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Logic level converter between CMOS or TTL and current mode logic - provides output with smaller level shift at junction of resistance and chain of two complementary MOSFET(s) with different gate voltages
Logic level converter between CMOS or TTL and current mode logic - provides output with smaller level shift at junction of resistance and chain of two complementary MOSFET(s) with different gate voltages
A resistance (1) is connected between a source of supply voltage (VCC) and a complementary MOSFET chain (2,3) with gate electrodes returned to different fixed potentials (V1,V2). The potential (V1) applied to the n-channel MOSFET (2) is such that its gate-to-source voltage is always greater than its voltage drop. To set the switching point of the p-channel MOSFET (3) in the region of its input signal level shift, the gate voltage (V2) can be equal to the supply voltage. ADVANTAGE - Relatively large shifts between high and low logic levels can be reduced with use of only one supply voltage source.
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