SN74HC139PWR datasheet by Texas Instruments

SN74HC139PWR Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN74HC139PWR?
  The maximum frequency of operation for the SN74HC139PWR is 25 MHz.
• How do I ensure that the SN74HC139PWR is properly powered?
  The SN74HC139PWR requires a power supply voltage (VCC) of 2.0 V to 6.0 V, and it is recommended to use a decoupling capacitor of 0.1 μF to 1 μF between VCC and GND to ensure proper power supply decoupling.
• What is the maximum current that the SN74HC139PWR can sink or source?
  The SN74HC139PWR can sink or source up to 25 mA of current per output pin.
• How do I handle the enable inputs (E1 and E2) of the SN74HC139PWR?
  The enable inputs (E1 and E2) are active-low, meaning that they must be pulled low to enable the decoder/demultiplexer. When E1 and E2 are high, the outputs are in a high-impedance state.
• What is the propagation delay of the SN74HC139PWR?
  The propagation delay of the SN74HC139PWR is typically around 10 ns to 20 ns, depending on the operating frequency and output load.