CD74HC190E datasheet by Texas Instruments

CD74HC190E Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD74HC190E can handle?
  The CD74HC190E can handle clock frequencies up to 25 MHz.
• How do I ensure that the CD74HC190E is properly reset during power-up?
  To ensure proper reset, connect the MR (Master Reset) pin to a 10 kΩ pull-up resistor to VCC, and then to a capacitor to ground. This will ensure that the device is properly reset during power-up.
• What is the recommended operating voltage range for the CD74HC190E?
  The recommended operating voltage range for the CD74HC190E is 2V to 6V.
• How do I cascade multiple CD74HC190E devices to create a larger counter?
  To cascade multiple CD74HC190E devices, connect the TC (Terminal Count) output of one device to the CP (Clock Pulse) input of the next device. This will allow the devices to count in sequence.
• What is the maximum output current that the CD74HC190E can sink or source?
  The CD74HC190E can sink or source up to 25 mA of current per output pin.