SN74AHCT157DR datasheet by Texas Instruments

SN74AHCT157DR Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN74AHCT157DR?
  The maximum operating frequency of the SN74AHCT157DR is 100 MHz, but it can vary depending on the system design and capacitive loading.
• How do I ensure signal integrity when using the SN74AHCT157DR?
  To ensure signal integrity, use proper PCB design techniques such as impedance matching, signal routing, and decoupling. Also, consider using series termination resistors and/or parallel termination capacitors to reduce signal reflections and ringing.
• Can I use the SN74AHCT157DR in a 3.3V system?
  Yes, the SN74AHCT157DR is compatible with 3.3V systems. It has a wide operating voltage range of 4.5V to 5.5V, but it can also operate at 3.3V with some performance degradation. Consult the datasheet for specific details on 3.3V operation.
• How do I handle power sequencing when using the SN74AHCT157DR?
  To avoid latch-up and ensure proper operation, ensure that the power supply voltage (VCC) is applied before the input signals. Also, ensure that the power supply voltage is stable and within the recommended operating range before applying input signals.
• What is the recommended storage temperature range for the SN74AHCT157DR?
  The recommended storage temperature range for the SN74AHCT157DR is -65°C to 150°C. Storage outside this range may affect the device's reliability and performance.