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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 shifters, oscillators, and multivibrators.
14-DIP
1
14-SOP
1
Internal Block Diagram
Rev. 1.0.2
©2001 Fairchild Semiconductor Corporation
LM319
Schematic Diagram
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
Operating Temperature Range
Storage Temperature Range
Symbol
V
CC
V
O
- V
EE
V
EE
V
CC
V
I(DIFF)
V
I
-
P
D
T
OPR
T
STG
Value
36
36
25
18
5
±15
10
500
0 ~ + 70
-65 ~ + 150
Unit
V
V
V
V
V
V
sec
mW
°C
°C
2
LM319
Electrical Characteristics
(V
CC
= + 15V, V
EE
= - 15V, T
A
= 25°C, unless otherwise specified)
Parameter
Input Offset Voltage (Note 1)
Input Offset Current (Note 1)
Input Bias Current
Voltage Gain
Response Time (Note 2)
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
Note 3
-
V
CC
=
±15V
V
CC
= 5V, V
EE
= 0V
Note3
-
R
S
≤
5KΩ
Conditions
LM319
Min. Typ. Max.
-
Note 3
Note 3
Note 3
-
-
-
-
-
8
-
-
-
-
Note 3
-
-
-
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
LM319
Typical Performance Characteristics
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
4
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