SN54S157J datasheet by Texas Instruments

SN54S157J Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN54S157J?
  The maximum frequency of operation for the SN54S157J is typically around 40 MHz, but it can vary depending on the specific application and operating conditions.
• How do I ensure that the SN54S157J is properly powered and decoupled?
  To ensure proper operation, the SN54S157J should be powered with a stable voltage source between 4.5V and 5.5V, and decoupled with a 0.1uF ceramic capacitor between VCC and GND, as close to the device as possible.
• What is the maximum current that the SN54S157J can sink or source?
  The SN54S157J can sink up to 16mA and source up to 64mA per output, but it's recommended to limit the current to 10mA or less to ensure reliable operation.
• How do I handle the enable inputs (E1 and E2) when not using them?
  When not using the enable inputs, they should be tied to the active-low state (GND) to ensure that the device is enabled and functioning properly.
• Can I use the SN54S157J as a level shifter or voltage translator?
  While the SN54S157J can operate with a wide range of input voltages, it's not recommended to use it as a level shifter or voltage translator, as it's not designed for this purpose and may not provide reliable operation.