SN54ALS138AJ datasheet by Texas Instruments

SN54ALS138AJ Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for the SN54ALS138AJ?
  The maximum frequency of operation for the SN54ALS138AJ is 40 MHz.
• How do I ensure that the chip select (CS) input is properly decoded?
  To ensure proper decoding of the chip select (CS) input, make sure to connect the CS input to a valid logic level (either VCC or GND) and use a pull-up or pull-down resistor to prevent floating inputs.
• What is the recommended power-on reset (POR) circuit for the SN54ALS138AJ?
  A simple POR circuit can be implemented using a resistor-capacitor (RC) network connected to the VCC pin, with a diode and a pull-up resistor to ensure a clean power-on reset.
• How do I handle bus contention when using the SN54ALS138AJ in a multi-master system?
  To handle bus contention, use a bus arbiter or a bus controller to manage access to the bus, and consider using a bus buffer or a bus repeater to improve signal integrity.
• What is the maximum capacitive load that the SN54ALS138AJ can drive?
  The SN54ALS138AJ can drive a maximum capacitive load of 100 pF, but it's recommended to keep the load capacitance as low as possible to ensure reliable operation.