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KA319
Dual Comparator
Features
Description
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The KA319 is a dual high speed voltage comparator
designed to operate from a single +5V supply up to ±15V
dual supplies. Open collector of the output stage makes the
KA319 compatible with RTL, DTL and TTL as well as
capable of driving lamps and relays at currents up to 25mA.
Typical response time of 80ns with ±15V power supplies
makes the KA319 ideal for application in fast A/D converts,
level shiftiers, oscillators, and multivibrators.
Operates From a Single 5V Supply
Typically 80ns Response Time at ±15V
Open Collector Outputs : up to +35V
High Output Drive Current : 25mA
Inputs and Outputs can be Isolated From System Ground
Minimum Fan-out of 2 (Each Side)
Two Independent Comparators
14-DIP
1
14-SOP
1
Internal Block Diagram
NC
1
14
NC
NC
2
13
NC
GND1 3
IN (+)
4
IN (-)
5
VEE
6
OUTPUT2
7
12 OUTPUT1
11 VCC
+
_
_
10
IN2 (-)
+
9
IN2 (+)
8
GND2
Rev. 1.0.3
©2012 Fairchild Semiconductor Corporation
KA319
Schematic Diagram
R1
VCC
R3
R2
R7
R6
Q4
Q9
Q8
Q3
Q7
IN (-)
Q2
R4
IN (+)
R12
Q6
C1
R5
Q1
R8
Q5
Q15
R15
Q10
OUTPUT
Q14
R18
R13
R20
R23
Q21
Q13
R9
R22
Q22
R11
R10
Q16
Q11
R19
Q20
Q12
R16
R14
Q19
R25
R24
Q18
Q17
R21
R17
GND
VEE
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
VCC
36
V
Output to Negative Supply Voltage
VO - VEE
36
V
Ground to Negative Supply Voltage
VEE
25
V
Ground to Positive Supply Voltage
VCC
18
V
VI(DIFF)
5
V
VI
±15
V
Supply Voltage
Differential Input Voltage
Input Voltage
Output Short Circuit Duration
-
10
sec
PD
500
mW
Thermal Resistance Junction-Ambient Max.
Rθja
250
°C/W
Operating Temperature Range KA319
TOPR
0 ~ +70
°C
Storage Temperature Range
TSTG
-65 ~ +150
°C
Power Dissipation
2
KA319
Electrical Characteristics
(VCC = +15V, VEE = -15V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Input Offset Voltage (Note1)
VIO
Input Offset Current (Note1)
IIO
Input Bias Current
Voltage Gain
Response Time (Note2)
Saturation Voltage
Output Leakage Current
Conditions
RS ≤ 5kΩ
Note3
Note3
Note3
IO(LKG)
VI(R)
2.0
8.0
-
-
10
-
10
200
-
-
300
150 1000
mV
nA
nA
-
1200
-
8
40
-
V/mV
VCC = ±15V
-
80
-
ns
VCC=15V, VEE = -15V , VI ≤ -5mV, IO = 25mA
-
0.6
1.5
VCC = 4.5V,VEE = 0V
VI ≤ -10mV, IO ≤ 3.2mA
-
0.3
0.4
-
-
-
VI ≥ 5mV, VO(P) = 35V
Note3
Note3
Note3
-
V
μA
-
-
-
-
0.2
10
VCC = ±15V
-
±13
-
VCC = 5V, VEE = 0V
1
-
3
V
-
-
±5
V
VI ≥ 10mV, VO(P) = 35V
Input Voltage Range
-
Unit
-
GV
VSAT
Min. Typ. Max.
-
IBIAS
TRES
KA319
Note3
Differential Input Voltage
VI(DIFF)
Positive Supply Current
ICC1
VCC = 5V, VEE = 0V
-
3.6
-
mA
Positive Supply Current
ICC2
VCC = ±15V
-
7.5
12.5
mA
Negative Supply Current
IEE
VCC = ±15V
-
3
5
mA
Notes :
1. The offset voltage and offset currents given are the maximum values required to drive the output within a volt of either
supply with a 1mA load. Thus, these parameters define an error band and take into account the worst case effects of
voltage gain and input impedance.
2. The response time specified is for a 100mV input step with 5mV overdrive.
3. KA319 : 0 ≤ TA ≤ +70°C
3
KA319
Typical Performance Characteristics
4
Figure 1. Input Current
Figure 2. Output Saturation Voltage
Figure 3. Transfer Function
Figure 4. Response Time for Various Input Overdriver
Figure 5. Response Time Various Input Overdriver
Figure 6. Input Characteristics
KA319
Typical Performance Characteristics (Continued)
Figure 7. Response Time for Various Input Over driver
Figure 8. Response Time for Various Input Over driver
Figure 9. Supply Current
Figure 10. Supply Current
Figure 11. Common Mode Limits
Figure 12. Output Limiting Characteristics
5
KA319
Mechanical Dimensions
Package
Dimensions in millimeters
2.08
)
0.082
14-DIP
7.62
0.300
3.25 ±0.20
0.128 ±0.008
5.08
MAX
0.200
+0.10
0.25 –0.05
0~15°
6
+0.004
0.010 –0.002
1.50 ±0.10
0.059 ±0.004
#8
2.54
0.100
#7
19.40 ±0.20
0.764 ±0.008
#14
19.80
MAX
0.780
#1
0.46 ±0.10
0.018 ±0.004
(
6.40 ±0.20
0.252 ±0.008
0.20
MIN
0.008
3.30 ±0.30
0.130 ±0.012
KA319
Mechanical Dimensions (Continued)
Package
Dimensions in millimeters
14-SOP
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KA319
Ordering Information
Product Number
Package
KA319
14-DIP
KA319D
14-SOP
Operating Temperature
0 ~ +70°C
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
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
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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© 2012 Fairchild Semiconductor Corporation