SN74LS93DR datasheet by Texas Instruments

SN74LS93DR Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the SN74LS93DR can handle?
  The maximum clock frequency of the SN74LS93DR is 32 MHz, but it can vary depending on the specific application and operating conditions.
• How do I ensure that the SN74LS93DR is properly powered and decoupled?
  To ensure proper power and decoupling, use a 5V power supply, add a 0.1uF ceramic capacitor between VCC and GND, and keep the power traces short and wide to minimize noise and voltage drops.
• What is the maximum output current that the SN74LS93DR can sink or source?
  The SN74LS93DR can sink up to 16mA and source up to 4mA per output pin, but it's recommended to keep the output current below 10mA to ensure reliable operation.
• How do I handle the asynchronous reset input (R0, R1, R2, R3) of the SN74LS93DR?
  The asynchronous reset inputs (R0, R1, R2, R3) should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to ensure proper reset operation. Avoid leaving these inputs floating.
• Can I use the SN74LS93DR in a 3.3V system?
  No, the SN74LS93DR is designed to operate at 5V and is not compatible with 3.3V systems. Using it at 3.3V may result in unreliable operation or damage to the device.