The maximum clock frequency of the SN74LVC257AD is typically 100 MHz, but it can vary depending on the specific application and operating conditions. It's recommended to check the device's timing characteristics and perform simulations to ensure reliable operation at the desired frequency.
To ensure signal integrity, it's essential to follow proper PCB design practices, such as using controlled impedance traces, minimizing signal routing distances, and adding termination resistors as needed. Additionally, consider using a signal integrity analysis tool to simulate and optimize the design.
Yes, the SN74LVC257AD is compatible with 3.3V systems. The recommended power supply voltage range is 1.65V to 3.6V, with a typical operating voltage of 3.3V. Ensure that the power supply is stable and within the recommended range to maintain reliable operation.
The enable inputs (E1 and E2) are active-low, meaning that the device is enabled when the inputs are low. Tie the enable inputs to a logic low (GND) to enable the device, or to a logic high (VCC) to disable it. You can also use these inputs to dynamically control the device's operation.
The propagation delay of the SN74LVC257AD is typically around 2.5 ns, but it can vary depending on the specific application and operating conditions. This delay should be considered when designing the system's timing budget, ensuring that the device's output is properly synchronized with other components in the system.
SN74LVC257AD datasheet
by Texas Instruments
