC - 1.5V to VCC + 0.5V) to prevent damage to the device.
• How do I handle power-up and power-down sequencing with CD74HCT253E?
  To prevent damage or incorrect operation, ensure that the power supply (VCC) is stable and within the recommended range before applying input signals. Also, ensure that the output enable (OE) pin is in a defined state during power-up and power-down.
• What is the recommended output load capacitance for CD74HCT253E?
  The recommended output load capacitance for CD74HCT253E is 50 pF, but it can vary depending on the specific application and operating frequency. Excessive load capacitance can affect signal integrity and device performance.