HCC/HCF4028B
BCD-TO-DECIMAL DECODER
DESCRIPTION
.
BCD-TO-DECIMAL DECODING OR BINARY-
TO-OCTAL DECODING
.
HIGH DECODED OUTPUTDRIVE CAPABILITY
.
"POSITIVE LOGIC" INPUTS AND OUTPUTS :
DECODED OUTPUTS GO HIGH ON SELEC-
TION
.
MEDIUM-SPEED OPERATION : t
PHL
, t
PLH
=
80ns (typ.) @ V
DD
= 10V
.
STANDARDIZED
SYMMETRICAL
OUTPUT
CHARACTERISTICS
.
QUIESCENT CURRENT SPECIFIED TO 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"
June 1989
The HCC4028B (extended temperature range) and
HCF4028B (intermediate temperature range) are
monolithic integrated circuit, available in 16-lead
dual in-line plastic or ceramic package and plastic
micropackage.
The HCC/HCF4028B types are BCD-to-decimal or
binary-to-octal decoders consisting of buffering on
all 4 inputs, decoding-logic gates, and 10 output buf-
fers. A BCD code applied to the four inputs, A to D,
results in a high level at the selected one of 10 de-
cimal decoded outputs. Similarly, a 3-bit binary code
applied to inputs A through C is decoded in octal
code at output 0 to 7 if D = "0". High drive capability
is provided at all outputs to enhance dc and dynamic
performance in high fan-out applications.
EY
(Plastic Package)
F
(Ceramic Frit Seal Package)
C1
(Plastic Chip Carrier)
ORDER CODES :
HCC4028BF
HCF4028BM1
HCF4028BEY
HCF4028BC1
PIN CONNECTIONS
M1
(Micro Package)
1/14
FUNCTIONAL DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
DD
*
Supply Voltage : HC C Types
H C F Types
0.5 to + 20
0.5 to + 18
V
V
V
i
Input Voltage
0.5 to V
DD
+ 0.5
V
I
I
DC Input Current (any one input)
10
mA
P
t o t
Total Power Dissipation (per package)
Dissipation per Output Transistor
for T
o p
= Full Package-temperature Range
200
100
mW
mW
T
o p
Operating Temperature : HCC Types
H CF Types
55 to + 125
40 to + 85
C
C
T
st g
Storage Temperature
65 to + 150
C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
DD
Supply Voltage : HCC Types
HC F Types
3 to 18
3 to 15
V
V
V
I
Input Voltage
0 to V
DD
V
T
o p
Operating Temperature : HCC Types
H CF Types
55 to + 125
40 to + 85
C
C
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 sec-
tions of this specifi cation is not implied. Exposure to absolute maximum rating conditions for external periods may affect device
reliability.
* All voltage values are referred to V
SS
pin voltage.
HCC/HCF4028B
2/14
LOGIC DIAGRAM AND TRUTH TABLE
D C B A 0 1 2 3 4 5 6 7 8 9
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
WHERE 1 = HIGH LEVEL
0 = LOW LEVEL
HCC/HCF4028B
3/14
STATIC ELECTRICAL CHARACTERISTICS (over recommended operating conditions)
Test Conditions
Value
V
I
V
O
|I
O
|
V
D D
T
L o w
*
25
C
T
Hi g h
*
Symbol
Parameter
(V)
(V)
(
A)
(V)
Min. Max. Min. Typ. Max. Min. Max.
Unit
I
L
Quiescent
Current
HCC
Types
0/ 5
5
5
0.04
5
150
A
0/10
10
10
0.04
10
300
0/15
15
20
0.04
20
600
0/20
20
100
0.08
100
3000
HCF
Types
0/ 5
5
20
0.04
20
150
0/10
10
40
0.04
40
300
0/15
15
80
0.04
80
600
V
O H
Output High
Voltage
0/ 5
< 1
5
4.95
4.95
4.95
V
0/10
< 1
10
9.95
9.95
9.95
0/15
< 1
15
14.95
14.95
14.95
V
O L
Output Low
Voltage
5/0
< 1
5
0.05
0.05
0.05
V
V
10/0
< 1
10
0.05
0.05
0.05
15/0
< 1
15
0.05
0.05
0.05
V
IH
Input High
Voltage
0.5/4.5
< 1
5
3.5
3.5
3.5
1/9
< 1
10
7
7
7
1.5/13.5
< 1
15
11
11
11
V
IL
Input Low
Voltage
4.5/0.5
< 1
5
1.5
1.5
1.5
V
9/1
< 1
10
3
3
3
13.5/1.5
< 1
15
4
4
4
I
O H
Output
Drive
Current
HCC
Types
0/5
2.5
5
2
1.6 3.2
1.15
mA
0/5
4.6
5
0.64
0.51 1
0.36
0/10
9.5
10
1.6
1.3 2.6
0.9
0/15
13.5
15
4.2
3.4 6.8
2.4
HCF
Types
0/5
2.5
5
1.53
1.36 3.2
1.1
0/5
4.6
5
0.52
0.44 1
0.36
0/10
9.5
10
1.3
1.1 2.6
0.9
0/15
13.5
15
3.6
3.0 6.8
2.4
I
O L
Output
Sink
Current
HCC
Types
0/5
0.4
5
0.64
0.51
1
0.36
mA
0/10
0.5
10
1.6
1.3
2.6
0.9
0/15
1.5
15
4.2
3.4
6.8
2.4
HCF
Types
0/5
0.4
5
0.52
0.44
1
0.36
0/10
0.5
10
1.3
1.1
2.6
0.9
0/15
1.5
15
3.6
3.0
6.8
2.4
I
IH
, I
IL
Input
Leakage
Current
HCC
Types
0/18
Any Input
18
0.1
10
5
0.1
1
A
HCF
Types
0/15
15
0.3
10
5
0.3
1
C
I
Input Capacitance
Any Input
5
7.5
pF
* T
Lo w
= 55
C for HCC device : 40
C for HCF device.
* T
High
= + 125
C for HCC device : + 85
C for HCF device.
The Noise Margin for both "1" and "0" level is : 1V min. with V
DD
= 5V, 2V min. with V
DD
= 10V, 2.5 V min. with V
DD
= 15V.
HCC/HCF4028B
4/14
DYNAMIC ELECTRICAL CHARACTERISTICS (T
amb
= 25
C, C
L
= 50pF, R
L
= 200k
,
typical temperature coefficient for all V
DD
values is 0.3%/
C, all input rise and fall times = 20ns)
Val ue
Symbol
Parameter
Test Conditions
V
D D
(V)
Min.
Typ.
Max.
Unit
t
P HL
, t
P L H
Propagation Delay Time
(clock to "out")
5
175
350
ns
10
80
160
15
60
120
t
THL
, t
T L H
Transition Time
5
100
200
ns
10
50
100
15
40
80
Minimum Output High (source) Current Charac-
teristics.
Typical Output Low (sink) Current.
Minimum Output Low (Sink) Current
Charac-
teristics.
Typical
Output High (source) Current
Charac-
teristics.
HCC/HCF4028B
5/14
Typical Dynamic Power Dissipation as a Function of
Input Frequency .
Typical Propagation Delay Time as a Function load
Capacitance.
TYPICAL APPLICATIONS
Figure 1 : Code Conversion Circuit.
The circuit shown in fig. 1 converts any 4-bit code to
a decimal or hexadecimal code Fig 2 shows a num-
ber of codes and the decimal or hexadecimal num-
ber in these codes which must be applied to the
input pins of the HCC/HCF4028B to select a particu-
lar output. For example : in order to get a "high" on
output n8 the input must be either an 8 expressed
in 4-bit binary code, a 15 expressed in 4-bit gray
code, or a 5 expressed in excess-3code.
HCC/HCF4028B
6/14
Figure 2 : Code Conversion Chart.
HCC/HCF4028B
7/14
TYPICAL APPLICATIONS (continued)
Figure 3 : 6-bit binary to 1 of 64 Adress Decoder.
Figure 4 : Neon Readout (nixie tube) Display
Application.
HCC/HCF4028B
8/14
Input Leakage Current.
Noise Immunity.
TEST CIRCUITS
Quiescent Device Current.
Dynamic Power Dissipation.
Typical Transition Time vs. Load Capacitance.
HCC/HCF4028B
9/14
Plastic DIP16 (0.25) MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
a1
0.51
0.020
B
0.77
1.65
0.030
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
17.78
0.700
F
7.1
0.280
I
5.1
0.201
L
3.3
0.130
Z
1.27
0.050
P001C
HCC/HCF4028B
10/14
Ceramic DIP16/1 MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
20
0.787
B
7
0.276
D
3.3
0.130
E
0.38
0.015
e3
17.78
0.700
F
2.29
2.79
0.090
0.110
G
0.4
0.55
0.016
0.022
H
1.17
1.52
0.046
0.060
L
0.22
0.31
0.009
0.012
M
0.51
1.27
0.020
0.050
N
10.3
0.406
P
7.8
8.05
0.307
0.317
Q
5.08
0.200
P053D
HCC/HCF4028B
11/14
SO16 (Narrow) MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
1.75
0.068
a1
0.1
0.2
0.004
0.007
a2
1.65
0.064
b
0.35
0.46
0.013
0.018
b1
0.19
0.25
0.007
0.010
C
0.5
0.019
c1
45
(typ.)
D
9.8
10
0.385
0.393
E
5.8
6.2
0.228
0.244
e
1.27
0.050
e3
8.89
0.350
F
3.8
4.0
0.149
0.157
G
4.6
5.3
0.181
0.208
L
0.5
1.27
0.019
0.050
M
0.62
0.024
S
8
(max.)
P013H
HCC/HCF4028B
12/14
PLCC20 MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
9.78
10.03
0.385
0.395
B
8.89
9.04
0.350
0.356
D
4.2
4.57
0.165
0.180
d1
2.54
0.100
d2
0.56
0.022
E
7.37
8.38
0.290
0.330
e
1.27
0.050
e3
5.08
0.200
F
0.38
0.015
G
0.101
0.004
M
1.27
0.050
M1
1.14
0.045
P027A
HCC/HCF4028B
13/14
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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HCC/HCF4028B
14/14
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