HCC/HCF40182B
LOOK-AHEAD CARRY GENERATOR
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GENERATES HIGH-SPEED CARRY ACROSS
FOUR ADDERS OF ADDER GROUPS
HIGH-SPEED OPERATIONAL : t
PHL
= t
PLH
=
100ns (typ.) @ V
DD
= 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 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)
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.
June 1989
PIN CONNECTIONS
1/12
HCC/HCF40182B
FUNCTIONAL DIAGRAM
TERMINAL DESIGNATIONS TABLE
Pin Name
G0, G1, G2, G3
P0, P1, P2, P3
C
n
C
n + X
, C
n + Y
,
C
n + Z
G
P
Pin
3, 1, 14, 5
4, 2, 15, 6
13
12, 11, 9
10
7
Active-low Carry-generate Inputs
Active-low Carry-propagate Inputs
Active-high Carry Input
Active-high Carry Outputs
Active-low Group Carry-generate Output
Active-low Group Carry-propagate Output
Function
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
HCC/HCF40182B
DYNAMIC ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C, C
L
= 50pF, R
L
= 200kΩ,
typical temperature coefficient for all V
DD
values is 0.3%/°C, all input rise and fall time = 20ns)
Symbol
t
PHL
t
PLH
,
Parameter
Propagation Delay Time
P, G, in to P
G Out and Carry Outs
C
n
to Carry Outs
Test Conditions
V
DD
(V)
5
10
15
5
10
15
t
T HL
t
T LH
,
Transition Time
5
10
15
Min.
Value
Typ.
200
100
75
240
120
90
100
50
40
Max.
400
200
150
480
240
180
200
100
80
ns
ns
ns
Unit
Output Low (sink) Current Characteristics.
Output High (source) Current Characteristics.
Typical Propagation Delay Time (P, G In to P, G
Out and Carry-outs) vs. Load Capacitance.
Typical Transition Time vs. Load Capacitance.
5/12
嵌入式系统
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