19-2064; Rev 0; 6/01
40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators
General Description
Features
ꢀ Fast, 40ns Propagation Delay (10mV Overdrive)
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.
ꢀ Low Power:
0.45mW Power Dissipation Per Comparator (3V)
150µA Supply Current
ꢀ Optimized for 3V and 5V Applications
(Operation Down to 2.7V)
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.
ꢀ 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
The MAX9140/MAX9141/MAX9142/MAX9144 are high-
er-speed, lower-power, and lower-cost upgrades to
industry-standard comparators MAX941/MAX942/
MAX944.
Ordering Information
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.
TEMP.
RANGE
PIN-
PACKAGE
TOP
MARK
PART
MAX9140EXK-T -40°C to +85°C
MAX9140EUK-T -40°C to +85°C
MAX9141EKA-T -40°C to +85°C
5 SC70-5
5 SOT23-5
8 SOT23-8
8 SO
ACC
ADQP
AAFD
—
Applications
Line Receivers
MAX9141ESA
-40°C to +85°C
Battery-Powered Systems
Threshold Detectors/Discriminators
3V/5V Systems
MAX9142EKA-T -40°C to +85°C
8 SOT23-8
8 SO
AAFE
—
MAX9142ESA
MAX9144EUD
MAX9144ESD
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
14 TSSOP
14 SO
—
—
Zero-Crossing Detectors
Sampling Circuits
Pin Configurations
TOP VIEW
OUTA
INA-
OUTD
IND-
1
2
3
4
5
6
7
14
13
12
11
10
9
MAX9140
OUT
GND
IN+
1
2
3
5
4
V
CC
MAX9141
V
1
2
3
4
1
2
3
4
MAX9142
8
7
6
5
N.C.
OUT
8
7
6
5
V
CC
OUTA
INA-
A
B
D
C
CC
+
+
INA
IND
+
IN
OUTB
INB-
A
GND
V
CC
MAX9144
IN-
SHDN
LE
+
INA
+
+
INB
INB-
OUTB
B
INC
GND
+
INB
GND
IN-
INC-
SOT23/SO
SOT23/SO
OUTC
8
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’s website at www.maxim-ic.com.