HCF40182B
LOOK-AHEAD CARRY GENERATOR
s
s
s
s
s
s
s
s
s
GENERATES HIGH-SPEED CARRY
ACROSS FOUR ADDERS OR ADDER
GROUPS
HIGH-SPEED OPERATIONAL: t
PHL
= t
PLH
=
100 ns (typ.) AT V
DD
= 10V
CASCADABLE FOR FAST CARRIES OVER
N BITS
DESIGNED FOR USE WITH HCF40181B
ALU
STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERISTICS
QUIESCENT CURRENT SPECIFIED UP TO
20V
INPUT LEAKAGE CURRENT
I
I
= 100nA (MAX) AT V
DD
= 18V T
A
= 25°C
100% TESTED FOR QUIESCENT CURRENT
MEETS ALL REQUIREMENTS OF JEDEC
JESD13B "STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DIP
SOP
ORDER CODES
PACKAGE
DIP
SOP
TUBE
HCF40182BEY
HCF40182BM1
T&R
HCF40182M013TR
DESCRIPTION
HCF40182B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
He is a high speed look-ahead carry generator
capable of anticipating a carry across four binary
adders or adder groups. HCF40182B is
cascadable to perform full look-ahead across n-bit
adders.
Carry
propagate-carry,
and
generate-carry functions are provided as
PIN CONNECTION
enumerated in the terminal designation below.
HCF40182B, when used in conjunction with the
HCF40181B arithmetic logic unit (ALU), provides
full high-speed look-ahead carry capability for up
to n-bit words. Each HCF40182B generates the
look-ahead (anticipated carry) across a group of
four ALUs. In addition, other HCF40182Bs may be
emplayed to anticipate the carry across sections
of four look-ahead blocks up to n-bits.
September 2002
1/10
HCF40182B
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
V
I
I
I
P
D
T
op
T
stg
Supply Voltage
DC Input Voltage
DC Input Current
Power Dissipation per Package
Power Dissipation per Output Transistor
Operating Temperature
Storage Temperature
Parameter
Value
-0.5 to +22
-0.5 to V
DD
+ 0.5
±
10
200
100
-55 to +125
-65 to +150
Unit
V
V
mA
mW
mW
°C
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to V
SS
pin voltage.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
DD
V
I
T
op
Supply Voltage
Input Voltage
Operating Temperature
Parameter
Value
3 to 20
0 to V
DD
-55 to 125
Unit
V
V
°C
4/10
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