The recommended operating voltage range for M74HCT374B1R is 4.5V to 5.5V, as specified in the datasheet. However, it's essential to note that the device can tolerate a voltage range of 3.0V to 7.0V, but the performance may vary.
To ensure signal integrity when using M74HCT374B1R in high-speed applications, it's crucial to follow proper PCB design practices, such as using controlled impedance traces, minimizing signal routing, and adding termination resistors as needed. Additionally, consider using a low-skew clock distribution network and ensuring that the device is properly decoupled.
While the M74HCT374B1R is specified for 5V operation, it can be used in a 3.3V system with some limitations. The device will still function, but the output voltage levels may not meet the required specifications, and the noise margin may be reduced. It's essential to carefully evaluate the system requirements and ensure that the device can meet the necessary performance criteria.
The maximum clock frequency supported by M74HCT374B1R is not explicitly stated in the datasheet. However, based on the device's propagation delay and setup/hold times, it's generally recommended to limit the clock frequency to around 100 MHz to ensure reliable operation.
When powering up or down, it's essential to ensure that the VCC supply voltage is stable and within the recommended range before applying clock or input signals. A recommended power-up sequence is to apply VCC first, followed by the clock and input signals. During power-down, remove the clock and input signals before reducing the VCC supply voltage.
M74HCT374B1R datasheet
by STMicroelectronics
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