TTL to CMOS voltage level translator

摘要

A digital value represented by first and second pluralities of signals is converted into an analog value represented by an analog signal. The converter and the associated circuitry described above are preferably disposed on an integrated circuit chip formed from C-MOS transistors. Circuitry is also provided for converting signal levels from TTL logic devices external to the chip into signals for operating the C-MOS transistors on the chip by adjusting the voltages from the TTL logic devices into voltages optimal for operating the C-MOS transistors. The circuits of this invention are advantageous because they operate satisfactorily at frequencies in excess of eighty-five megahertz (85 mhz).