The maximum clock frequency for the M54HC393F1 is 40 MHz, but it can vary depending on the operating voltage and temperature. It's recommended to check the timing characteristics in the datasheet for specific frequency limits.
To ensure proper power and decoupling, connect the VCC pin to a stable 2V to 6V power supply, and decouple the power supply lines with 0.1uF ceramic capacitors as close to the VCC pin as possible. Additionally, use a 10uF electrolytic capacitor for bulk decoupling.
The recommended input rise and fall time for the M54HC393F1 is 10ns to 100ns. Faster input transitions can cause internal shoot-through currents, which may affect the device's performance and reliability.
Yes, the M54HC393F1 can operate in a 3.3V system, but the output voltage will be limited to 3.3V. Ensure that the input signals are also limited to 3.3V to prevent damage to the device.
The asynchronous reset input (MR) should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to ensure that the device is properly reset. A low-level input on MR will reset the device, and a high-level input will allow normal operation.
M54HC393F1 datasheet
by STMicroelectronics
