CD4028BCN [FAIRCHILD]
BCD-to-Decimal Decoder; BCD到十进制解码器
| 型号： | CD4028BCN |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | BCD-to-Decimal Decoder |
| 文件： | 总6页 (文件大小：56K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
October 1987
Revised January 1999
CD4028BC
BCD-to-Decimal Decoder
General Description
Features
The 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 dec-
imal 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.
■ Wide supply voltage range: 3.0V to 15V
■ High noise immunity: 0.45 VDD (typ.)
■ Low power TTL compatibility: fan out of 2 driving 74L
or 1 driving 74LS
■ Low power
■ Glitch free outputs
■ “Positive logic” on inputs and outputs
All inputs are protected against static discharge damage by
diode clamps to VDD and VSS
.
Applications
•
•
•
Code conversion
Address decoding
Indicator-tube decoder
Ordering Code:
Order Number Package Number
Package Description
CD4028BCM
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
CD4028BCN
N16E
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignments for DIP and SOIC
Top View
© 1999 Fairchild Semiconductor Corporation
DS005959.prf
www.fairchildsemi.com
Truth Table
D
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
C
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
A
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
3
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
4
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
5
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
6
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
7
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
8
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
9
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
BCD States
1 = HIGH Level
0 = LOW Level
Extraordinary States
Logic Diagram
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2
Absolute Maximum Ratings(Note 1)
(Note 2)
Recommended Operating
Conditions (Note 2)
Supply Voltage (VDD
)
−0.5 to +18V
−0.5 to VDD +0.5V
−65°C to +150°C
Supply Voltage (VDD
Input Voltage (VIN
Operating Temperature Range (TA)
)
3 to 15V
0 to VDD
−40°C to +85°C
Input Voltage (VIN
)
)
V
Storage Temperature Range (TS)
Power Dissipation (PD)
Dual-In-Line
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 “Recom-
mended Operating Conditions” and “Electrical Characteristics” provides
conditions for actual device operation.
700 mW
500 mW
Small Outline
Lead Temperature (TL)
(Soldering, 10 seconds)
Note 2: V = 0V unless otherwise specified.
SS
260°C
DC Electrical Characteristics (Note 2)
−40°C
+25°C
Typ
+85°C
Symbol
Parameter
Conditions
5V, V = V or V
SS
Units
Min
Max
Min
Max
20
Min
Max
I
Quiescent Device Current
V
V
V
=
20
40
80
0.01
0.01
0.02
150
300
600
µA
µA
µA
DD
DD
DD
DD
IN
DD
= 10V, V = V or V
40
IN
DD
SS
SS
= 15V, V = V or V
80
IN
DD
V
V
V
V
LOW Level Output Voltage
HIGH Level Output Voltage
LOW Level Input Voltage
HIGH Level Input Voltage
|I | < 1 µA, V = 0V, V = V
O IL IH
OL
OH
IL
DD
V
=
5V
0.05
0.05
0.05
0
0
0
0.05
0.05
0.05
0.05
0.05
0.05
V
V
V
DD
DD
DD
V
V
= 10V
= 15V
|I | < 1 µA, V = 0V, V = V
O
IL
IH
DD
V
=
5V
4.95
9.95
4.95
9.95
5
4.95
9.95
V
V
V
DD
DD
DD
V
V
= 10V
= 15V
10
15
14.95
14.95
14.95
|I | < 1 µA
O
V
V
V
=
5V,
V
= 0.5V or 4.5V
= 1V or 9V
1.5
3.0
4.0
2.25
4.5
1.5
3.0
4.0
1.5
3.0
4.0
V
V
V
DD
DD
DD
O
= 10V,
= 15V,
V
V
O
= 1.5V or 13.5V
6.75
O
|I | < 1 µA
IH
O
V
V
V
V
V
V
V
V
V
V
V
V
V
=
5V,
V
= 0.5V or 4.5V
= 1V or 9V
3.5
7.0
3.5
7.0
3.5
7.0
V
V
V
DD
DD
DD
O
= 10V,
= 15V,
V
V
O
= 1.5V or 13.5V
11.0
11.0
11.0
O
I
I
I
LOW Level Output Current
(Note 3)
= V , V = 0V
DD IL
OL
IH
=
5V,
V
= 0.4V
= 0.5V
= 1.5V
0.52
1.3
0.44
1.1
0.88
2.2
0.36
0.9
mA
mA
mA
DD
DD
DD
O
= 10V,
= 15V,
V
O
O
V
3.6
3.0
6.0
2.4
HIGH Level Output Current
(Note 3)
= V , V = 0V
DD IL
OH
IH
=
5V,
V
=
=
4.6V
9.5V
−0.2
−0.5
−1.4
−0.16 −0.32
−0.12
−0.3
mA
mA
mA
µA
DD
DD
DD
DD
DD
O
= 10V,
= 15V,
= 15V,
= 15V,
V
V
V
V
−0.4
−1.2
−0.8
−3.5
O
= 13.5V
−1.0
O
Input Current
=
0V
−0.3
−0.3
−1.0
IN
IN
IN
= 15V
0.3
0.3
1.0
µA
Note 3: I and I are tested one output at a time.
OL
OH
3
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AC Electrical Characteristics (Note 4)
T
A = 25°C, CL = 50 pF, RL = 200k, Input tr = tf = 20 ns, unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
t
or t
Propagation Delay Time
V
V
V
V
V
V
= 5V
240
100
70
480
200
140
350
150
110
7.5
ns
ns
ns
ns
ns
ns
pF
PHL
PLH
CC
CC
CC
CC
CC
CC
= 10V
= 15V
= 5V
or t
Transition Time
175
75
THL
TLH
= 10V
= 15V
60
C
Input Capacitance
Any Input
5
IN
Note 4: AC Parameters are guaranteed by DC correlated testing.
Switching Time Waveforms
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4
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
Package Number M16A
5
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Package Number N16E
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.
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