SN74F382
ARITHMETIC LOGIC UNIT/FUNCTION GENERATOR

SDFS079A - D2932, MARCH 1987 - REVISED OCTOBER 1993

features

• Fully Parallel 4-Bit ALU in 20-Pin Package
• Ideally Suited for HIgh-Density Economical Processors
• Ripple-Carry (C_n+4) and Overflow (OVR) Outputs
• Arithmetic and Logic Operations Selected Specifically to Simplify System Implementation:
• A Minus B
• B Minus A
• A Plus B
• Five Other Functions
• Package Options Include Plastic Small-Outline Packages and Standard Plastic 300-mil DIPs

description

The SN74F382 is an arithmetic logic unit (ALU)/function generator that performs eight binary arithmetic/logic operations on two 4-bit words as shown in the function table. The exclusive-OR, AND, and OR functions of the two Boolean variables are provided without the use of external circuits. In addition, the outputs can be cleared (low) or preset (high) as desired. The device provides a ripple-carry (C_n+4) output to ripple the carry to the C_n input of the next stage. It detects and indicates the two's complement overflow condition via the overflow (OVR) output. OVR is logically equivalent to C_n+3 no map C_n+4. When the SN74F382 is cascaded to handle word lengths longer than four bits in length, only the most significant OVR is used.

The SN74F382 is characterized for operation from 0°C to 70°C.