SN74F382 Datasheet, PDF (1/8 Pages) Texas Instruments – ARITHMETIC LOGIC UNIT/FUNCTION GENERATOR

SN74F382
ARITHMETIC LOGIC UNIT/FUNCTION GENERATOR
ą
SDFS079A − D2932, MARCH 1987 − REVISED OCTOBER 1993
• 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
DW OR N PACKAGE
(TOP VIEW)
A1 1
B1 2
A0 3
B0 4
S0 5
S1 6
S2 7
F0 8
F1 ⁹
GND ¹⁰
20 V_CC
19 A2
18 B2
17 A3
16 B3
15 C_n
14 C_n+4
13 OVR
12 _F3
11 _F2
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 ⊕ 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.
FUNCTION TABLE
SELECTION
S2 S1 S0
ARITHMETIC/LOGIC
OPERATION
L
L
L
Clear
L
L
H
B minus A
L
H
L
A minus B
L
H
H
A plus B
H
L
L
A⊕B
H
L
H
A+B
H
H
L
AB
H
H
H
Preset
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  1993, Texas Instruments Incorporated
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