Integrated circuits for low power dissipation in signaling betwe

Details Integrated circuits for low power dissipation in signaling betwe Integrated circuits for low power dissipation in signaling betwe

1996-10-09

1998-12-22

Westin, Edward P.

Electronic digital logic circuitry

Interface

Supply voltage level shifting

326 68, H03K 190175, H03K 19094

Patent

active

058523707

ABSTRACT:
An integrated circuit (110) includes, on a single chip, distinct supply voltage terminals and internal on-chip supply conductors connected respectively thereto, including a ground terminal (GND) and terminals for first and second supply voltages (VCC3, VCC5). A first inverter (5526) is connected between first supply voltage (3.3v) and ground and has a first inverter input (IN) and a first inverter output. A second inverter (5518) is connected between second supply voltage (5v) and ground and has a second inverter input (INT) and a second inverter output (OUT). A first feedback transistor (5520) has connections to the second supply voltage (5v), and to the second inverter input (INT) and the second inverter output (OUT). A second feedback transistor (5524) has connections to ground, and to the second inverter input (INT) and the second inverter output (OUT). First and second open-type inverters (5522, 5528) are connected to ground and each of the open-type inverters has an input and output. The input of the first open-type inverter (5522) is connected to the first inverter (5526) input (IN), and the output of the first open-type inverter (5522) is connected to the second inverter input (INT). The input of the second open-type inverter (5528) is connected to the first inverter (5526) output, and the output of the second open-type inverter (5528) is connected to the second inverter (5518) output (OUT). Other devices, systems and methods are also disclosed.

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