CD4008BM Datasheet PDF - National

●General Description

●The CD4008B types consist of four full-adder stages with fast look-ahead carry provision from stage to stage. Circuitry is included to provide a fast ``parallel-carry-out"" bit to permit high-speed operation in arithmetic sections using several CD4008B"s. CD4008B inputs include the four sets of bits to be added, A1 to A4 and B1 to B4, in addition to the ``Carry in"" bit from a previous section. CD4008B outputs include the four sum bits, S1 and S4, in addition to the high-speed ``parallel-carry-out"" which may be utilized at a succeeding CD4008B section.

●All inputs are protected from damage due to static discharge by diode clamps to VDD and GND.

●Features

●Wide supply voltage range 3.0V to 15V

●High noise immunity 0.45 VCC(typ.)

●Low power TTL Fan out of 2 driving 74L

●    compatibility or 1 driving 74LS

●4 sum outputs plus parallel look-ahead carry-output

●Quiescent current specified to 15V

●Maximum input leakage of 1mA at 15V (full package temperature range)