The recommended operating voltage range for M74HCT157B1R is 4.5V to 5.5V, as per the datasheet. However, it's recommended to operate the device at a stable 5V supply for optimal performance.
The propagation delay of M74HCT157B1R is typically around 10ns. To handle this, ensure that your system design takes into account the delay when switching between inputs, and consider using clock stretching or synchronization techniques if necessary.
While the M74HCT157B1R is a 5V device, it can be used with a 3.3V microcontroller if you use level shifters or voltage translators to ensure the input signals are within the recommended voltage range. However, this may affect the device's performance and power consumption.
To ensure proper power and decoupling, use a 0.1uF ceramic capacitor between the VCC and GND pins, and a 10uF electrolytic capacitor between the power supply and GND. Additionally, ensure the power supply is stable and within the recommended voltage range.
The maximum frequency of operation for the M74HCT157B1R is typically around 30MHz. However, this may vary depending on the specific application and system design. It's recommended to consult the datasheet and perform simulations to determine the maximum frequency for your specific use case.
M74HCT157B1R datasheet
by STMicroelectronics
