SN74LS645-1DW datasheet by Texas Instruments

SN74LS645-1DW Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the SN74LS645-1DW?
  The maximum operating frequency of the SN74LS645-1DW is 30 MHz, but it can vary depending on the specific application and operating conditions.
• How do I ensure reliable operation of the SN74LS645-1DW in high-temperature environments?
  To ensure reliable operation in high-temperature environments, it is recommended to follow proper thermal management practices, such as providing adequate heat sinking and airflow, and ensuring that the device is operated within its specified temperature range (-40°C to 85°C).
• What is the recommended power-on sequence for the SN74LS645-1DW?
  The recommended power-on sequence for the SN74LS645-1DW is to apply power to the VCC pin before applying any input signals, and to ensure that the power supply is stable and within the specified voltage range (4.75V to 5.25V) before applying any input signals.
• How do I handle bus contention when using the SN74LS645-1DW as a bus transceiver?
  To handle bus contention when using the SN74LS645-1DW as a bus transceiver, it is recommended to use a bus arbiter or a bus controller to manage access to the bus, and to ensure that only one device is driving the bus at a time.
• What is the maximum capacitive load that the SN74LS645-1DW can drive?
  The maximum capacitive load that the SN74LS645-1DW can drive is 100 pF, but it is recommended to limit the capacitive load to 50 pF or less to ensure reliable operation.