Low amplitude differential output circuit and serial transmission interface using the same
AssigneeNEC Electronics Corporation
InventorSeiichi Watarai
Life of this patent
Estimating the term…
Abstract
A low amplitude differential output circuit includes a pre-buffer circuit configured to output a main buffer drive signal of a-first drive signal and a second drive signal which are complimentary signals, as a differential signal; and a main buffer circuit connected with the pre-buffer circuit to output a differential output signal in response to the main buffer drive signal. Each of the first drive signal and the second drive signal has an amplitude between a first voltage and a second voltage, and the first drive signal and the second drive signal take a same voltage between the first voltage and a middle voltage between the first voltage and the second voltage.
Claims20
A low amplitude differential output circuit comprising:
- a pre-buffer circuit configured to output a main buffer drive signal of a first drive signal and a second drive signal which are complimentary signals, as a differential signal;
- and
- a main buffer circuit connected with said pre-buffer circuit to output a differential output signal in response to said main buffer drive signal,
- wherein each of said first drive signal and said second drive signal has an amplitude between a first voltage and a second voltage, and
- said first drive signal and said second drive signal take a same voltage between said first voltage and a middle voltage between said first voltage and said second voltage.
A low amplitude differential output circuit comprising:
- a pre-buffer circuit configured to output a main buffer drive signal of a first drive signal and a second drive signal which are complimentary signals, as a differential signal;
- and
- a main buffer circuit connected with said pre-buffer circuit to output a differential output signal in response to said main buffer drive signal,
- wherein each of said first drive signal and said second drive signal has an amplitude between a first voltage and a second voltage, and
- said main buffer drive signal is outputted such that one of said first and second drive signals is raised and then the other is fallen.
A low amplitude differential output circuit comprising:
- a pre-buffer circuit configured to output a main buffer drive signal of a first drive signal and a second drive signal which are complimentary signals, as a differential signal;
- and
- a main buffer circuit connected with said pre-buffer circuit to output a differential output signal in response to said main buffer drive signal,
- wherein each of said first drive signal and said second drive signal has an amplitude between a first voltage and a second voltage, and
- said main buffer drive signal is outputted such that one of said first and second drive signals is fallen and then the other is raised.
Dependencies are inferred from the claim text.