19-2064; Rev 0; 6/01
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
庐
inputs. Propagation delay is 40ns, while
supply current is only 150碌A 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
o
Fast, 40ns Propagation Delay (10mV Overdrive)
o
Low Power:
0.45mW Power Dissipation Per Comparator (3V)
150碌A Supply Current
o
Optimized for 3V and 5V Applications
(Operation Down to 2.7V)
o
Rail-to-Rail Input Voltage Range
o
Low, 500碌V 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
MAX9140/MAX9141/MAX9142/MAX9144
Ordering Information
PART
MAX9140EXK-T
MAX9140EUK-T
MAX9141EKA-T
MAX9141ESA
MAX9142EKA-T
MAX9142ESA
MAX9144EUD
MAX9144ESD
TEMP.
RANGE
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
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
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AAFE
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Applications
Line Receivers
Battery-Powered Systems
Threshold Detectors/Discriminators
3V/5V Systems
Zero-Crossing Detectors
Sampling Circuits
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
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________Maxim
Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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