Electronic digital logic circuitry – Interface – Supply voltage level shifting
Patent
1994-08-10
1995-10-03
Westin, Edward P.
Electronic digital logic circuitry
Interface
Supply voltage level shifting
326 68, H03K 190175, H03K 19094
Patent
active
054555264
ABSTRACT:
A digital voltage shifter 101 is provided which includes an input buffer 200 having an input for receiving data logic high signals at a first voltage, a true output and a complementary output. A static random access memory cell 220 is also included which operates in response to a voltage supply providing a second voltage differing from the first voltage and having a first input coupled to the true output of the input buffer and a second input coupled to the complementary output of the input buffer. An output driver 230 is further included which operates in response to the second supply voltage and is coupled to an output of the memory cell, the output driver outputting the received logic signals at the second voltage.
REFERENCES:
patent: 3906254 (1975-09-01), Lane et al.
patent: 4450371 (1984-05-01), Bismarck
patent: 4486670 (1984-12-01), Chan et al.
patent: 4730131 (1988-03-01), Sauer
patent: 4978870 (1990-12-01), Chen et al.
Cirrus Logic Inc.
Roseen Richard
Westin Edward P.
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