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Numéro de référence | HCF40182B | ||
Description | LOOK-AHEAD CARRY GENERATOR | ||
Fabricant | STMicroelectronics | ||
Logo | |||
1 Page
HCC/HCF40182B
LOOK-AHEAD CARRY GENERATOR
. GENERATES HIGH-SPEED CARRY ACROSS
FOUR ADDERS OF ADDER GROUPS
. HIGH-SPEED OPERATIONAL : tPHL = tPLH =
100ns (typ.) @ VDD = 10V
. CASCADABLE FOR FAST CARRIES OVER N
BITS
. DESIGNED FOR USE WITH HCC/HCF40181B
ALU
. STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERISTICS
. QUIESCENT CURRENT SPECIFIED AT 20V
FOR HCC DEVICE
. 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 JEDECTEN-
TATIVE STANDARD N° 13A, ”STANDARD SPE-
CIFICATIONS FOR DESCRIPTION OF ”B”
SERIES CMOS DEVICES”
EY F
(Plastic Package) (Ceramic Frit Seal Package)
M1
(Micro Package)
C1
(Plastic Chip Carrier)
ORDER CODES :
HCC40182BFHCF4018
2BM1
DESCRIPTION
The HCC40182B (extended temperature range)
and HCF40182B (intermediate temperature range)
are monolithic integrated circuits, available in 16-
lead dual in-line plastic or ceramic package and
plastic micro package. The HCC/HCF40182B is a
high-speed look-ahead carry generator capable of
anticipating a carry across four binary adders or
groups of adders. The HCC/HCF40182B is cascad-
able to perform full look-ahead across n-bit adders.
Carry, propagate-carry, and generate-carry func-
tions are provided as enumerated in the terminal
designation below. The HCC/HCF40182B, when
used in conjunction with the HCC/HCF40181B
arithmetic logic unit (ALU), provides full high-speed
look-ahead carry capability for up to n-bit words.
Each HCC/HCF40182B generates the look-ahead
(anticipated carry) across a group of four ALU’s. In
addition, other HCC/HCF40182B’s may be em-
played to anticipate the carry across sections of four
look-ahead blocks up to n-bits. Carry inputs and out-
puts of the HCC/HCF40181B are active-high logic,
and carry-generate (G) and carry-propagate (P) out-
puts are active low. Therefore the inputs and outputs
of the HCC/HCF40182B are compatible. The
HCC/HCF40182B is similar to industry type
MC14582.
PIN CONNECTIONS
June 1989
1/12
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Pages | Pages 12 | ||
Télécharger | [ HCF40182B ] |
No | Description détaillée | Fabricant |
HCF40182B | LOOK-AHEAD CARRY GENERATOR | STMicroelectronics |
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