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LM319
Dual Comparator
Features
•
•
•
•
•
•
•
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
Description
The LM319 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
LM319 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 LM319 ideal for application in fast A/D
converts, level shiftier, oscillators, and multivibrators.
14-DIP
1
14-SOP
1
Internal Block Diagram
NC
NC
1
2
14
13
NC
NC
GND1
3
IN (+)
IN (-)
V
EE
OUTPUT2
12
OUTPUT1
+
_
_
+
4
5
6
7
11
V
CC
10
9
8
IN2 (-)
IN2 (+)
GND2
Rev. 1.0.3
©2012 Fairchild Semiconductor Corporation
LM319
Schematic Diagram
R1
R3
R2
Q3
Q7
IN (-)
Q2
R4
IN (+)
Q1
R5
Q5
R8
Q6
C1
R10
Q13
Q10
R18
R20
Q11
Q20
Q19
R25
R24
R21
Q18
Q17
R17
R19
Q12
R16
R14
Q14
R13
Q16
R11
Q15
Q4
R6
R7
Q9
Q8
R12
V
CC
R9
R15
OUTPUT
R22
Q22
Q21
R23
GND
V
EE
Absolute Maximum Ratings
Parameter
Supply Voltage
Output to Negative Supply Voltage
Ground to Negative Supply Voltage
Ground to Positive Supply Voltage
Differential Input Voltage
Input Voltage
Output Short Circuit Duration
Power Dissipation
Thermal Resistance Junction-Ambient Max.
Operating Temperature Range
Storage Temperature Range
Symbol
V
CC
V
O
- V
EE
V
EE
V
CC
V
I(DIFF)
V
I
-
P
D
Rθja
T
OPR
T
STG
Value
36
36
25
18
5
±15
10
500
250
0 ~ +70
-65 ~ +150
Unit
V
V
V
V
V
V
sec
mW
°C/W
°C
°C
2
LM319
Electrical Characteristics
(V
CC
= +15V, V
EE
= -15V, T
A
= 25°C, unless otherwise specified)
Parameter
Input Offset Voltage (Note1)
Input Offset Current (Note1)
Input Bias Current
Voltage Gain
Response Time (Note2)
Saturation Voltage
Symbol
V
IO
I
IO
I
BIAS
G
V
T
RES
V
SAT
V
CC
=
±15V
V
CC
=15V, V
EE
= -15V, V
I
≤
-5mV, I
O
= 25mA
V
CC
= 4.5V,V
EE
= 0V
V
I
≤
-10mV, I
O
≤
3.2mA
V
I
≥
5mV, V
O(P)
= 35V
V
I
≥
10mV, V
O(P)
= 35V
Input Voltage Range
Differential Input Voltage
Positive Supply Current
Positive Supply Current
Negative Supply Current
V
I(R)
V
I(DIFF)
I
CC1
I
CC2
I
EE
V
CC
= 5V, V
EE
= 0V
V
CC
=
±15V
V
CC
=
±15V
Note3
-
V
CC
=
±15V
V
CC
= 5V, V
EE
= 0V
Note3
-
R
S
≤
5kΩ
Conditions
LM319
Min. Typ. Max.
-
Note3
Note3
Note3
-
-
-
-
-
8
-
-
-
-
Note3
-
-
-
1
-
-
-
-
2.0
-
10
-
-
40
80
0.6
0.3
-
-
0.2
±13
-
-
3.6
7.5
3
8.0
10
200
300
1200
-
-
1.5
0.4
-
-
10
-
3
±5
-
12.5
5
V
V
mA
mA
mA
μA
V
Unit
mV
nA
nA
V/mV
ns
150 1000
Output Leakage Current
I
O(LKG)
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. LM319 : 0
≤
T
A
≤
+70°C
3
PCB Design
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