MAX941C/D MAXIM [Maxim Integrated Products], MAX941C/D Datasheet

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MAX941C/D

Manufacturer Part Number
MAX941C/D
Description
High-Speed, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
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 pull-up 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 package. Both the single and dual MAX942
are available in 8-pin DIP and SO packages. The quad
MAX944 comes in 14-pin DIP and narrow SO pack-
ages.
________________________Applications
19-0229; Rev 3; 6/97
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
_______________General Description
__________________________________________________________Pin Configurations
TOP VIEW
3V/5V Systems
Battery-Powered Systems
Threshold Detectors/Discriminators
Line Receivers
Zero-Crossing Detectors
Sampling Circuits
SHDN
IN +
IN-
V +
1
2
3
4
DIP/SO/ MAX
________________________________________________________________ Maxim Integrated Products
MAX941
Rail-to-Rail Single-Supply Comparators
8
7
6
5
N.C.
OUT
GND
LATCH
High-Speed, Low-Power, 3V/5V,
OUTA
INA +
INA-
GND
1
2
3
4
DIP/SO/ MAX
A
MAX942
____________________________Features
Ordering Information continued at end of data sheet.
* Dice are specified at T
______________Ordering Information
MAX941EPA
MAX941ESA
MAX941EUA
MAX941MJA
MAX941CPA
MAX941CSA
MAX941C/D
Available in µMAX Package
Optimized for 3V and 5V Applications
(operation down to 2.7V)
Fast, 80ns Propagation Delay (5mV overdrive)
Rail-to-Rail Input Voltage Range
Low Power:
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)
B
1mW Power Dissipation per Comparator (3V)
350µA Supply Current
PART
8
7
6
5
V +
OUTB
INB-
INB +
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
A
OUTA
OUTB
INA +
INB +
INA-
INB-
= +25°C, DC parameters only.
V +
1
2
3
4
5
6
7
A
B
DIP/SO
MAX944
PIN-PACKAGE
D
C
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 µMAX
8 CERDIP
14
13
12
11
10
9
8
OUTD
IND-
IND +
GND
INC +
INC-
OUTC
1

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MAX941C/D Summary of contents

Page 1

... Internal Hysteresis for Clean Switching Outputs Swing 200mV of Power Rails CMOS/TTL-Compatible Outputs Output Latch (MAX941 only) Shutdown Function (MAX941 only) ______________Ordering Information PART MAX941CPA MAX941CSA MAX941C/D MAX941EPA MAX941ESA MAX941EUA MAX941MJA Ordering Information continued at end of data sheet. * Dice are specified at T MAX942 1 ...

Page 2

High-Speed, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators ABSOLUTE MAXIMUM RATINGS Power-Supply Ranges Supply Voltage V+ to GND ................................................+7V Differential Input Voltage ..........................-0.3V to (V+ + 0.3V) Common-Mode Input Voltage ..................-0.3V to (V+ + 0.3V) — – — — — – L ...

Page 3

Rail-to-Rail Single-Supply Comparators ELECTRICAL CHARACTERISTICS (continued) (V+ = 2.7V to 6.0V unless otherwise noted. Typical values are at T MIN MAX A PARAMETER SYMBOL Supply Current per Comparator I Power Dissipation per PD Comparator ...

Page 4

High-Speed, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators __________________________________________Typical Operating Characteristics (V+ = 3.0V +25°C, unless otherwise noted.) A PROPAGATION DELAY vs. INPUT OVERDRIVE 100 ...

Page 5

Rail-to-Rail Single-Supply Comparators ____________________________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. -55°C ...

Page 6

High-Speed, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators _____________________________Typical Operating Characteristics (continued) (V+ = 3.0V +25°C, unless otherwise noted.) A PROPAGATION DELAY (t PD GND 20ns/div INPUT STEP = 100mV t PD+ ______________________________________________________________Pin ...

Page 7

Rail-to-Rail Single-Supply Comparators V TRIP+ V HYST V TRIP- COMPARATOR OUTPUT Figure 1. Input and Output Waveform, Noninverting Input Varied _______________Detailed Description The MAX941/MAX942/MAX944 single-supply compara- tors feature internal hysteresis, high speed, and low power. Their outputs are guaranteed to ...

Page 8

High-Speed, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators DIFFERENTIAL INPUT VOLTAGE LATCH OUT Figure 2. MAX941 Timing Diagram with Latch Operator Output Stage Circuitry The MAX941/MAX942/MAX944 contain a ...

Page 9

Rail-to-Rail Single-Supply Comparators 2.5k IN+ TO INTERNAL CIRCUITRY TO INTERNAL IN– CIRCUITRY 2.5k Figure 3. Input Stage Circuitry V VREFC V DD SERIAL DIGITAL SDI 8-BIT DAC INPUT MAX512 DACOUTC V GND SS ANALOG IN Figure 5. 3.3V Digitally Controlled ...

Page 10

High-Speed, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparators _Ordering Information (continued) PART TEMP. RANGE MAX942CPA 0°C to +70°C MAX942CSA 0°C to +70°C MAX942C/D 0°C to +70°C MAX942EPA -40°C to +85°C MAX942ESA -40°C to +85°C MAX942EUA -40°C to +85°C MAX942MJA -55°C to +125°C ...

Page 11

Rail-to-Rail Single-Supply Comparators ________________________________________________________Package Information ______________________________________________________________________________________ High-Speed, Low-Power, 3V/5V, 11 ...

Page 12

High-Speed, Low-Power, 3V/5V, Rail-to-Rail 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 ...

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