Intersil Corporation CA3161 Datasheet
CA3161
BCD
INPUTS
August 1997
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)
Ordering Information
TEMP.
PART NUMBER
CA3161E 0 to 70 16 Ld PDIP E16.3
Pinout
TOP VIEW
1
1
2
2
2
2
BCD INPUTS
BCD INPUTS
NC
NC
NC
GND
3
4
5
3
6
2
0
7
2
8
RANGE (oC) PACKAGE
CA3161
(PDIP)
+
16
V
15
f
14
g
a
13
b
12
c
11
d
10
e
9
Functional Block Diagram
6
3
2
2
2
2
1
1
2
0
2
SEGMENT DRIVER OUTPUTS
BUFFERS
7
PKG.
NO.
INPUT
8
BCD to Seven Segment Decoder/Driver
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.
13
12
11
10
9
15
14
GND
BCD TO
7 SEGMENT
DECODER
BIAS
CIRCUITRY
16
V+
SEGMENT
a - g
CONSTANT
CURRENT
SEGMENT
DRIVERS
a
f
b
g
e
c
d
a
b
c
d
e
f
g
SEGMENT DRIVER OUTPUTS
SEGMENT DRIVER SEGMENT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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| Copyright © Intersil Corporation 1999
9-5
IDENTIFICATION
File Number 1079.3
CA3161
Absolute Maximum Ratings Thermal Information
DC V
Input Voltage (Terminals 1, 2, 6, 7). . . . . . . . . . . . . . . . . . . . . .+5.5V
Output Voltage
Output “Off”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7V
Output “On” (Note 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +10V
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 an y 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.
(Between Terminals 1 and 10) . . . . . . . . . . . . . .+7.0V
SUPPLY
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
Electrical Specifications T
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
V
Supply Current, l+ (All Inputs High) - 3.5 8 mA
Output Current Low (VO = 2V) 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
Input Current High (Logic “1”) 2V -30 - - µA
Input Current Low (Logic “0”) 0V -40 - - µA
Propagation Delay Time, t
Operating Range, V
SUPPLY
= 25oC
A
+
PHL
t
PLH
4.5 5 5.5 V
- 2.6 - µs
- 1.4 - µs
9-6
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