HCC/HCF4585B
4-BIT MAGNITUDE COMPARATOR
.
.
.
.
.
.
.
EXPANSION TO 8, 12, 16 ... 4 N BITS BY CAS-
CADING UNITS
MEDIUM-SPEED OPERATION : COMPARES
TWO 4-BIT WORDS IN 180ns (typ.) AT 10V
STANDARDIZED SYMMETRICAL OUTPUT
CHARACTERISTICS
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 :
HCC4585BF
HCF4585BM1
HCF4585BEY
HCF4585BC1
PIN CONNECTIONS
DESCRIPTION
The
HCC4585B
(extended temperature range) and
HCF4585B
(intermediate temperature range) are
monolithic integrated circuits, available in 16-lead
dual in-line plastic or ceramic package, and plastic
micro package. The
HCC/HCF4585B
is a 4-bit mag-
nitude comparator designed for use in computer and
logic applications that require the comparison of two
4-bit words. This logic circuit determines whether
one 4-bit word (Binary or BCD) is ”less than”, ”equal
to”, or ”greater than” a second 4-bit word. The
HCC/HCF4585B
has eight comparing inputs (A3,
B3, through A0, B0), three outputs (A < B, A = B, A >
B) and three cascading inputs (A < B, A = B, A > B)
that permit systems designers to expand the com-
parator function to 8, 12, 16 ... 4 N bits. When a
single
HCC/HCF4585B
is used, the cascading in-
puts are connected as follows : (A < B) = low,
(A = B) = high, (A > B) = high. Cascading these units
for comparison of more than 4 bits is accomplished
as shown in typical application.
June 1989
1/12
HCC/HCF4585B
FUNCTIONAL DIAGRAM
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).
RECOMMENDED OPERATING CONDITIONS
Symbol
V
DD
V
I
T
op
Parameter
Supply Voltage :
H CC
Types
H C F
Types
Input Voltage
Operating Temperature :
HCC
Types
H CF
Types
Value
3 to 18
3 to 15
0 to V
DD
– 55 to + 125
– 40 to + 85
Unit
V
V
V
°C
°C
2/12
HCC/HCF4585B
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
P LH
Parameter
Propagation Delay Time
Comparing Inputs to Outputs
Test Conditions
V
D D
(V)
Min.
5
10
15
Cascading Input to Outputs
5
10
15
t
T HL
,
t
TLH
Transition Time
5
10
15
Value
Typ.
300
125
80
200
80
60
100
50
40
Max.
600
250
160
400
160
120
200
100
80
ns
ns
ns
Unit
Output Low (sink) Current Characteristics.
Output High (source) Current Characteristics.
Typical Transition Time vs. Load Capacitance.
Typical Propagation Delay Time (comparing in-
puts to outputs) vs. Load Capacitance.
5/12
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