MAX914 Maxim, MAX914 Datasheet

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MAX914

Manufacturer Part Number
MAX914
Description
40ns / Low-Power / 3V/5V / Rail-to-Rail Single-Supply Comparators
Manufacturer
Maxim
Datasheet

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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
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.
19-2064; Rev 0; 6/01
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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.
TOP VIEW
Line Receivers
Battery-Powered Systems
Threshold Detectors/Discriminators
3V/5V Systems
Zero-Crossing Detectors
Sampling Circuits
OUT
GND
IN+
®
1
2
3
inputs. Propagation delay is 40ns, while
SC70/SOT23
MAX9140
________________________________________________________________Maxim Integrated Products
General Description
5
4
V
IN-
40ns, Low-Power, 3V/5V, Rail-to-Rail
CC
GND
V
IN +
IN-
CC
Applications
1
2
3
4
SOT23/SO
MAX9141
Single-Supply Comparators
8
7
6
5
N.C.
OUT
SHDN
LE
OUTA
INA +
o Fast, 40ns Propagation Delay (10mV Overdrive)
o Low Power:
o Optimized for 3V and 5V Applications
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
INA-
GND
MAX9140EXK-T
MAX9140EUK-T
MAX9141EKA-T
MAX9141ESA
MAX9142EKA-T
MAX9142ESA
MAX9144EUD
MAX9144ESD
(Operation Down to 2.7V)
1
2
3
4
0.45mW Power Dissipation Per Comparator (3V)
150µA Supply Current
PART
SOT23/SO
A
MAX9142
B
-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
8
7
6
5
RANGE
Ordering Information
TEMP.
V
OUTB
INB-
INB +
CC
Pin Configurations
OUTA
OUTB
INA +
INA-
INB +
INB-
V
CC
1
2
3
4
5
6
7
PIN-
PACKAGE
5 SC70-5
5 SOT23-5
8 SOT23-8
8 SO
8 SOT23-8
8 SO
14 TSSOP
14 SO
TSSOP/SO
A
B
MAX9144
Features
C
D
14
13
12
11
10
9
8
MARK
ADQP
AAFD
AAFE
ACC
TOP
OUTD
IND-
IND +
GND
INC +
INC-
OUTC
1

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MAX914 Summary of contents

Page 1

... 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. ...

Page 2

... Power Supply Ranges Supply Voltage (V to GND)...........................................+6V CC Differential Input Voltage .......................-0. Common-Mode Input Voltage to GND ..-0. Input Voltage (MAX9141 only) .........-0. SHDN Input Voltage (MAX9141 only)....-0. Input/Output Short-Circuit Duration GND .....................................................Continuous CC 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 ...

Page 3

... Note 12: Applies to the MAX9141 only. Comparator is active with LE driven high and is latched with LE driven low (V 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 ...

Page 4

... Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators (V = 3.0V =15pF 10mV MAX9140 SUPPLY CURRENT vs. SUPPLY VOLTAGE 300 250 T = +85°C A 200 T = +25°C A 150 T = -40°C A 100 OUTPUT HIGH VOLTAGE vs. TEMPERATURE 5.20 5.15 5.10 5.05 5.00 -40 - TEMPERATURE (°C) OUTPUT SHORT-CIRCUIT (SOURCE) CURRENT vs ...

Page 5

Low-Power, 3V/5V, Rail-to-Rail (V = 3.0V =15pF 10mV INPUT OFFSET VOLTAGE vs. TEMPERATURE 500 400 300 200 100 0 -100 -200 -300 -400 -500 -50 -25 0 TEMPERATURE ...

Page 6

... OUTD Comparator D Output — IN+ Noninverting Input — IN- Inverting Input — — — – Shutdown: MAX9141 is active when S — MAX9141 is in shutdown when S The output is latched when LE is low. The latch is transparent when LE — high. — OUT Comparator Output — ...

Page 7

... Figure 1 illustrates the case where IN- is fixed and IN+ is varied. If the inputs were reversed, the figure would look the same, except the output would be inverted. The MAX9141 includes an internal latch that allows storage of comparison results. The L — input impedance high, the latch is transparent (i ...

Page 8

... OUT Figure 2. MAX9141 Timing Diagram with Latch Operator Output Stage Circuitry The MAX9140/MAX9141/MAX9142/MAX9144 contain a current-driven output stage as shown in Figure 4. During an output transition, I SOURCE or pulled to the output pin. The output source or sink current is high during the transition, creating a rapid slew rate ...

Page 9

... Single-Supply Comparators MAX9140 SERIAL MAX9141 DIGITAL MAX9142 INPUT MAX9144 OUTPUT ANALOG IN Figure 5. 3.3V Digitally Controlled Threshold Detector MAX9140 TRANSISTOR COUNT: 158 MAX9141 TRANSISTOR COUNT: 192 MAX9142 TRANSISTOR COUNT: 314 MAX9144 TRANSISTOR COUNT: 620 PROCESS: Bipolar 3V 0 CLEAN DIGITAL SIGNAL V = 3.3V DD VREFC ...

Page 10

Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators ________________________________________________________Package Information 10 ______________________________________________________________________________________ ...

Page 11

Low-Power, 3V/5V, Rail-to-Rail ___________________________________________Package Information (continued) ______________________________________________________________________________________ Single-Supply Comparators 11 ...

Page 12

... Single-Supply Comparators ___________________________________________Package Information (continued) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...

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