9-5
August 1997
CA3161
BCD to Seven Segment Decoder/Driver
Features
TTL Compatible Input Logic Levels
25mA (Typ) Constant Current Segment Outputs
Eliminates Need for Output Current Limiting Resistors
Pin Compatible with Other Industry Standard
Decoders
Low Standby Power Dissipation . . . . . . . . 18mW (Typ)
Description
The CA3161E is a monolithic integrated circuit that performs
the BCD to seven segment decoding function and features
constant current segment drivers. When used with the
CA3162E A/D Converter the CA3161E provides a complete
digital readout system with a minimum number of external
parts.
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
CA3161E
0 to 70
16 Ld PDIP
E16.3
Pinout
CA3161
(PDIP)
TOP VIEW
Functional Block Diagram
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
2
1
2
2
NC
NC
NC
2
3
2
0
GND
V
+
f
g
a
b
c
d
e
SEGMENT DRIVER OUTPUTS
BCD INPUTS
BCD INPUTS
6
2
1
7
2
3
2
2
2
1
2
0
GND
16
13
12
11
10
9
15
14
a
b
c
d
e
f
g
8
V+
BCD TO
INPUT
BIAS
CONSTANT
BUFFERS
7 SEGMENT
DECODER
CURRENT
SEGMENT
DRIVERS
CIRCUITRY
BCD
INPUTS
SEGMENT DRIVER OUTPUTS
SEGMENT
a - g
SEGMENT DRIVER
SEGMENT
IDENTIFICATION
a
b
c
d
f
g
e
File Number
1079.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
Intersil Corporation 1999
9-6
Absolute Maximum Ratings
Thermal Information
DC V
SUPPLY
(Between Terminals 1 and 10) . . . . . . . . . . . . . . +7.0V
Input Voltage (Terminals 1, 2, 6, 7). . . . . . . . . . . . . . . . . . . . . . +5.5V
Output Voltage
Output "Off". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7V
Output "On" (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +10V
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . .0
o
C to 75
C
Thermal Resistance (Typical, Note 2)
JA
(
o
C/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
100
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . .-65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300
o
C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. This is the maximum output voltage for any single output. The output voltage must be consistent with the maximum dissipation and
derating curve for worst case conditions. Example: All segments "ON", 100% duty cycle.
2.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
T
A
= 25
o
C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
SUPPLY
Operating Range, V
+
4.5
5
5.5
V
Supply Current, l
+
(All Inputs High)
-
3.5
8
mA
Output Current Low (V
O
= 2V)
18
25
32
mA
Output Current High (V
O
= 5.5V)
-
-
250
A
Input Voltage High (Logic "1" Level)
2
-
-
V
Input Voltage Low (Logic "0" Level)
-
-
0.8
V
Input Current High (Logic "1")
2V
-30
-
-
A
Input Current Low (Logic "0")
0V
-40
-
-
A
Propagation Delay Time,
t
PHL
-
2.6
-
s
t
PLH
-
1.4
-
s
CA3161
9-8
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate
and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
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NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL 32902
TEL: (407) 724-7000
FAX: (407) 724-7240
EUROPE
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100, Rue de la Fusee
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TEL: (32) 2.724.2111
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ASIA
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Taiwan Limited
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
CA3161
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