RS331, RS393, RS339
General-Purpose Low-Voltage Open-Drain
Output Comparator
FEATURES
•
Supply Range: +1.8V to +5.5V
•
Low Supply Current
50μA (TYP) per channel at VS = 5V
Input Common-Mode Voltage Range
Includes Ground
•
•
Low Output Saturation Voltage 150mV
Typical
•
Open-Drain Output for Maximum Flexibility
•
SPECIFIED UP TO +85°C
•
Micro SIZE
DESCRIPTION
The RS331 and RS393 is the single and dual
comparator version, the RS339 is quad comparator
version, and both are open-drain output comparators
for maximum flexibility. It can operate from 1.8V to
5.5V, and have low power consuming 50μA (TYP) per
channel.
The RS331, RS393 and RS339 are the most costeffective solutions for applications where low voltage
operation, low power and space saving are the primary
specifications in circuit design for portable consumer
products.
PACKAGES: SOT23-5
The RS331, RS393 and RS339 are available in Green
SOT23-5, SOIC-8, SOIC-14 and TSSOP-14 packages.
It operates over an ambient temperature range of 40°C to +85°C.
Device Information (1)
APPLICATIONS
•
Hysteresis Comparators
•
•
Oscillators
Window Comparators
•
Industrial Equipment
•
Test and Measurement
PART NUMBER
PACKAGE
BODY SIZE (NOM)
RS331
SOT23-5
1.60mm×2.92mm
RS393
RS339
(1)
REV A.3
1
SOIC-8
4.90mm×3.90mm
SOIC-14
8.65mm×3.90mm
TSSOP-14
5.00mm×4.40mm
For all available packages, see the orderable addendum at the
end of the data sheet.
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RS331, RS393, RS339
Pin Configuration and Functions (Top View)
RS331
1
V-
2
-IN
3
5
V+
4
OUT
+
+IN
-
SOT23-5
Pin Description
PIN
SOT23-5
1
2
3
4
5
NAME
+IN
V-IN
OUT
V+
I/O (1)
DESCRIPTION
I
P
I
O
P
Noninverting input
Negative (lowest) power supply
Inverting input
Output
Positive (highest) power supply
(1)I=Input, O=Output, P=Power
RS393
OUT A
1
-IN A
2
+IN A
3
V-
+
A
B+
4
8
V+
7
OUTB
6
-IN B
5
+IN B
SOIC-8(SOP8)
Pin Description
NAME
OUTA
-INA
+INA
V+INB
-INB
OUTB
V+
PIN
SOIC-8(SOP8)
1
2
3
4
5
6
7
8
I/O (1)
O
I
I
P
I
I
O
P
DESCRIPTION
Output, channel A
Inverting input, channel A
Noninverting input, channel A
Negative (lowest) power supply
Noninverting input, channel B
Inverting input, channel B
Output, channel B
Positive (highest) power supply
(1)I=Input, O=Output, P=Power
2
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RS331, RS393, RS339
Pin Configuration and Functions (Top View)
RS339
OUT B
1
14
OUT C
OUT A
2
13
OUT D
V+
3
12
V-
-IN A
4
11
+IN D
+IN A
5
10
-IN D
-IN B
6
9
+IN C
+IN B
7
8
-IN C
SOIC-14(SOP14)/TSSOP-14
Pin Description
NAME
OUTB
OUTA
V+
-INA
+INA
-INB
+INB
-INC
+INC
-IND
+IND
VOUTD
OUTC
PIN
SOIC-14(SOP14)/TSSOP-14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
I/O (1)
O
O
P
I
I
I
I
I
I
I
I
P
O
O
DESCRIPTION
Output, channel B
Output, channel A
Positive (highest) power supply
Inverting input, channel A
Noninverting input, channel A
Inverting input, channel B
Noninverting input, channel B
Inverting input, channel C
Noninverting input, channel C
Inverting input, channel D
Noninverting input, channel D
Negative (lowest) power supply
Output, channel D
Output, channel C
(1)I=Input, O=Output, P=Power
3
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RS331, RS393, RS339
SPECIFICATIONS
Absolute Maximum Ratings
Over operating free-air temperature range (unless otherwise noted) (1)
MIN
Voltage
Current
Temperature
MAX
7
(V-)-0.3
(V+) +0.3
(V-)-0.3
(V+) +0.3
-10
10
-55
55
Continuous
-40
85
150
-65
150
Supply, Vs=(V+) - (V-)
Input pin (IN+, IN-) (2)
Signal output pin (3)
Signal input pin (IN+, IN-) (2)
Signal output pin (3)
Output short-circuit (4)
Operating range, TA
Junction, TJ
Storage, Tstg
UNIT
V
mA
mA
°C
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device
reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied.
(2) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be currentlimited to 10mA or less.
(3) Output terminals are diode-clamped to the power-supply rails. Output signals that can swing more than 0.5V beyond the supply rails should be
current-limited to ±55mA or less.
(4) Short-circuit from output to VCC can cause excessive heating and eventual destruction.
ESD Ratings
VALUE
V(ESD)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS001, all pins (1)
Charged device model (CDM), per JEDEC specification
JESD22-C101, all pins (2)
UNIT
2000
V
1000
(1) JEDEC document JEP155 states that 500V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250V CDM allows safe manufacturing with a standard ESD control process.
Recommended Operating Conditions
Over operating free-air temperature range (unless otherwise noted)
Supply voltage，Vs= (V+) - (V-）
MIN
1.8
±0.9
Single-supply
Dual-supply
NOM
MAX
5.5
±2.75
UNIT
V
Thermal Information:RS331
THERMAL METRIC (1)
RS331
5PINS
SOT23-5
273.8
°C/W
UNIT
RϴJA
Junction-to-ambient thermal resistance
RϴJC(top)
Junction-to-case(top) thermal resistance
126.8
°C/W
RϴJB
Junction-to-board thermal resistance
85.9
°C/W
ѰJT
ѰJB
Junction-to-top characterization parameter
Junction-to-board characterization parameter
10.9
84.9
°C/W
°C/W
RϴJC(bot)
Junction-to-case(bottom) thermal resistance
N/A
°C/W
4
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RS331, RS393, RS339
Thermal Information:RS393
THERMAL METRIC (1)
RS393
8PINS
SOIC-8(SOP-8)
116
°C/W
60
°C/W
UNIT
RϴJA
Junction-to-ambient thermal resistance
RϴJC(top)
Junction-to-case(top) thermal resistance
RϴJB
Junction-to-board thermal resistance
56
°C/W
ѰJT
ѰJB
Junction-to-top characterization parameter
Junction-to-board characterization parameter
12.8
98.3
°C/W
°C/W
RϴJC(bot)
Junction-to-case(bottom) thermal resistance
N/A
°C/W
Thermal Information:RS339
RS339
14PINS
SOIC-14(SOP-14)
TSSOP-14
83.8
205.8
THERMAL METRIC (1)
UNIT
RϴJA
Junction-to-ambient thermal resistance
RϴJC(top)
Junction-to-case(top) thermal resistance
70.7
106.7
°C/W
°C/W
RϴJB
Junction-to-board thermal resistance
59.5
133.9
°C/W
ѰJT
ѰJB
Junction-to-top characterization parameter
Junction-to-board characterization parameter
11.6
37.7
34.4
132.6
°C/W
°C/W
RϴJC(bot)
Junction-to-case(bottom) thermal resistance
N/A
N/A
°C/W
PACKAGE/ORDERING INFORMATION
Orderable
Device
Package Type
Pin
Channel
Op Temp(°C)
Device Marking
Package Qty
RS331XF
SOT23-5
5
1
-40°C ~+85°C
331
Tape and Reel,3000
RS393XK
SOIC-8(SOP8)
8
2
-40°C ~+85°C
RS393
Tape and Reel,2500
RS339XP
SOIC-14(SOP14)
14
4
-40°C ~+85°C
RS339
Tape and Reel,2500
RS339XQ
TSSOP-14
14
4
-40°C ~+85°C
RS339
Tape and Reel,3000
5
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RS331, RS393, RS339
ELECTRICAL CHARACTERISTICS(VS=5.0V)
(At TA = +25C, VCM=Vs/2, unless otherwise noted.)
PARAMETER
CONDITIONS
RS331/RS393/RS339
TYP
MAX
MIN
UINTS
POWER SUPPLY
Vs
Operating Voltage Range
IQ
Quiescent Current/per channel
PSRR
Power-Supply Rejection Ratio
1.8
50
Vs=1.8V to 5.5V, VCM=(V)+0.5V
5.5
V
100
μA
70
dB
INPUT
VOS
ΔVos/ΔT
Input offset voltage
Input Offset Voltage Drift
-3.5
VCM =Vs/2, -40°C ≤ TA ≤ 85°C
±0.6
3.5
mV
μV/°C
0.5
IB
Input Bias Current
1
10
pA
IOS
Input Offset Current
1
10
pA
VCM
Common-Mode Voltage Range
TA = –40°C to 85°C
(V+)+0.1
V
CMRR
Power-Supply Rejection Ratio
VCM =-0.1 to 5.6V
70
VSAT
Saturation Voltage
Io≤4mA
150
VOH
Output Pull-up Voltage Range
VO≤1.5V
27
(V-)-0.1
dB
OUTPUT
IO
Output Current(sinking)
ILEAK
Output Leakage Current
350
5.6
0.01
mV
V
mA
10
nA
SWITCHING
TPHL
TPLH
TF
Propagation Delay H To L
Propagation Delay L To H
Fall Time
RPU=5.1KΩ, Overdrive =10mV
205
RPU=5.1KΩ, Overdrive =100mV
185
RPU=5.1KΩ, Overdrive =10mV
660
RPU=5.1KΩ, Overdrive =100mV
700
RPU=5.1KΩ, Overdrive =100mV
42
6
ns
ns
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RS331, RS393, RS339
ELECTRICAL CHARACTERISTICS(VS=2.7V)
(At TA = +25C, VCM=Vs/2, unless otherwise noted.)
PARAMETER
CONDITIONS
RS331/RS393/RS339
TYP
MAX
MIN
UINTS
POWER SUPPLY
Vs
Operating Voltage Range
IQ
Quiescent Current/per channel
PSRR
Power-Supply Rejection Ratio
1.8
48
Vs=1.8V to 5.5V, VCM=(V)+0.5V
5.5
V
80
μA
70
dB
INPUT
VOS
ΔVos/ΔT
Input offset voltage
Input Offset Voltage Drift
-3.5
VCM =Vs/2, -40°C ≤ TA ≤85°C
±0.6
3.5
mV
μV/°C
0.5
IB
Input Bias Current
1
10
pA
IOS
Input Offset Current
1
10
pA
VCM
Common-Mode Voltage Range
TA = –40°C to 85°C
(V+)+0.1
V
CMRR
Power-Supply Rejection Ratio
VCM =-0.1 to 2.8V
70
dB
VSAT
Saturation Voltage
Io≤2.2mA
144
mV
VOH
Output Pull-up Voltage Range
VO≤1.5V
13
(V-)-0.1
OUTPUT
IO
Output Current(sinking)
ILEAK
Output Leakage Current
5.6
0.01
V
mA
10
nA
SWITCHING
TPHL
TPLH
TF
Propagation Delay H To L
Propagation Delay L To H
Fall Time
RPU=5.1KΩ, Overdrive =10mV
250
RPU=5.1KΩ, Overdrive=100mV
230
RPU=5.1KΩ, Overdrive =10mV
680
RPU=5.1KΩ, Overdrive=100mV
702
RPU=5.1KΩ, Overdrive=100mV
52
7
ns
ns
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RS331, RS393, RS339
ELECTRICAL CHARACTERISTICS(VS=1.8V)
(At TA = +25C, VCM=Vs/2, unless otherwise noted.)
PARAMETER
CONDITIONS
RS331/RS393/RS339
TYP
MAX
MIN
UINTS
POWER SUPPLY
Vs
Operating Voltage Range
IQ
Quiescent Current/per channel
PSRR
Power-Supply Rejection Ratio
1.8
40
Vs=1.8V to 5.5V, VCM=(V)+0.5V
5.5
V
70
μA
70
dB
INPUT
VOS
ΔVos/ΔT
Input offset voltage
Input Offset Voltage Drift
-3.5
VCM =Vs/2, -40°C ≤ TA ≤85°C
±0.6
3.5
mV
μV/°C
0.5
IB
Input Bias Current
1
10
pA
IOS
Input Offset Current
1
10
pA
VCM
Common-Mode Voltage Range
TA = –40°C to 85°C
(V+)+0.1
V
CMRR
Power-Supply Rejection Ratio
VCM =-0.1 to 1.9V
70
dB
VSAT
Saturation Voltage
Io≤1.5mA
144
mV
VOH
Output Pull-up Voltage Range
VO≤0.8V
5
(V-)-0.1
OUTPUT
IO
Output Current(sinking)
ILEAK
Output Leakage Current
5.6
0.01
V
mA
10
nA
SWITCHING
TPHL
TPLH
TF
Propagation Delay H To L
Propagation Delay L To H
Fall Time
RPU=5.1KΩ, Overdrive =10mV
272
RPU=5.1KΩ, Overdrive=100mV
270
RPU=5.1KΩ, Overdrive =10mV
712
RPU=5.1KΩ, Overdrive=100mV
706
RPU=5.1KΩ, Overdrive=100mV
110
8
ns
ns
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RS331, RS393, RS339
TYPICAL CHARACTERISTICS
At TA = +25C, Vs=5V, VCM = VS/2, CL=15pF unless otherwise noted.
Supply Current vs Supply Voltage Output Low
55
50
50
Supply Current(μA)
Supply Current(μA)
Supply Current vs Supply Voltage Output High
55
45
40
35
30
25
45
40
35
30
25
20
20
1
2
3
4
5
1
2
Supply Voltage(V)
Output Voltage vs Output Current
4
5
INPUT BIAS CURRENT vs TEMPERATURE
10K
2000
3
Supply Voltage(V)
Input Bias Current(pA)
Output Voltage(mV)
1800
1600
1400
1200
1000
800
600
400
1K
100
10
1
200
0
0.1
0
10
15
20
Output Current(mA)
25
30
-40 -20
Response Time vs Input Overdrives Negative
Transition(VCC=5V)
730
210
720
205
710
Time(ns)
Time(ns)
215
5
200
195
20
40
60
80 100 120 140
Temperature(℃)
Response Time vs Input Overdrives Positive
Transition(VCC=5V)
700
690
190
680
185
670
180
0
660
0
10 20 30 40 50 60 70 80 90 100
0
Overdrive(mV)
9
10 20 30 40 50 60 70 80 90 100
Overdrive(mV)
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RS331, RS393, RS339
800
310
780
300
760
Time(ns)
Time(ns)
320
Response Time vs Input Overdrives Negative
Transition(VCC=1.8V)
290
280
740
720
270
700
260
680
250
660
240
Response Time vs Input Overdrives Positive
Transition(VCC=1.8V)
640
0
10 20 30 40 50 60 70 80 90 100
0
Overdrive(mV)
10
10 20 30 40 50 60 70 80 90 100
Overdrive(mV)
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RS331, RS393, RS339
Detailed Description
Overview
The RS331, RS393 and RS339 family of comparators can operate up to 5.5V on the supply pin. This standard
device has proven ubiquity and versatility across a wide range of applications. This is due to its low power and
high speed. The open-drain output allows the user to configure the output's logic low voltage (VOL) and can be
utilized to enable the comparator to be used in AND functionality.
V+
IN+
IN-
+
OUT
-
V-
Figure 1. Functional Block Diagram
11
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RS331, RS393, RS339
Application and Implementation
Application Information
RS331, RS393 and RS339 will typically be used to compare a single signal to a reference or two signals
against each other. Many users take advantage of the open drain output (logic high with pull-up) to drive the
comparison logic output to a logic voltage level to an MCU or logic device.
Typical Application
VLOGIC
VLOGIC
VSUP
VIN
VSUP
RPULLUP
+
VIN+
RS331
RPULLUP
+
RS331
Vref
VIN-
Figure 2. Typical Application Schematic
Power Supply Recommendations
For fast response and comparison applications with noisy or AC inputs, it is recommended to use a bypass
capacitor on the supply pin to reject any variation on the supply voltage. This variation causes temporary
fluctuations in the comparator's input common mode range and create an inaccurate comparison.
Layout
Layout Guidelines
For accurate comparator applications without hysteresis it is important maintain a stable power supply with
minimized noise and glitches, which can affect the high-level input common mode voltage range. In order to
achieve this, it is best to add a bypass capacitor between the supply voltage and ground. This should be
implemented on the positive power supply and negative supply (if available). If a negative supply is not being
used, do not put a capacitor between the IC's GND pin and system ground.
Layout Example
Gro und
Bypass
Ca pacito r
Ne gative Supply or Ground
Only n eeded
for dual pow er
supplies
IN+
1
GND
IN –
2
3
5
VCC
4
OUT
0.1 μ F
Positive Su pply
0.1 μ F
Gro und
Figure 3. RS331 Layout Example
12
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RS331, RS393, RS339
PACKAGE OUTLINE DIMENSIONS
SOT23-5
D
1.90
b
2.59
E1
E
0.99
0.95
0.69
e
e1
RECOMMENDED LAND PATTERN (Unit: mm)
0.2
A A2
L
A1
Symbol
c
θ
Dimensions In Millimeters
Dimensions In Inches
Min
Max
Min
Max
A
1.050
1.250
0.041
0.049
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.500
0.012
0.020
c
0.100
0.200
0.004
0.008
D
2.820
3.020
0.111
0.119
E
1.500
1.700
0.059
0.067
E1
2.650
2.950
0.104
0.116
e
0.950(BSC)
0.037(BSC)
e1
1.800
2.000
0.071
0.079
L
0.300
0.600
0.012
0.024
θ
0°
8°
0°
8°
13
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RS331, RS393, RS339
SOIC-8(SOP8)
b
e
5.2
E
E1
2.2
D
1.27
0.6
RECOMMENDED LAND PATTERN (Unit: mm)
A2
c
A
A1
Symbol
L
Dimensions In Millimeters
θ
Dimensions In Inches
Min
Max
Min
Max
A
1.350
1.750
0.053
0.069
A1
0.100
0.250
0.004
0.010
A2
1.350
1.550
0.053
0.061
b
0.330
0.510
0.013
0.020
c
0.170
0.250
0.007
0.010
D
4.800
5.000
0.189
0.197
e
1.270(BSC)
0.050(BSC)
E
5.800
6.200
0.228
0.244
E1
3.800
4.000
0.150
0.157
L
0.400
1.270
0.016
0.050
θ
0°
8°
0°
8°
14
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RS331, RS393, RS339
SOIC-14(SOP14)
e
b
5.2
1.27
E E1
0.6
D
1.27
RECOMMENDED LAND PATTERN (Unit: mm)
A2
A1
A
c
θ
L
Symbol
Dimensions In Millimeters
Dimensions In Inches
Min
Max
Min
Max
A
1.350
1.750
0.053
0.069
A1
0.100
0.250
0.004
0.010
A2
1.350
1.550
0.053
0.061
b
0.310
0.510
0.012
0.020
c
0.100
0.250
0.004
0.010
D
8.450
8.850
0.333
0.348
e
1.270(BSC)
0.050(BSC)
E
5.800
6.200
0.228
0.244
E1
3.800
4.000
0.150
0.157
L
0.400
1.270
0.016
0.050
θ
0°
8°
0°
8°
15
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RS331, RS393, RS339
TSSOP-14
e
b
5.6
E1 E
1.78
D
0.65
0.42
RECOMMENDED LAND PATTERN (Unit: mm)
A2
A
A1
Symbol
H
C
θ
L
Dimensions In Millimeters
Min
Max
A
Dimensions In Inches
Min
Max
1.200
0.047
A1
0.050
0.150
0.002
0.006
A2
0.800
1.050
0.031
0.041
b
0.190
0.300
0.007
0.012
c
0.090
0.200
0.004
0.008
D
4.860
5.100
0.191
0.201
E
4.300
4.500
0.169
0.177
E1
6.250
6.550
0.246
0.258
e
L
0.650(BSC)
0.500
H
θ
0.026(BSC)
0.700
0.020
0.25(TYP)
1°
0.028
0.01(TYP)
7°
16
1°
7°
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