Patent ID: 7598772

Claim:
A signal driver having a configurable slew rate, comprising: plural partial drivers configured to generate drive signals based on time constants established by corresponding plural time-delay networks associated therewith, the plural time-delay networks comprising a tapped RC delay line; and a slew rate selector coupled to said plural time-delay networks and configured to provide a common signal thereto to cause said plural time-delay networks to achieve target time constants, said target time constants causing said partial drivers to be generated such that said signal driver achieves said selectable aggregate slew rate, wherein said slew rate selector couples said common signal to a first tap on said tapped RC delay line, said first tap being coupled to an input of a first of said plural partial drivers, said common signal being coupled to a second of said plural partial drivers via a second tap on said tapped RC delay line, whereby said common signal coupled to said second of said plural partial drivers is delayed by delay of said first tap plus delay between said first and second taps.