Wednesday, 29 June 2016

How to connect a CD40109BE Voltage Level Shifter


I have a circuit requirement using a Texas Instrument CD40109BE Voltage Level Shifter. This chip incorporates 4 low to high level shifting circuits. I plan to use two of these circuits, A and B with C and D disabled.


The input voltage for both channels is 5 V TTL level and the output is 12 VDC, from two independent power supplies. In addition, I will be switching the input level at a frequency between 500 Hz to 2 kHz with a square wave from a Pulse Width Modulation source of variable duty cycle. The 12 VDC output to follow the 5 V TTL input waveform.


I'm not an expert in electronic component design and was wondering if someone can provide a detailed circuit connection diagram for such a circuit.



Answer



Here you go.


schematic



simulate this circuit – Schematic created using CircuitLab


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