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A novel mixed-voltage I/O buffer only used thin gate-oxide transistors is presented in this paper. This new design can successfully avoid the undesired leakage current paths and the gate-oxide reliability that occur in the conventional mixed-voltage CMOS I/O buffers. With the use of a bootstrapped circuit to increase the gate voltage of the related NMOS devices, the power supply voltage could be transmitted...
A novel circuit of mixed-voltage I/O buffer is proposed in this work. The new buffer uses NMOS driver transistors instead of PMOS-driver, which is commonly used in the prior designs. With the help of a bootstrapped circuit, the buffer is free of the threshold voltage loss problem originated from NMOS driver. The proposed buffer can overcome the problem of leakage current paths and gate-oxide reliability...
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