Downlink level shifting circuit with low operating voltage
A technology of level shifting circuit and working voltage, which is applied in the direction of logic circuit interface device, logic circuit connection/interface layout, etc., can solve the problems of MN3 and MN4 not working normally, low gate voltage, and circuit not working normally, etc., to achieve Broaden the operating voltage range, wide application range, and improve the effect of grid voltage
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[0032] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0033] Such as Figure 4 , is a circuit diagram of the downlink level shift circuit for reducing the minimum operating voltage of the present invention, including three parts, namely, a high-side input network, a common-gate withstand voltage circuit and a low-side latch circuit.
[0034] The working level of the high-side input network is between VB and VS. In the high-voltage area, the high-level VB on the high-side is equivalent to the high-side "power supply", and the high-side low-level VS is equivalent to the high-side "ground". The high-side input network is used to transfer the input signal IN to the next-level circuit. It adopts a dual-input and dual-output PMOS common-source circuit. The two-way PMOS c...
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