HCC/HCF40181B
4-BIT ARITHMETIC LOGIC UNIT
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FULL LOOK-AHEAD CARRY FOR SPEED
OPERATIONS ON LONG WORDS
GENERATES 16 LOGIC FUNCTIONS OF TWO
BOOLEAN VARIABLES
GENERATES 16 ARITHMETIC FUNCTIONS
OF TWO 4-BIT BINARY WORDS
A = B COMPARATOR OUTPUT AVAILABLE
RIPPLE-CARRY INPUT AND OUTPUT AVAIL-
ABLE
TYPICAL ADDITION TIME 200ns @ V
DD
= 10V
STANDARDIZED SYMMETRICAL OUTPUT
CHARACTERISTICS
QUIESCENT CURRENT AT 20V FOR HCC DE-
VICE
5V, 10V, AND 15V PARAMETRIC RATINGS
INPUT CURRENT OF 100nA AT 18V AND 25°C
FOR HCC DEVICE
100% TESTED FOR QUIESCENT CURRENT
MEETS ALL REQUIREMENTS OF JEDEC TEN-
TATIVE STANDARD N° 13A, ”STANDARD SPE-
CIFICATIONS FOR DESCRIPTION OF ”B”
SERIES CMOS DEVICES”
EY
(Plastic Package)
F
(Ceramic Frit Seal Package)
M1
(Micro Package)
ORDER CODES :
HCC40181BF
HCF40181BEY
HCF40181BM1
PIN CONNECTIONS
DESCRIPTION
The
HCC40181B
(extended temperature range)
and
HCF40181B
(intermediate temperature range)
are monolithic integrated circuits, available in 24-
lead dual in-line plastic or ceramic package and
plastic micro package. The
HCC/HCF40181B
is a
low-power four-bit parallel arithmetic logic unit
(ALU) capable of providing 16 binary arithmetic
operations on two four-bit words and 16 logical func-
tions of two Boolean variables. The mode control
input M selects logical (M = High) or arithmetic (M =
Low) operation. The four select inputs (S0, S1, S2,
and S3) select the desired logical or arithmetic func-
tions, which include AND, OR, NAND, NOR, and ex-
clusive-OR and-NOR in the logical mode, and
addition, subtraction, decrement, left-shift and
straight transfer in the arithmetic mode, according to
the truth table. The
HCC/HCF40181B
operation
may be interpreted with either active-low or active-
high data at the A and B word inputs and the function
outputs F, by using the appropriate truth table. The
HCC/HCF40181B
contains logic for full look-ahead
carry operation for fast carry generation using the
carry-generate and carry-propagate outputs G and
June 1989
1/12
HCC/HCF40181B
P for the four bits of the
HCC/HCF40181B.
Use of
the
HCC/HCF40182B
look-ahead carry generator
in conjunction with multiple
HCC/HCF40181B’s
per-
mits high-speed arithmetic operations on long
words. A ripple carry output C
n + 4
is available for use
in systems where speed is not of primary import-
ance. Also included in the
HCC/HCF40181B
is a
comparator output A = B, which assumes a high
FUNCTIONAL DIAGRAM
Active-low Data.
Active-high Data.
level whenever the two four-bit input words A and B
are equal and the device is in the subtract mode. In
addition, relative magnitude information may be
derived from the carry-in input C
n
and ripple carry-
out output C
n + 4
by placing the unit in the subtract
mode and externally decoding using the information
in table II. The
HCC/HCF40181B
is similar to indus-
try types MC 14581 and 74181.
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
*
V
i
I
I
P
t ot
Parameter
Supply Voltage :
HC C
Types
H C F
Types
Input Voltage
DC Input Current (any one input)
Total Power Dissipation (per package)
Dissipation per Output Transistor
for T
o p
= Full Package-temperature Range
Operating Temperature :
HCC
Types
H CF
Types
Storage Temperature
Value
– 0.5 to + 20
– 0.5 to + 18
– 0.5 to V
DD
+ 0.5
±
10
200
100
– 55 to + 125
– 40 to + 85
– 65 to + 150
Unit
V
V
V
mA
mW
mW
°C
°C
°C
T
op
T
stg
Stresses above those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum rating conditions for external periods may affect device reliability.
* All voltages are with respect to V
SS
(GND).
2/12
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