MCP23S17 address decoder and 3V3 to 5V0 logic level up shifter and display driver

Now I am mixing and matching some old 5V0 logic circuit boards I used with Arduino and Netduino.

1. The 4 of 8 bits input ULN2803 x2 based 3V3 to 5V0 logic level up shifter is now connected to MCP23S17 GA0~3.  So the 3V3 3 bit address is displayed by the 5V0 MC14495.

2. The MC14495 has hexidecimal 4 bit input.  However MCP23S17 GA0~3 is address data, GA3 is ~LE, so I need get rid of this GA3 bit, in order not to mislead.


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