DM74S283

Supply Voltage . . . . . . . . . . . . . . . .    . . . . . . . .   . . . . . . . .   . . . . . . . .   . . . . . . . . .   7V
Input Voltage  . . . . . . . .   . . . . . . . .   . . . . . . . .   . . . . . . . .   . . . . . . . .   . . . . . . . .  5.5V
Operating Free Air Temperature Range  . . . . . . . .   . . . . . . . .   . . . . . . .  0°C to +70°C
Storage Temperature Range  . . . . . . . .   . . . . . . . .   . . . . . . . .   . . .  −65°C to +150°C

Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation.

These DM74S283  full adders perform the addition of two 4-bit binary numbers. The sum () outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bit. These DM74S283 adders feature full internal look ahead across all four bits. This provides the system designer with partial lookahead performance at the economy and reduced package count of a ripple-carry implementation.

The adder logic, including the carry, is implemented in its true form meaning that the end-around carry can be accomplished without the need for logic or level inversion.