The maximum clock frequency of the SN74LS147N is typically around 30-40 MHz, but it can vary depending on the specific application and operating conditions. It's recommended to check the device's timing specifications and perform thorough testing to ensure reliable operation at the desired frequency.
To ensure proper power supply and decoupling, make sure to provide a stable voltage supply within the recommended range (4.75V to 5.25V), and use a decoupling capacitor (typically 0.1uF to 1uF) as close to the device's power pins as possible. Additionally, use a low-ESR capacitor and follow good PCB design practices to minimize noise and voltage drops.
No, the SN74LS147N is a 5V device and is not compatible with 3.3V systems. Using it in a 3.3V system may result in unreliable operation or damage to the device. If you need a 3.3V-compatible device, consider using a different part number or a voltage translator.
The output enable (OE) pin is active-low, meaning that the outputs are enabled when OE is low (typically connected to GND) and disabled when OE is high (typically connected to VCC). Make sure to connect the OE pin correctly to ensure proper output behavior.
The SN74LS147N can sink or source up to 24mA of current per output pin, but it's recommended to limit the output current to 16mA or less to ensure reliable operation and prevent overheating.
SN74LS147N datasheet
by Texas Instruments
