19-1226; Rev 3; 2/07
Single/Dual/Quad, Micropower,
Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
General Description
The MAX965–MAX970 single/dual/quad micropower
comparators feature rail-to-rail inputs and outputs, and
fully specified single-supply operation down to +1.6V.
These devices draw less than 5µA per comparator and
have open-drain outputs that can be pulled beyond V
CC
to 6V (max) above ground. In addition, their rail-to-rail
input common-mode voltage range makes these com-
parators suitable for ultra-low-voltage operation.
A +1.6V to +5.5V single-supply operating voltage range
makes the MAX965 family of comparators ideal for 2-cell
battery-powered applications. The MAX965/MAX967/
MAX968/MAX969 offer programmable hysteresis and
an internal 1.235V ±1.5% reference. All devices are
available in either space-saving 8-pin µMAX
®
or 16-pin
QSOP packages.
____________________________Features
♦
Ultra-Low Single-Supply Operation down to +1.6V
♦
Rail-to-Rail Common-Mode Input Voltage Range
♦
3µA Quiescent Supply Current per Comparator
♦
Open-Drain Outputs Swing Beyond V
CC
♦
1.235V ±1.5% Precision Internal Reference
(MAX965/967/968/969)
♦
10µs Propagation Delay (50mV overdrive)
♦
Available in Space-Saving Packages:
8-Pin µMAX (MAX965–MAX968)
16-Pin QSOP (MAX969/MAX970)
MAX965–MAX970
Ordering Information
PART
MAX965ESA
MAX965EUA-T
MAX966ESA
MAX966EUA-T
MAX967ESA
MAX967EUA-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 SO
8 µMAX-8
8 SO
8 µMAX-8
8 SO
8 µMAX-8
PKG
CODE
S8-2
U8-1
S8-2
U8-1
S8-2
U8-1
________________________Applications
2-Cell Battery-Powered/Portable Systems
Window Comparators
Threshold Detectors/Discriminators
Mobile Communications
Voltage-Level Translation
Ground/Supply-Sensing Applications
Ordering Information continued on last page.
Pin Configurations appear at end of data sheet.
_____________________Selector Guide
COMPARATORS
PER
PACKAGE
PROGRAMMABLE
HYSTERESIS
µMAX is a registered trademark of Maxim Integrated Products,
Inc.
INTERNAL
REFERENCE
__________Typical Operating Circuit
V
IN
PART
V
CC
7
MAX965
MAX966
MAX967
MAX968
MAX969
MAX970
Yes
No
Yes
Yes
Yes
No
1
2
2
2
4
4
Yes
No
3 IN+
V
CC
OUT
8
R
PULLUP
V
OUT
4 IN-
Yes
Yes
Yes
5 HYST
6 REF
1.235V
1
MAX965
GND
No
________________________________________________________________
Maxim Integrated Products
1
For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Single/Dual/Quad, Micropower,
Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
MAX965–MAX970
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
) ............................................................+6V
Voltages
IN_-, IN_+, REF, HYST ..........................-0.3V to (V
CC
+ 0.3V)
OUT_ ...............................................................-0.3V to +6.0V
Current into Input Pins ......................................................±20mA
Duration of OUT_ Short Circuit to GND or V
CC
..........Continuous
Continuous Power Dissipation
8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW
8-Pin µMAX (derate 4.10mW/°C above +70°C) ..........330mW
14-Pin SO (derate 8.33mW/°C above +70°C).............667mW
16-Pin SO (derate 8.70mW/°C above +70°C).............696mW
16-Pin QSOP (derate 5.70mW/°C above +70°C)........457mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= +1.6V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 3V and T
A
= +25°C.)
PARAMETER
POWER SUPPLIES
All packages, T
A
= 0°C to +85°C
Supply Voltage Range
Comparator Minimum
Operating Voltage
MAX965
MAX966
Supply Current
I
CC
MAX967/MAX968
MAX969
MAX970
Power-Up Time
(V
CC
to output valid)
COMPARATOR
Power-Supply Rejection Ratio
Common-Mode Voltage Range
PSRR
V
CMR
1.7V
≤
V
CC
≤
5.5V
T
A
= +25°C
T
A
= -40°C to +85°C
SO package
Common-mode
QSOP package
range = -0.25V
to 1.3V,
0°C to +85°C
µMAX
V
CC
> 1.8V
package -40°C to +85°C
SO package
Full common-
mode range
Input Hysteresis
Input Bias Current
Input Offset Current
Input Capacitance
2
V
HYST
I
B
I
OS
C
IN
HYST = REF
Common-mode range = -0.25V to (V
CC
- 0.25V)
Full common-mode range, T
A
= +25°C
QSOP package
µMAX
package
0°C to +85°C
-40°C to +85°C
±1
0.001
0.001
0.2
7.0
±5
±50
-0.25
-0.25
0.1
1.0
V
CC
V
CC
- 0.25
3.0
4.0
4.0
6.0
7.0
10.0
10.0
15.0
mV
nA
pA
pF
mV
mV/V
V
V
V
CC
stepped 0V to 5V
V
CC
SO/QSOP packages, T
A
= -40°C to +85°C
µMAX package, T
A
= -40°C to +85°C
1.6
1.7
1.8
1.0
7.0
6.0
10
14
11
20
12
10
16
22
18
µs
µA
5.5
5.5
5.5
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Offset Voltage
V
OS
_______________________________________________________________________________________
Single/Dual/Quad, Micropower,
Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +1.6V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= 3V and T
A
= +25°C.)
PARAMETER
Common-Mode Rejection Ratio
HYST Input Voltage Range
HYST Input Leakage
Hysteresis Gain
Input Voltage Noise
OUT Output Voltage Low
OUT Output Leakage Current
Propagation Delay
REFERENCE
SO package
QSOP package
µMAX package, T
A
= 0°C to +85°C
µMAX package, T
A
= -40°C to +85°C
HYST = REF
f = 100Hz to 100kHz, C
REF
= 0.1µF
1.125
1.205
1.205
1.185
15
200
1.235
1.235
1.235
1.235
50
400
10
1.255
1.265
1.265
1.285
e
n
V
OL
I
LEAK
t
PD-
f = 100Hz to 100kHz, C
REF
= 1000pF
I
OUT
= 100µA, 1.6V < V
CC
< 2.7V
I
OUT
= 500µA, 2.7V < V
CC
< 5.5V
V
CC
= 5.5V, V
OUT
= 5.5V
V
CC
= 1.6V, V
OUT
= 1.6V
R
PULLUP
= 1MΩ,
C
LOAD
= 15pF, high to low
10mV overdrive
50mV overdrive
1
20
10
I
HYST
1.0
10
0.2
0.4
100
SYMBOL
CMRR
V
REF -
0.05
CONDITIONS
MIN
TYP
1.5
MAX
4.0
V
REF
±10
UNITS
mV/V
V
nA
V/V
µV
RMS
V
nA
µs
MAX965–MAX970
Reference Voltage
V
REF
V
Source Current
Sink Current
Output Voltage Noise
I
REF+
I
REF-
µA
nA
µV
RMS
__________________________________________Typical Operating Characteristics
(V
CC
= +3.0V, R
PULLUP
= 100kΩ, V
CM
= 0V, T
A
= +25°C, unless otherwise noted.)
MAX965 SUPPLY CURRENT
vs. TEMPERATURE
MAX965-TOC1b
MAX966 SUPPLY CURRENT
vs. TEMPERATURE
MAX965-TOC2b
MAX967/MAX968 SUPPLY CURRENT
vs. TEMPERATURE
14
13
SUPPLY CURRENT (µA)
12
11
10
9
8
7
6
5
100
-60
-40
-20
0
20
40
V
CC
= 2.0V
V
IN+
> V
IN-
60
80
100
V
CC
= 3.0V
V
CC
= 5.0V
MAX965-TOC3b
13
12
11
SUPPLY CURRENT (µA)
10
9
8
7
6
5
4
3
-60
-40
-20
0
20
40
60
80
V
CC
= 2.0V
V
IN+
> V
IN-
V
CC
= 3.0V
V
CC
= 5.0V
9.0
8.5
8.0
SUPPLY CURRENT (µA)
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
V
CC
= 2.0V
V
IN+
> V
IN-
-60
-40
-20
0
20
40
60
80
V
CC
= 3.0V
V
CC
= 5.0V
15
100
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
_______________________________________________________________________________________
3
Single/Dual/Quad, Micropower,
Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
MAX965–MAX970
_____________________________Typical Operating Characteristics (continued)
(V
CC
= +3.0V, R
PULLUP
= 100kΩ, V
CM
= 0V, T
A
= +25°C, unless otherwise noted.)
MAX969 SUPPLY CURRENT
vs. TEMPERATURE
MAX965-TOC4b
MAX970 SUPPLY CURRENT
vs. TEMPERATURE
MAX965-TOC5b
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
(EXCLUDES REFERENCE CURRENT)
SUPPLY CURRENT PER COMPARATOR (µA)
MAX965-TOC6b
20
18
SUPPLY CURRENT (µA)
16
V
CC
= 5.0V
14
12
10
V
CC
= 2.0V
8
-60
-40
-20
0
20
40
60
80
V
IN+
> V
IN-
V
CC
= 3.0V
16
15
14
SUPPLY CURRENT (µA)
13
12
11
10
9
8
7
V
CC
= 2.0V
V
IN+
> V
IN-
-60
-40
-20
0
20
40
60
80
V
CC
= 5.0V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
V
IN+
> V
IN-
0
0
1
2
3
4
5
V
CC
= 3.0V
100
100
6
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
MAX965 SUPPLY CURRENT
vs. SUPPLY VOLTAGE
(INCLUDES REFERENCE CURRENT)
MAX965/70-TOC7a
COMPARATOR OUTPUT SHORT-CIRCUIT
SINK CURRENT vs. TEMPERATURE
OUTPUT SHORT-CIRCUIT SINK CURRENT (mA)
MAX965/70 -TOC8a
COMPARATOR OUTPUT
LOW VOLTAGE vs. SINK CURRENT
4.5
OUTPUT LOW VOLTAGE (V)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
V
CC
= 2V V
CC
= 3V
V
CC
= 5V
V
IN+
= < V
IN-
MAX965/70-09a
14
12
SUPPLY CURRENT (µA)
10
8
6
4
2
V
IN+
> V
IN-
0
0
1
2
3
4
5
14
12
V
CC
= 5V
10
8
6
4
2
0
V
CC
= 2V
V
CC
= 3V
V
IN+
< V
IN-
5.0
0
-60
-40
-20
0
20
40
60
80
100
0
2
4
6
8
10
12
TEMPERATURE (°C)
SINK CURRENT (mA)
6
SUPPLY VOLTAGE (V)
PROPAGATION DELAY (t
PD-
)
vs. TEMPERATURE
MAX965-TOC10a
PROPAGATION DELAY (t
PD-
)
vs. CAPACITIVE LOAD
V
OD
= 50mV
60
50
MAX4108/9-11a
PROPAGATION DELAY (t
PD-
)
vs. INPUT OVERDRIVE
MAX965-TOC12a
14
13
12
11
DELAY (µs)
V
CC
= 5.0V
V
CC
= 3.0V
V
CC
= 2.0V
70
30
25
20
DELAY (µs)
40
30
20
10
V
CC
= 2.0V
V
CC
= 3.0V
9
8
7
6
5
4
-60
DELAY (µs)
10
15
V
CC
= 2.0V
10
5
V
CC
= 5.0V
V
CC
= 3.0V
V
OD
= 50mV
0
-40
-20
0
20
40
60
80
100
0.001
0.01
V
CC
= 5.0V
0.1
0
0
20
40
60
80 100
120 140 160
INPUT OVERDRIVE (mV)
TEMPERATURE (°C)
CAPACITIVE LOAD (µF)
4
_______________________________________________________________________________________
Single/Dual/Quad, Micropower,
Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
MAX965–MAX970
_____________________________Typical Operating Characteristics (continued)
(V
CC
= +3.0V, R
PULLUP
= 100kΩ, V
CM
= 0V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT PER COMPARATOR
vs. OUTPUT TRANSITION FREQUENCY
MAX965/70 TOC13A
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX965/70-TOC14a
INPUT BIAS CURRENT
vs. TEMPERATURE
3.5
INPUT BIAS CURRENT (pA)
3.0
2.5
2.0
1.5
1.0
0.5
0
V
CC
= 3.0V
V
CC
= 5.0V
MAX965/70-TOC15a
4.0
SUPPLY CURRENT PER COMPARATOR (µA)
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
0.01
0.1
1
10
V
CC
= 1.6V
V
CC
= 5.5V
200
190
INPUT OFFSET VOLTAGE (µV)
180
170
160
150
140
130
120
110
100
4.0
100
-60
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
OUTPUT TRANSITION FREQUENCY (kHz)
TEMPERATURE (°C)
TEMPERATURE (°C)
PROGRAMMED HYSTERESIS
vs. COMMON-MODE VOLTAGE
MAX965/70 TOC16
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX965/70 TOC6a
REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
1.237
REFERENCE VOLTAGE (V)
1.235
1.233
1.231
1.229
1.227
1.225
1.223
MAX965/70-TOC13
40
PROGRAMMED HYSTERESIS (mV)
35
30
25
20
15
10
5
0
0
V
CC
= 5.0V
V
HYST
= 22mV (PROGRAMMED)
1.2345
V
CC
= 5V
1.239
REFERENCE VOLTAGE (V)
1.2340
1.2335
1.2330
V
CC
= 2V
V
CC
= 3V
1.2320
-60
-40
-20
0
20
40
60
80
100
1.2325
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
COMMON-MODE VOLTAGE (V)
1.0
1.8
2.6
3.4
V
CC
(V)
4.2
5.0
5.8
TEMPERATURE (°C)
REFERENCE VOLTAGE
vs. SOURCE CURRENT
MAX965/70-TOC18a
PROPAGATION DELAY (t
PD+
)
MAX965/70-TOC15
1.4
1.3
REFERENCE VOLTAGE (V)
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0
100
200
300
400
500
600
PROPAGATION DELAY (t
PD-
)
MAX965/70-TOC16b
V
CC
= 3V
IN+
50mV/div
IN+
50mV/div
V
CC
= 3V
OUT
2V/div
OUT
2V/div
700
2µs/div
2µs/div
SOURCE CURRENT (µA)
_______________________________________________________________________________________
5
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