CD74HC194E datasheet by Texas Instruments

CD74HC194E Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD74HC194E can handle?
  The CD74HC194E can handle clock frequencies up to 25 MHz.
• How do I ensure that the CD74HC194E 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 add a 0.1 μF capacitor between MR and GND to filter out noise.
• What is the recommended operating voltage range for the CD74HC194E?
  The recommended operating voltage range for the CD74HC194E is 2 V to 6 V, with a typical operating voltage of 5 V.
• How do I interface the CD74HC194E with a microcontroller?
  The CD74HC194E can be interfaced with a microcontroller using a serial interface, such as SPI or I2C. Connect the CD74HC194E's clock input (CLK) to the microcontroller's clock output, and the CD74HC194E's data input (D) to the microcontroller's data output.
• What is the maximum current that the CD74HC194E can sink or source?
  The CD74HC194E can sink or source up to 25 mA of current per output pin.