CMOS input level-shifting pad

Details CMOS input level-shifting pad CMOS input level-shifting pad

1994-07-28

1996-04-09

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

326 63, 326 80, 326 81, H03K 190175

Patent

active

055065350

ABSTRACT:
An I/O circuit that provides bidirectional signal access to an integrated circuit (IC) core has voltage transformation capability to manage different voltage requirements. Although the I/O circuit and the core are fabricated from the same IC process, the I/O circuit can operate at non-process constrained voltages. The I/O circuit provides an output signal at the necessary voltage level to drive a component in the discrete environment while limiting the voltage supplied to the IC core to the maximum device voltage defined by the selected process.

REFERENCES:
patent: 5023487 (1991-06-01), Wellheuser et al.
patent: 5352942 (1994-10-01), Tanaka et al.

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