SN74HC125DR datasheet by Texas Instruments

SN74HC125DR Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC125DR?
  The maximum frequency of operation for the SN74HC125DR is typically around 100 MHz, but this can vary depending on the specific application and operating conditions.
• How do I ensure that the SN74HC125DR is properly powered and decoupled?
  To ensure proper operation, the SN74HC125DR should be powered with a stable voltage supply (typically 5V) and decoupled with a 0.1uF ceramic capacitor between VCC and GND, as close to the device as possible.
• What is the input voltage threshold for the SN74HC125DR?
  The input voltage threshold for the SN74HC125DR is typically around 2.4V for a logic high and 0.8V for a logic low, but this can vary depending on the specific application and operating conditions.
• Can I use the SN74HC125DR in a 3.3V system?
  Yes, the SN74HC125DR can be used in a 3.3V system, but the output voltage will be limited to around 3.3V. Additionally, the input voltage threshold may be affected, and the device may not operate at the same frequency as it would in a 5V system.
• How do I handle thermal considerations for the SN74HC125DR?
  The SN74HC125DR has a maximum junction temperature of 150°C. To ensure reliable operation, the device should be mounted on a suitable heat sink or PCB layout, and the ambient temperature should be kept below 85°C.