The UC5603 provides a disconnect feature which, when opened or driven high, will disconnect all terminating resistors, and disables the regulator; greatly reducing standby power. The output channels remain high impedance even without Termpwr applied. A low channel capacitance of 6pF allows units at interim points of the bus to have little to no effect on the signal integrity. Functionally the UC5603 is similar to its predecessor, the UC5601 - 18 line Active Terminator. Several electrical enhancements were incorporated in the UC5603, such as a sink/source regulator output stage to accommodate all signal lines at +5V, while the regulator remains at its nominal value, reduced channel capacitance to 6pF typical, and as with the UC5601, custom power packages are utilized to allow normal operation at full power conditions (1.2 watts).