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Level Shifters
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Low to High
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circuit diagram from [#]_


High to Low
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.. [#] S. R. Hosseini, M. Saberi and R. Lotfi, "A Low-Power Subthreshold to Above-Threshold Voltage Level Shifter" in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 61, no. 10, pp. 753-757, Oct. 2014.