Level shifting circuit

Details Level shifting circuit Level shifting circuit

1994-09-21

1995-08-22

Westin, Edward P.

Electronic digital logic circuitry

Interface

Supply voltage level shifting

326 27, 326121, H03K 190175

Patent

active

054443962

ABSTRACT:
A level shifting circuit for converting a lower logic level into a higher logic level is arranged to prevent a large through current from flowing when the level of an input signal varies. A latch circuit for latching an input binary signal comprises first and second transistors to which there are connected in series third and fourth transistors, respectively, for blocking a current during the level shifting period. Fifth and sixth transistors having a small current capacity are connected parallel to the set of first and third transistors and the set of second and fourth transistors, respectively, to quickly respond to a level change. The fifth and sixth transistors may be dispensed with.

REFERENCES:
patent: 4506164 (1985-03-01), Higuchi
patent: 4656373 (1987-04-01), Plus
patent: 4978870 (1990-12-01), Chen
patent: 5204557 (1993-04-01), Nguyen
patent: 5223751 (1993-06-01), Simmons

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