This book discusses about current mode signaling which minimizes the delay of global interconnect with respect to voltage mode (repeater insertion technique). Current mode signaling circuits uses dynamic overdrive (strong drive while transition) principle to minimize static power dissipation. Single ended current mode signaling shows the improvement over voltage mode (repeater insertion technique) in terms of delay and power. For transmitting and receiving from both the sides bidirectional current mode signaling is discussed and it has good benefits over voltage mode signaling (repeater insertion technique).New technique of Differential current mode signaling is described in this book.