Slew rate at buffers by isolating predriver from driver

A method comprising:

• generating pre-driving signals using a pre-driver based on control signals provided by a control circuit, the pre-driver having pre-driver power and ground connections;
• generating an output signal using a driver based on the pre-driving signals at an output pad, the output signal having a slew rate, the driver having driver power and ground connections;
• and
• reducing noise at the pre-driving signals using a low pass filter placed between the pre-driver power connection and the driver power connection and between the pre-driver ground connection and the driver ground connection, the low pass filter having a cut-off frequency corresponding to noise frequency.

A device comprising:

• a package having package power and ground planes and output pins to interface to a board having board power and ground planes;
• an integrated circuit on a die coupled to the package, the integrated circuit having a buffer circuit, the buffer circuit comprising:
• a pre-driver coupled to a control circuit to generate pre-driving signals based on control signals provided by the control circuit, the pre-driver having pre-driver power and ground connections,
• a driver coupled to the pre-driver to generate an output signal based on the pre-driving signals at an output pad, the output signal having a slew rate, the driver having driver power and ground connections, and
• a low pass filter coupled between the pre-driver power connection and the driver power connection and between the pre-driver ground connection and the driver ground connection to reduce noise at the pre-driving signals, the low pass filter having a cut-off frequency corresponding to noise frequency.