
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
supply 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.
Applications
Line Receivers
Battery-Powered Systems
Threshold Detectors/Discriminators
3V/5V Systems
Zero-Crossing Detectors
Sampling Circuits
Features
o
Fast, 40ns Propagation Delay (10mV Overdrive)
o
Low Power:
0.45mW Power Dissipation Per Comparator (3V)
150μA Supply Current
o
Optimized for 3V and 5V Applications
(Operation Down to 2.7V)
o
Rail-to-Rail Input Voltage Range
o
Low, 500μV Offset Voltage
o
Internal Hysteresis for Clean Switching
o
Outputs Swing 300mV of Power Rails
o
CMOS/TTL-Compatible Outputs
o
Output Latch (MAX9141 only)
o
Shutdown Function (MAX9141 only)
o
Available in SC70 and SOT23 Packages
Ordering Information
M
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
________________________________________________________________
Maxim Integrated Products
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.
1
1
2
3
4
8
7
6
5
N.C.
OUT
GND
LE
SHDN
IN-
IN+
V
CC
V
CC
V
CC
INB+
SOT23/SO
1
2
3
4
8
7
6
5
OUTB
INB-
INB+
GND
INA+
INA-
OUTA
MAX9142
SOT23/SO
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OUTD
IND-
IND+
GND
INA+
INA-
OUTA
INC+
INC-
OUTC
OUTB
INB-
TSSOP/SO
MAX9141
MAX9144
TOP VIEW
A
B
A
D
B
C
GND
IN-
IN+
1
5
V
CC
OUT
SC70/SOT23
2
3
4
MAX9140
Pin Configurations
19-2064; Rev 0; 6/01
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PART
TEMP.
RANGE
PIN-
PACKAGE
5 SC70-5
5 SOT23-5
8 SOT23-8
8 SO
8 SOT23-8
8 SO
14 TSSOP
14 SO
TOP
MARK
ACC
ADQP
AAFD
—
AAFE
—
—
—
MAX9140
EXK-T
MAX9140EUK-T
MAX9141
EKA-T
MAX9141ESA
MAX9142
EKA-T
MAX9142ESA
MAX9144
EUD
MAX9144ESD
-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
-40
°
C to +85
°
C
-40
°
C to +85
°
C