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National Semiconductor Electronic Components Datasheet

CD4028BC Datasheet

BCD-to-Decimal Decoder

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February 1988
CD4028BM CD4028BC BCD-to-Decimal Decoder
General Description
The CD4028BM CD4028BC is a BCD-to-decimal or binary-
to-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
Features
Y Wide supply voltage range
3 0V to 15V
Y High noise immunity
Y Low power TTL
compatibility
0 45 VDD (typ )
fan out of 2 driving 74L
or 1 driving 74LS
Y Low power
Y Glitch free outputs
Y ‘‘Positive logic’’ on inputs and outputs
Applications
Y Code conversion
Y Address decoding
Y Indicator-tube decoder
Logic and Connection Diagrams
Dual-In-Line Package
Top View
TL F 5959 – 2
Order Number CD4028B
TL F 5959 – 1
Truth Table
DCBA0123456789
0 0 0 01000000000
0 0 0 10100000000
0 0 1 00010000000
0 0 1 10001000000
0 1 0 00000100000
0 1 0 10000010000
BCD States
0 1 1 00000001000
1 e High Level 0 1 1 1 0 0 0 0 0 0 0 1 0 0
-0 e Low Level 1 0 0 0 0 0 0 0 0 0 0 0 1 0
1 0 0 10000000001
1 0 1 00000000010
1 0 1 10000000001
*1 1 0 0 0 0 0 0 0 0 0 0 1 0
1 1 0 10000000001
1 1 1 00000000010
1 1 1 10000000001
Extraordinary States
C1995 National Semiconductor Corporation TL F 5959
RRD-B30M105 Printed in U S A


National Semiconductor Electronic Components Datasheet

CD4028BC Datasheet

BCD-to-Decimal Decoder

No Preview Available !

Absolute Maximum Ratings (Notes 1 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
b0 5 to a18V
b0 5 to VDD a0 5V
b65 C to a150 C
700 mW
500 mW
Lead Temperature (TL)
(Soldering 10 seconds)
260 C
Recommended Operating
Conditions (Note 2)
Supply Voltage (VDD)
3 to 15V
Input Voltage (VIN)
0 to VDDV
Operating Temperature Range (TA)
CD4028BM
CD4028BC
b55 C to a125 C
b40 C to a185 C
DC Electrical Characteristics CD4028BC (Note 2)
Symbol
Parameter
Conditions
b55 C
a25 C
a125 C Units
Min Max Min Typ Max Min Max
IDD
VOL
VOH
VIL
VIH
IOL
IOH
IIN
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
Low Level Output Voltage
l lIO k 1 mA VIL e 0V VIH e VDD
VDD e 5V
VDD e 10V
VDD e 15V
l lHigh Level Output Voltage IO k 1 mA VIL e 0V VIH e VDD
VDD e 5V
VDD e 10V
VDD e 15V
Low Level Input Voltage
lIOl k 1 mA
VDD e 5V
VDD e 10V
VDD e 15V
VO e 0 5V or 4 5V
VO e 1V or 9V
VO e 1 5V or 13 5V
High Level Input Voltage
lIOl k 1 mA
VDD e 5V
VDD e 10V
VDD e 15V
VO e 0 5V or 4 5V
VO e 1V or 9V
VO e 1 5V or 13 5V
4 95
9 95
14 95
35
70
11 0
5
10
20
0 05
0 05
0 05
4 95
9 95
14 95
15
30
40
35
70
11 0
0 01
0 01
0 02
0
0
0
5
10
15
2 25
45
6 75
2 75
55
8 25
5 150
10 300
20 600
0 05 0 05
0 05 0 05
0 05 0 05
4 95
9 95
14 95
15 15
30 30
40 40
35
70
11 0
Low Level Output Current
(Note 3)
VIL e 0V VIH e VDD
VDD e 5V VO e 0 4V
VDD e 10V VO e 0 5V
VDD e 15V VO e 1 5V
0 64 0 51 1 0
16 13 26
42 34 68
0 36
09
24
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
b0 25
b0 62
b1 8
b0 2
b0 5
b1 5
b0 4
b1 0
b3 0
b0 14
b0 35
b1 1
Input Current
VDD e 15V VIN e 0V
VDD e 15V VIN e 15V
b0 1
01
b10b5 b0 1
10b5 0 1
b1 0
10
mA
mA
mA
V
V
V
V
V
V
V
V
V
V
V
V
mA
mA
mA
mA
mA
mA
mA
mA
DC Electrical Characteristics CD4028BC (Note 2)
Symbol
IDD
VOL
Parameter
Quiescent Device Current
Low Level Output Voltage
Conditions
VDD e 5V VIN e VDD or VSS
VDD e 10V VIN e VDD or VSS
VDD e 15V VIN e VDD or VSS
l lIO k 1 mA VIL e 0V VIH e VDD
VDD e 5V
VDD e 10V
VDD e 15V
b40 C
Min Max
20
40
80
0 05
0 05
0 05
a25 C
Min Typ Max
0 01 20
0 01 40
0 02 80
0 0 05
0 0 05
0 0 05
a85 C
Min Max
150
300
600
0 05
0 05
0 05
Units
mA
mA
mA
V
V
V
2


Part Number CD4028BC
Description BCD-to-Decimal Decoder
Maker National Semiconductor
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CD4028BC Datasheet PDF






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