DATASHEET

CA3161
TM
BCD to Seven Segment Decoder/Driver
August 1997
ven
gnt,
D,
nnt
rt,
ta
quiion,
w
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.
• 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)
Ordering Information
PART NUMBER
TEMP.
RANGE ( oC)
CA3161E
0 to 70
PKG.
NO.
PACKAGE
16 Ld PDIP
E16.3
Functional Block Diagram
CA3161
(PDIP)
TOP VIEW
23
22
21
20
13
6
12
2
1
BCD TO
7 SEGMENT
DECODER
INPUT
BUFFERS
7
CONSTANT
CURRENT
SEGMENT
DRIVERS
11
10
9
15
21
1
16 V +
22
2
15 f
NC
3
14 g
NC
4
13 a
NC
5
12 b
23
6
11 c
20
7
10 d
GND
8
9 e
14
BIAS
CIRCUITRY
8
GND
a
b
c
d
e
f
g
SEGMENT DRIVER OUTPUTS
Pinout
BCD INPUTS
rpoion,
minctor,
cod
Driv
• TTL Compatible Input Logic Levels
SEGMENT DRIVER OUTPUTS
utho
)
eyrds
ter-
Description
BCD INPUTS
ven
gnt
cod
Driv
Features
BCD INPUTS
itle
A31
)
bt
CD
16
V+
SEGMENT
a-g
a
f
b
g
e
c
d
SEGMENT DRIVER
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2001, All Rights Reserved
9-1
SEGMENT
IDENTIFICATION
File Number
1079.3
CA3161
Absolute Maximum Ratings
Thermal Information
DC VSUPPLY (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
Thermal Resistance (Typical, Note 2)
θJA (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
100
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . .0oC to 75οC
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. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
TA = 25×oC
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
4.5
5
5.5
V
-
3.5
8
mA
18
25
32
mA
Output Current High (VO = 5.5V)
-
-
250
µA
Input Voltage High (Logic “1” Level)
2
-
-
V
Input Voltage Low (Logic “0” Level)
-
-
0.8
V
VSUPPLY Operating Range, V +
Supply Current, l+ (All Inputs High)
Output Current Low (VO = 2V)
Input Current High (Logic “1”)
2V
-30
-
-
µA
Input Current Low (Logic “0”)
0V
-40
-
-
µA
tPHL
-
2.6
-
µs
tPLH
-
1.4
-
µs
Propagation Delay Time,
9-2
CA3161
TRUTH TABLE
22
L
21
L
20
L
a
b
c
OUTPUTS
d
e
f
g
0
23
L
L
L
L
L
L
L
H
1
L
L
L
H
H
L
L
H
H
H
H
2
L
L
H
L
L
L
H
L
L
H
L
3
L
L
H
H
L
L
L
L
H
H
L
4
L
H
L
L
H
L
L
H
H
L
L
5
L
H
L
H
L
H
L
L
H
L
L
6
L
H
H
L
L
H
L
L
L
L
L
7
L
H
H
H
L
L
L
H
H
H
H
8
H
L
L
L
L
L
L
L
L
L
L
9
H
L
L
H
L
L
L
L
H
L
L
10
H
L
H
L
H
H
H
H
H
H
L
11
H
L
H
H
L
H
H
L
L
L
L
12
H
H
L
L
H
L
L
H
L
L
L
13
H
H
L
H
H
H
H
L
L
L
H
14
H
H
H
L
L
L
H
H
L
L
L
15
H
H
H
H
H
H
H
H
H
H
H
BINARY
STATE
INPUTS
DISPLAY
BLANK
9-3
Similar pages