NSC CD4028BC Bcd-to-decimal decoder Datasheet

CD4028BM/CD4028BC BCD-to-Decimal Decoder
General Description
Features
The CD4028BM/CD4028BC is a BCD-to-decimal or binaryto-octal decoder consisting of 4 inputs, decoding logic
gates, and 10 output buffers. A BCD code applied to the 4
inputs, A, B, C, and D, results in a high level at the selected
1-of-10 decimal decoded outputs. Similarly, a 3-bit binary
code applied to inputs A, B, and C is decoded in octal at
outputs 0 – 7. A high level signal at the D input inhibits octal
decoding and causes outputs 0–7 to go low.
All inputs are protected against static discharge damage by
diode clamps to VDD and VSS.
Y
Y
Y
Y
Y
Y
Wide supply voltage range
3.0V to 15V
High noise immunity
0.45 VDD (typ.)
Low power TTL
fan out of 2 driving 74L
compatibility
or 1 driving 74LS
Low power
Glitch free outputs
‘‘Positive logic’’ on inputs and outputs
Applications
Y
Y
Y
Code conversion
Address decoding
Indicator-tube decoder
Logic and Connection Diagrams
Dual-In-Line Package
TL/F/5959 – 2
Top View
Order Number CD4028B
TL/F/5959 – 1
Truth Table
D C B A 0 1 2 3 4 5 6 7 8 9
1 e High Level
0 e Low Level
C1995 National Semiconductor Corporation
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
0
0
1
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
0
1
0
1
0
1
TL/F/5959
BCD States
-
*
Extraordinary States
RRD-B30M105/Printed in U. S. A.
CD4028BM/CD4028BC BCD-to-Decimal Decoder
February 1988
Absolute Maximum Ratings (Notes 1 & 2)
Recommended Operating
Conditions (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (VDD)
Input Voltage (VIN)
Storage Temperature Range (TS)
Power Dissipation (PD)
Dual-In-Line
Small Outline
Lead Temperature (TL)
(Soldering, 10 seconds)
Supply Voltage (VDD)
Input Voltage (VIN)
Operating Temperature Range (TA)
CD4028BM
CD4028BC
b 0.5 to a 18V
b 0.5 to VDD a 0.5V
b 65§ C to a 150§ C
3 to 15V
0 to VDDV
b 55§ C to a 125§ C
b 40§ C to a 185§ C
700 mW
500 mW
260§ C
DC Electrical Characteristics CD4028BC (Note 2)
Symbol
Parameter
b 55§ C
Conditions
Min
IDD
Quiescent Device Current VDD e 5V, VIN e VDD or VSS
VDD e 10V, VIN e VDD or VSS
VDD e 15V, VIN e VDD or VSS
VOL
Low Level Output Voltage
VOH
VIL
VIH
IOL
IOH
IIN
lIOl k 1 mA, VIL e 0V, VIH e VDD
VDD e 5V
VDD e 10V
VDD e 15V
High Level Output Voltage lIOl k 1 mA, VIL e 0V, VIH e VDD
VDD e 5V
VDD e 10V
VDD e 15V
Low Level Input Voltage
High Level Input Voltage
a 25§ C
Max
lIOl k 1 mA
VDD e 5V, VO e 0.5V or 4.5V
VDD e 10V, VO e 1V or 9V
VDD e 15V, VO e 1.5V or 13.5V
5
10
20
0.01
0.01
0.02
5
10
20
150
300
600
mA
mA
mA
0.05
0.05
0.05
0
0
0
0.05
0.05
0.05
0.05
0.05
0.05
V
V
V
4.95
9.95
14.95
5
10
15
2.25
4.5
6.75
Min
Units
Max
1.5
3.0
4.0
lIOl k 1 mA
VDD e 5V, VO e 0.5V or 4.5V
VDD e 10V, VO e 1V or 9V
VDD e 15V, VO e 1.5V or 13.5V
a 125§ C
Typ
4.95
9.95
14.95
Min
Max
4.95
9.95
14.95
1.5
3.0
4.0
V
V
V
1.5
3.0
4.0
V
V
V
3.5
7.0
11.0
3.5
7.0
11.0
2.75
5.5
8.25
3.5
7.0
11.0
V
V
V
Low Level Output Current VIL e 0V, VIH e VDD
(Note 3)
VDD e 5V, VO e 0.4V
VDD e 10V, VO e 0.5V
VDD e 15V, VO e 1.5V
0.64
1.6
4.2
0.51
1.3
3.4
1.0
2.6
6.8
0.36
0.9
2.4
mA
mA
mA
High Level Output Current VIL e 0V, VIH e VDD
(Note 3)
VDD e 5V, VO e 4.6V
VDD e 10V, VO e 9.5V
VDD e 15V, VO e 13.5V
b 0.25
b 0.62
b 1.8
b 0.2
b 0.5
b 1.5
b 0.4
b 1.0
b 3.0
b 0.14
b 0.35
b 1.1
mA
mA
mA
Input Current
VDD e 15V,
VDD e 15V,
VIN e 0V
VIN e 15V
b 10 b 5 b 0.1
b 0.1
10b5
0.1
b 1.0
0.1
1.0
mA
mA
DC Electrical Characteristics CD4028BC (Note 2)
Symbol
Parameter
b 40§ C
Conditions
Min
IDD
Quiescent Device Current
VOL
Low Level Output Voltage
VDD e 5V, VIN e VDD or VSS
VDD e 10V, VIN e VDD or VSS
VDD e 15V, VIN e VDD or VSS
lIOl k 1 mA, VIL e 0V, VIH e VDD
VDD e 5V
VDD e 10V
VDD e 15V
2
Max
a 25§ C
Min
a 85§ C
Min
Units
Typ
Max
Max
20
40
80
0.01
0.01
0.02
20
40
80
150
300
600
mA
mA
mA
0.05
0.05
0.05
0
0
0
0.05
0.05
0.05
0.05
0.05
0.05
V
V
V
DC Electrical Characteristics CD4028BC (Note 2) (Continued)
Symbol
Parameter
b 40§ C
Conditions
Min
Max
High Level Output Voltage lIOl k 1 mA, VIL e 0V, VIH e VDD
VDD e 5V
4.95
9.95
VDD e 10V
14.95
VDD e 15V
VOH
VIL
Low Level Input Voltage
VIH
High Level Input Voltage
IOL
Low Level Output Current
(Note 3)
IOH
lIOl k 1 mA
VDD e 5V, VO e 0.5V or 4.5V
VDD e 10V, VO e 1V or 9V
VDD e 15V, VO e 1.5V or 13.5V
Input Current
Typ
4.95
9.95
14.95
5
10
15
1.5
3.0
4.0
2.25
4.5
6.75
lIOl k 1 mA
VDD e 5V, VO e 0.5V or 4.5V
VDD e 10V, VO e 1V or 9V
VDD e 15V, VO e 1.5V or 13.5V
3.5
7.0
11.0
3.5
7.0
11.0
VIH e VDD, VIL e 0V
VDD e 5V, VO e 0.4V
VDD e 10V, VO e 0.5V
VDD e 15V, VO e 1.5V
0.52
1.3
3.6
0.44
1.1
3.0
High Level Output Current VIH e VDD, VIL e 0V
(Note 3)
VDD e 5V, VO e 4.6V
VDD e 10V, VO e 9.5V
VDD e 15V, VO e 13.5V
IIN
a 25§ C
Min
VDD e 15V,
VDD e 15V,
b 0.2
b 0.5
b 1.4
VIN e 0V
VIN e 15V
a 85§ C
Max
Min
Units
Max
4.95
9.95
14.95
1.5
3.0
4.0
V
V
V
1.5
3.0
4.0
3.5
7.0
11.0
V
V
V
0.36
0.9
2.4
mA
mA
mA
b 0.12
b 0.3
b 1.0
mA
mA
mA
0.88
2.2
6.0
b 0.16 b 0.32
b 0.4 b 0.8
b 1.2 b 3.5
V
V
V
b 0.3
b 0.3
b 1.0
0.3
0.3
1.0
mA
mA
AC Electrical Characteristics*
TA e 25§ C, CL e 50 pF, RL e 200k, Input tr e tf e 20 ns, unless otherwise specified
Symbol
Parameter
Conditions
Typ
Max
Units
tPHL or tPLH
Propagation Delay Time
VCC e 5V
VCC e 10V
VCC e 15V
Min
240
100
70
480
200
140
ns
ns
ns
tTHLor tTLH
Transition Time
VCC e 5V
VCC e 10V
VCC e 15V
175
75
60
350
150
110
ns
ns
ns
CIN
Input Capacitance
Any Input
5
7.5
pF
* AC Parameters are guaranteed by DC correlated testing.
Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed, they are not meant to imply that the devices
should be operated at these limits. The table of ‘‘Recommended Operating Conditions’’ and ‘‘Electrical Characteristics’’ provides conditions for actual device
operation.
Note 2: VSS e 0V unless otherwise specified.
Note 3: IOL and IOH are tested one output at a time.
Switching Time Waveforms
TL/F/5959 – 3
3
CD4028BM/CD4028BC BCD-to-Decimal Decoder
Physical Dimensions inches (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number CD4028BMJ or CD4028BCJ
NS Package Number J16A
Molded Dual-In-Line Package (N)
Order Number CD4028BMN or CD4028BCN
NS Package Number N16E
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