CT4003 seven-segment font decoder is mainly used to drive the common cathode digital LED digital tube, such as BS201, BS202, BS205, BS207 and other common cathode LED digital tube. CT4003 has a wide working voltage and can work in the range of 4~10V. The output drive current is large, can be >10MA, and the quiescent current is small. When the ambient temperature is 25 degrees, it is about <50UA. The outer lead arrangement and function of the CT4003 are shown in the figure. The truth table of CT4003 is shown in Table 9-43. Shown.
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