Product Summary

The MC146823P is a CMOS parallel interface. It provides a universal means of interfacing external signals with the MC146805E2 CMOS microprocessor and other multiplexed bus microprocessors. The MCI146823P CPI includes three bidirectional 8-bit ports or 24 I/O pins.


MC146823P absolute maximum ratings: (1)supply voltage, VDD: -0.3 to 8.0V; (2)all input voltages, VIN: VSS-0.5 to VDD+0.5V; (3)current drain per pin excluding VDD and VSS, I: 10mA; (4)operating temperature range, TA: 0 to 70℃; (5)storage temperature range, Tstg: -55 to 150℃.


MC146823P features: (1)24 individually programmed I/O pins; (2)MOTEL circuit for bus compatibility with many microprocessros; (3)15 registers addressed as memory locations; (4)reset input to clear interrupts and initialize internal registers; (5)3.0V to 5.5V operating VDD.


MC146823P pin connection