SN54HC20J datasheet by Texas Instruments

SN54HC20J Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN54HC20J?
  The maximum operating frequency of the SN54HC20J is 25 MHz, but it can vary depending on the specific application and operating conditions.
• How do I handle the output enable (OE) pin in my design?
  The output enable (OE) pin is active-low, meaning that the outputs are enabled when OE is low and disabled when OE is high. You should connect OE to a logic low signal to enable the outputs, and to a logic high signal to disable them.
• What is the recommended power-on reset (POR) circuit for the SN54HC20J?
  Texas Instruments recommends using a 0.1 μF capacitor and a 1 kΩ resistor in series between the VCC pin and the GND pin to create a POR circuit. This ensures that the device powers up in a known state.
• How do I ensure that the SN54HC20J operates within its recommended operating conditions?
  To ensure that the SN54HC20J operates within its recommended operating conditions, you should ensure that the supply voltage (VCC) is within the range of 2 V to 6 V, and that the operating temperature is within the range of -40°C to 125°C.
• What is the maximum current that the SN54HC20J can sink or source?
  The maximum current that the SN54HC20J can sink or source is 25 mA per output pin, with a total current limit of 100 mA for all outputs combined.