MAX942 Maxim, MAX942 Datasheet

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MAX942

Manufacturer Part Number
MAX942
Description
The MAX941/MAX942/MAX944 are single/dual/quad high-speed comparators optimized for systems powered from a 3V or 5V supply
Manufacturer
Maxim
Datasheet

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The MAX941/MAX942/MAX944 are single/dual/quad
high-speed comparators optimized for systems pow-
ered from a 3V or 5V supply. These devices combine
high speed, low power, and rail-to-rail inputs.
Propagation delay is 80ns, while supply current is only
350µA per comparator.
The input common-mode range of the MAX941/
MAX942/MAX944 extends beyond both power-supply
rails. The outputs pull to within 0.4V of either supply rail
without external pullup circuitry, making 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 MAX941 fea-
tures latch enable and device shutdown.
The single MAX941 and dual MAX942 are offered in a
tiny µMAX
are available in 8-pin DIP and SO packages. The quad
MAX944 comes in 14-pin DIP and narrow SO packages.
________________________Applications
19-0229; Rev 9; 3/09
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.
TOP VIEW
3V/5V Systems
Battery-Powered Systems
Threshold Detectors/Discriminators
Line Receivers
Zero-Crossing Detectors
Sampling Circuits
®
High-Speed, Low-Power, 3V/5V, Rail-to-Rail,
package. Both the single and dual MAX942
SHDN
IN +
IN-
V +
1
2
3
4
________________________________________________________________ Maxim Integrated Products
DIP/SO/µMAX
MAX941
General Description
8
7
6
5
N.C.
OUT
GND
LATCH
OUTA
INA +
INA-
GND
Single-Supply Comparators
1
2
3
4
DIP/SO/µMAX
A
MAX942
♦ Available in µMAX Package
♦ Optimized for 3V and 5V Applications
♦ Fast, 80ns Propagation Delay (5mV Overdrive)
♦ Rail-to-Rail Input Voltage Range
♦ Low 350µA Supply Current per Comparator
♦ Low, 1mV Offset Voltage
♦ Internal Hysteresis for Clean Switching
♦ Outputs Swing 200mV of Power Rails
♦ CMOS/TTL-Compatible Outputs
♦ Output Latch (MAX941 Only)
♦ Shutdown Function (MAX941 Only)
____________________________Features
Ordering Information continued at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX941CPA
MAX941CSA
MAX941EPA
MAX941ESA
MAX941EUA-T
MAX941AUA-T
for Automotive Applications
(Operation Down to 2.7V)
B
PART
8
7
6
5
V +
OUTB
INB-
INB +
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
0°C to +70°C
0°C to +70°C
Ordering Information
OUTA
OUTB
INA +
INA-
INB +
INB-
V +
Pin Configurations
1
2
3
4
5
6
7
A
B
DIP/SO
MAX944
PIN-
PACKAGE
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 µMAX
8 µMAX
C
D
14
13
12
11
10
9
8
OUTD
IND-
IND +
GND
INC +
INC-
OUTC
1

Related parts for MAX942

MAX942 Summary of contents

Page 1

... Internal hysteresis ensures clean output switching, even with slow-moving input signals. The MAX941 fea- tures latch enable and device shutdown. The single MAX941 and dual MAX942 are offered in a ® tiny µMAX package. Both the single and dual MAX942 are available in 8-pin DIP and SO packages ...

Page 2

... SO (derate 8.33mW/°C above +70°C)..............667mW Operating Temperature Ranges MAX94_C_ _ .......................................................0°C to +70°C MAX94_E_ _.....................................................-40°C to +85°C MAX94_AUA ..................................................-40°C to +125°C MAX942MSA..................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C CONDITIONS (Note 1) ...

Page 3

... Note 12: Applies to the MAX941 only. Comparator is active with (see Figure 2). Note 13: Applicable to the MAX941 only. Comparator is active with low. Shutdown disable time is the delay when Note 14: The MAX941_UA and MAX942_UA are 100% production tested at T guaranteed by design. _______________________________________________________________________________________ Single-Supply Comparators CONDITIONS ...

Page 4

... OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT 3 +125° +25°C 2 -55°C A 2.8 2.7 2.6 2 100 1000 6 SOURCE CURRENT (µA) MAX942 TOTAL SUPPLY CURRENT vs. SUPPLY VOLTAGE 800 T = +125°C A 700 T = +25°C A 600 500 T = -55°C A 400 300 SUPPLY VOLTAGE (V) 400 500 ...

Page 5

High-Speed, Low-Power, 3V/5V, Rail-to-Rail, ____________________________Typical Operating Characteristics (continued) (V+ = 3.0V +25°C, unless otherwise noted.) A MAX944 TOTAL SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.00 1. +125° +25°C A 1.25 1. ...

Page 6

... Operating Characteristics (continued) (V+ = 3.0V +25°C, unless otherwise noted.) A PROPAGATION DELAY ( GND 20ns/div INPUT STEP = 100mV t PD+ ______________________________________________________________Pin Description PIN NAME MAX941 MAX942 MAX944 — OUTA — — — — — ...

Page 7

... I also allows for the input common-mode range of the MAX941/MAX942/MAX944 to extend beyond both power-supply rails. The output is in the correct logic state if one or both inputs are within the common-mode range. ...

Page 8

... __________Applications Information The high gain bandwidth of the MAX941/MAX942/ MAX944 requires design precautions to realize the comparators’ full high-speed capability. The recom- mended precautions are: , the source Use a printed circuit board with a good, unbro- ken, low-inductance ground plane. ...

Page 9

... ANALOG IN Figure 5. 3.3V Digitally Controlled Threshold Detector _______________________________________________________________________________________ Single-Supply Comparators MAX941 V CC MAX942 MAX944 0 Figure 4. Output Stage Circuitry = 3.3V DD COAX LINE MAX941 Figure 6. Line Transceiver Application MAX941 MAX942 I MAX944 SOURCE I SINK 10kΩ 3V 20kΩ 0V MAX941 CLEAN DIGITAL SIGNAL 20kΩ OUTPUT ...

Page 10

... MAX942MSA/PR -55°C to +125°C MAX942CPA 0°C to +70°C MAX942CSA 0°C to +70°C MAX942EPA -40°C to +85°C MAX942ESA -40°C to +85°C MAX942EUA-T -40°C to +85°C MAX942AUA-T -40°C to +125°C MAX944CPD 0°C to +70°C MAX944CSD 0°C to +70°C MAX944EPD -40°C to +85°C MAX944ESD -40° ...

Page 11

... High-Speed, Low-Power, 3V/5V, Rail-to-Rail, (For the latest package outline information and land patterns www.maxim-ic.com/packages.) PACKAGE TYPE 8 µMAX 8 Plastic DIP Plastic DIP 14 SO ______________________________________________________________________________________ Single-Supply Comparators Package Information PACKAGE CODE U8-1 P8-1 S8-2 P14-3 S14-1 α α DOCUMENT NO. 21-0036 21-0043 21-0041 21-0043 ...

Page 12

... High-Speed, Low-Power, 3V/5V, Rail-to-Rail, High-Speed, Low-Power, 3V/5V, Rail-to-Rail, Single-Supply Comparators Single-Supply Comparators (For the latest package outline information and land patterns www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information (continued) ...

Page 13

... High-Speed, Low-Power, 3V/5V, Rail-to-Rail, (For the latest package outline information and land patterns www.maxim-ic.com/packages TOP VIEW FRONT VIEW ______________________________________________________________________________________ Single-Supply Comparators Package Information (continued 0∞-8∞ L SIDE VIEW INCHES MILLIMETERS DIM MIN MAX MIN ...

Page 14

... Corrected Ordering Information for MAX944ESD 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. 14 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...

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