19-2064; Rev 3; 1/10
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
General Description
The MAX9140/MAX9141 are single and the MAX9142/
MAX9144 are dual/quad high-speed comparators opti-
mized for systems powered from a 3V or 5V supply. The
MAX9141 features latch enable and device shutdown.
These devices combine high speed, low power, and
rail-to-rail inputs. Propagation delay is 40ns, while sup-
ply current is only 150µA per comparator.
The input common-mode range of the MAX9140/
MAX9141/MAX9142/MAX9144 extends beyond both
power-supply rails. The outputs pull to within 0.3V of
either supply rail without external pullup circuitry, mak-
ing these devices ideal for interface with both CMOS
and TTL logic. All input and output pins can tolerate a
continuous short-circuit fault condition to either rail.
Internal hysteresis ensures clean output switching, even
with slow-moving input signals.
The MAX9140/MAX9141/MAX9142/MAX9144 are high-
er-speed, lower-power, and lower-cost upgrades to
industry-standard comparators MAX941/MAX942/
MAX944.
The MAX9140 are offered in tiny 5-pin SC70 and SOT23
packages. The MAX9141 and MAX9142 are available in
8-pin SOT23 and SO packages, while the MAX9144 is
available in both 14-pin SO and TSSOP packages.
Features
♦
Fast, 40ns Propagation Delay (10mV Overdrive)
♦
Low Power
150µA Supply Current Per Comparator (3V)
♦
Optimized for 3V and 5V Applications
♦
Rail-to-Rail Input Voltage Range
♦
Low, 500µV Offset Voltage
♦
Internal Hysteresis for Clean Switching
♦
Outputs Swing 300mV of Power Rails
♦
CMOS/TTL-Compatible Outputs
♦
Output Latch (MAX9141 Only)
♦
Shutdown Function (MAX9141 Only)
♦
Available in SC70 and SOT23 Packages
MAX9140/MAX9141/MAX9142/MAX9144
Ordering Information
PART*
MAX9140AAUK+T
MAX9140AAXK+T
MAX9140AAXK/V+T
MAX9140EXK-T
MAX9140EUK-T
MAX9141EKA-T
MAX9141ESA
MAX9142EKA-T
MAX9142ESA
MAX9144EUD
MAX9144ESD
PIN-PACKAGE
5 SOT23
5 SC70
5 SC70
5 SC70
5 SOT23
8 SOT23
8 SO
8 SOT23
8 SO
14 TSSOP
14 SO
TOP MARK
+AFEJ
+ASW
+AUG
ACC
ADQP
AAFD
—
AAFE
—
—
—
Applications
Line Receivers
Battery-Powered Systems
Threshold Detectors/Discriminators
3V/5V Systems
Zero-Crossing Detectors
Sampling Circuits
Note:
All E-grade devices are specified over the -40°C to +85°C
operating temperature range. All A-grade devices are specified
over the -40°C to +125°C operating temperature range.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
-Denotes
a package containing lead(Pb).
T = Tape and reel.
/V denotes an automotive qualified part.
Pin Configurations
TOP VIEW
OUTA 1
OUT
1
14 OUTD
MAX9140
5
V
CC
V
CC
1
2
IN+
MAX9141
8
7
6
5
N.C.
OUT
SHDN
LE
OUTA
INA-
1
2
MAX9142
8
7
INA- 2
V
CC
OUTB
INB-
INB+
V
CC
4
INB+ 5
INB- 6
OUTB 7
INA+ 3
A
MAX9144
D
13 IND-
12 IND+
11 GND
GND
2
A
B
SOT23/SO
IN- 3
IN+
3
4
IN-
GND 4
INA+ 3
GND 4
6
5
B
C
10 INC+
9
8
INC-
OUTC
SOT23/SO
SC70/SOT23
TSSOP/SO
________________________________________________________________Maxim
Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
MAX9140/MAX9141/MAX9142/MAX9144
ABSOLUTE MAXIMUM RATINGS
Power-Supply Ranges
Supply Voltage (V
CC
to GND)...........................................+6V
Differential Input Voltage .......................-0.3V to (V
CC
+ 0.3V)
Common-Mode Input Voltage to GND ..-0.3V to (V
CC
+ 0.3V)
LE
Input Voltage (MAX9141 only) .........-0.3V to (V
CC
+ 0.3V)
SHDN
Input Voltage (MAX9141 only)....-0.3V to (V
CC
+ 0.3V)
Current into Input Pins ......................................................±20mA
Input/Output Short-Circuit Duration to
V
CC
or GND .....................................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C) .............247mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........571mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C)...........727mW
8-Pin SO (derate 5.9mW/°C above +70°C)..............470.6mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ........727mW
14-Pin SO (derate 8.33mW/°C above +70°C)..........666.7mW
Operating Temperature Range
E grade ...........................................................-40°C to +85°C
A grade .........................................................-40°C to +125°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
= 5V, V
CM
= 0V,
SHDN
=
LE
= V
CC
(MAX9141 only), C
L
= 15pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 1)
PARAMETER
Operating Supply Voltage
Input Voltage Range
SYMBOL
V
CC
V
CMR
(Note 2)
(Note 3)
T
A
= +25°C
Input Offset Voltage
Input Hysteresis
Input Bias Current
Input Offset Current
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
V
OS
V
HYST
I
B
I
OS
CMRR
PSRR
(Note 4)
(Note 5)
(Note 6)
T
A
= -40°C to +85°C
MAX9140AA_ _
8
80
80
V
CC
-
0.425
V
CC
- 0.47
0.3
0.04
0.425
0.45
1
V
µA
V
CC
-
0.3
T
A
= -40°C to +85°C
MAX9140AA_ _
1.5
90
320
350
120
140
T
A
= -40°C to +85°C
MAX9140AA_ _
T
A
= -40°C to +85°C
MAX9140AA_ _
T
A
= -40°C to +85°C
MAX9140AA_ _
Output Low Voltage
Output Leakage Current
V
OL
I
LEAK
I
SINK
= 4mA
T
A
= -40°C to +85°C
MAX9140AA_ _
800
850
750
800
CONDITIONS
MIN
2.7
-0.2
0.5
TYP
MAX
5.5
V
CC
+
0.2
2.0
4.5
6.0
mV
nA
nA
µV/V
µV/V
mV
UNITS
V
V
T
A
= -40°C to +85°C
MAX9140AA_ _
V
CC
= 5.5V
(Note 7)
2.7V
≤
V
CC
≤
5.5V
I
SOURCE
= 4mA
Output High Voltage
V
OH
V
SHDN
= GND, MAX9141 only (Note 8)
2
_______________________________________________________________________________________
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V, V
CM
= 0V,
SHDN
=
LE
= V
CC
(MAX9141 only), C
L
= 15pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MAX9141
MAX9140,
T
A
= -40°C to +85°C
MAX9140AA_ _
MAX9142/MAX9144
Supply Current (Per Comparator)
I
CC
V
CM
= V
CC
= 5V
MAX9141
MAX9140,
T
A
= -40°C to +85°C
MAX9140AA_ _
MAX9142/MAX9144
MAX9141 only,
SHDN
= GND;
V
CC
= V
CM
= 3V
Propagation Delay
Differential Propagation Delay
Propagation Delay Skew
Logic Input-Voltage High
Logic Input-Voltage Low
Logic Input Current
Data-to-Latch Setup Time
Latch-to-Data Hold Time
Latch Pulse Width
Latch Propagation Delay
Shutdown Enable Time
V
IH
V
IL
I
IL
, I
IH
t
S
t
H
t
LPW
t
LPD
t
PD+
,
t
PD-
dt
PD
V
CC
= 3V, V
OD
= 10mV
V
OD
= 10mV (Note 9)
V
OD
= 10mV (Note 10)
(Note 11)
(Note 11)
V
LOGIC
= 0 to V
CC
(Note 11)
(Note 12)
(Note 12)
(Note 12)
(Note 12)
(Note 13)
(V
CC
/2)
+0.4
165
12
40
2
2
V
CC
/2
V
CC
/2
2
16
16
45
60
1
(V
CC
/2)
-0.4
10
150
200
165
MIN
TYP
165
150
MAX
275
250
360
250
320
300
400
300
30
ns
ns
ns
V
V
µA
ns
ns
ns
ns
µs
µA
UNITS
MAX9140/MAX9141/MAX9142/MAX9144
V
CM
= V
CC
= 3V
Shutdown Disable Time
(Note 13)
5
µs
Note 1:
All devices are 100% production tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Note 2:
Inferred from PSRR test.
Note 3:
Inferred from CMRR test. Note also that either or both inputs can be driven to the absolute maximum limit (0.3V beyond either
supply rail) without damage or false output inversion.
Note 4:
V
OS
is defined as the center of the input-referred hysteresis zone. See Figure 1.
Note 5:
The input-referred trip points are the extremities of the differential input voltage required to make the comparator output
change state. The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis
zone. See Figure 1.
Note 6:
The polarity of I
B
reverses direction as V
CM
approaches either supply rail.
Note 7:
Specified over the full common-mode voltage range (V
CMR
).
Note 8:
Specification is for current flowing into or out of the output pin for V
OUT
driven to any voltage from V
CC
to GND while the part is
in shutdown.
Note 9:
Specified between any two channels in the MAX9142/MAX9144.
Note 10:
Specified as the difference between t
PD+
and t
PD-
for any one comparator.
Note 11:
Applies to the MAX9141 only for both
SHDN
and
LE.
Note 12:
Applies to the MAX9141 only. Comparator is active with
LE
driven high and is latched with
LE
driven low (V
OD
= 10mV). See
Figure 2.
Note 13:
Applicable to the MAX9141 only. Comparator is active with the
SHDN
driven high and is shutdown with
SHDN
driven low.
Shutdown enable time is the delay when the
SHDN
is driven high to the time the output is valid. Shutdown disable time is the
delay when the
SHDN
is driven low to the time the comparator shuts down.
_______________________________________________________________________________________
3
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
MAX9140/MAX9141/MAX9142/MAX9144
Typical Operating Characteristics
(V
CC
= 3.0V, V
CM
= 0V, C
L
= 15pF, V
OD
= 10mV, T
A
= +25°C, unless otherwise noted.)
MAX9140 SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9140 toc01
OUTPUT LOW VOLTAGE
vs. TEMPERATURE
I
SINK
= 4mA
328
MAX9140 TOC02
300
250
T
A
= +85°C
200
150
100
50
0
3
4
V
CC
(V)
5
6
T
A
= -40°C
330
V
OL
(mV)
I
CC
(µA)
T
A
= +25°C
326
324
322
320
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX9140 TOC03
OUTPUT SHORT-CIRCUIT (SINK) CURRENT
vs. TEMPERATURE
OUTPUT SHORT-CIRCUIT SINK CURRENT (mA)
MAX9140 TOC04
5.20
I
SOURCE
= 4mA
V
CC
= 5.5V
50
5.15
V
OH
(V)
45
5.10
40
5.05
5.00
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
35
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
OUTPUT SHORT-CIRCUIT (SOURCE)
CURRENT vs. TEMPERATURE
OUTPUT SHORT-CIRCUIT SOURCE CURRENT (mA)
MAX9140 TOC05
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX9140 toc06
45
140
120
INPUT CURRENT (nA)
100
80
60
40
20
35
25
15
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
0
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
4
_______________________________________________________________________________________
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
Typical Operating Characteristics (continued)
(V
CC
= 3.0V, V
CM
= 0V, C
L
= 15pF, V
OD
= 10mV, T
A
= +25°C, unless otherwise noted.)
MAX9140/MAX9141/MAX9142/MAX9144
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9140 toc07
TRIP POINT
vs. TEMPERATURE
0.8
0.6
0.4
V
OS
(mV)
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
V
TRIP-
V
TRIP+
MAX9140 toc08
500
400
300
200
V
OS
(µV)
100
0
-100
-200
-300
-400
-500
-50
-25
0
25
50
75
1.0
100
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT VOLTAGE RANGE
vs. TEMPERATURE
V
CC
= 5.5V
6
INPUT VOLTAGE RANGE (V)
V
CMR
+
5
4
3
2
1
0
-1
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
V
CMR
-
20
0
MAX9140TOC09
PROPAGATION DELAY
vs. INPUT OVERDRIVE
MAX9140 toc10
7
45
PROPAGATION DELAY (nS)
40
t
PD+
35
t
PD-
30
25
20
40
60
80
100
INPUT OVERDRIVE (mV)
PROPAGATION DELAY
vs. TEMPERATURE
MAX9140 toc11
PROPAGATION DELAY
vs. CAPACITIVE LOAD
MAX9140 toc12
50
55
50
PROPAGATION DELAY (ns)
45
40
35
30
25
t
PD-
t
PD+
PROPAGATION DELAY (ns)
45
t
PD+
40
t
PD-
35
30
25
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
20
15
30
45
60
75
90
105
CAPACITIVE LOAD (pF)
_________________________________________________________________________________________________
5
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