SN74LS682NSR datasheet by Texas Instruments

SN74LS682NSR Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN74LS682NSR?
  The maximum operating frequency of the SN74LS682NSR is 30 MHz, but it can vary depending on the system design and load conditions.
• How do I handle the output enable (OE) pin in my design?
  The output enable (OE) pin should be connected to a logic low (GND) to enable the outputs, and to a logic high (VCC) to disable the outputs. Leaving the OE pin floating can cause unpredictable behavior.
• What is the recommended power-on sequence for the SN74LS682NSR?
  The recommended power-on sequence is to apply power to the VCC pin first, followed by the input signals. This helps to prevent latch-up and ensures proper device operation.
• Can I use the SN74LS682NSR in a 3.3V system?
  The SN74LS682NSR is a 5V device, but it can be used in a 3.3V system with some limitations. The output voltage will be lower, and the device may not meet the specified timing parameters. It's recommended to use a level translator or a voltage regulator to ensure proper operation.
• How do I handle the thermal considerations for the SN74LS682NSR?
  The SN74LS682NSR has a maximum junction temperature of 150°C. To ensure reliable operation, the device should be mounted on a PCB with a thermal pad, and the ambient temperature should be kept below 85°C. Proper thermal design and heat sinking may be required for high-power applications.