SN74LS293DR datasheet by Texas Instruments

SN74LS293DR Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74LS293DR can handle?
  The maximum clock frequency of the SN74LS293DR is 30 MHz, but it can vary depending on the operating voltage and load capacitance. It's recommended to check the timing characteristics in the datasheet for specific frequency limits.
• Can I use the SN74LS293DR as a binary counter?
  Yes, the SN74LS293DR can be used as a binary counter. It has a built-in binary counter that can count up to 2^4 (16) states. You can use the clock input (CP) to increment the counter and the reset input (MR) to clear the counter.
• How do I reset the counter to zero?
  To reset the counter to zero, you need to assert the reset input (MR) low. This will clear the counter and set it to zero. You can also use the reset input to preset the counter to a specific value by applying the desired value to the inputs (A, B, C, and D) while asserting the reset input low.
• What is the power consumption of the SN74LS293DR?
  The power consumption of the SN74LS293DR depends on the operating frequency, voltage, and load conditions. According to the datasheet, the typical power consumption is around 15 mW at 5V and 10 MHz clock frequency. However, it's recommended to check the power consumption calculation in the datasheet for specific operating conditions.
• Can I use the SN74LS293DR with a 3.3V power supply?
  Yes, the SN74LS293DR can operate with a 3.3V power supply. However, the maximum clock frequency may be limited to 20 MHz at 3.3V. You should check the datasheet for specific operating conditions and timing characteristics at 3.3V.