Document
MAX965–MAX970
19-1226; Rev 3; 2/07
Single/Dual/Quad, Micropower, Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
General Description
The MAX965–MAX970 single/dual/quad micropower comparators feature rail-to-rail inputs and outputs, and fully specified single-supply operation down to +1.6V. These devices draw less than 5µA per comparator and have open-drain outputs that can be pulled beyond VCC to 6V (max) above ground. In addition, their rail-to-rail input common-mode voltage range makes these comparators suitable for ultra-low-voltage operation. A +1.6V to +5.5V single-supply operating voltage range makes the MAX965 family of comparators ideal for 2-cell battery-powered applications. The MAX965/MAX967/ MAX968/MAX969 offer programmable hysteresis and an internal 1.235V ±1.5% reference. All devices are available in either space-saving 8-pin µMAX® or 16-pin QSOP packages.
________________________Applications
2-Cell Battery-Powered/Portable Systems Window Comparators Threshold Detectors/Discriminators Mobile Communications Voltage-Level Translation Ground/Supply-Sensing Applications
_____________________Selector Guide
____________________________Features
♦ Ultra-Low Single-Supply Operation down to +1.6V
♦ Rail-to-Rail Common-Mode Input Voltage Range
♦ 3µA Quiescent Supply Current per Comparator
♦ Open-Drain Outputs Swing Beyond VCC ♦ 1.235V ±1.5% Precision Internal Reference
(MAX965/967/968/969) ♦ 10µs Propagation Delay (50mV overdrive)
♦ Available in Space-Saving Packages: 8-Pin µMAX (MAX965–MAX968) 16-Pin QSOP (MAX969/MAX970)
Ordering Information
PART
TEMP RANGE PINPACKAGE
MAX965ESA
-40°C to +85°C 8 SO
MAX965EUA-T -40°C to +85°C 8 µMAX-8
MAX966ESA
-40°C to +85°C 8 SO
MAX966EUA-T -40°C to +85°C 8 µMAX-8
MAX967ESA
-40°C to +85°C 8 SO
MAX967EUA-T -40°C to +85°C 8 µMAX-8
Ordering Information continued on last page.
PKG CODE
S8-2 U8-1 S8-2 U8-1 S8-2 U8-1
Pin Configurations appear at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
__________Typical Operating Circuit
PART INTERNAL REFERENCE COMPARATORS PER PACKAGE PROGRAMMABLE HYSTERESIS
MAX965
Yes
1
Yes
MAX966
No
2
No
MAX967
Yes
2
Yes
MAX968
Yes
2
Yes
MAX969
Yes
4
Yes
MAX970
No
4
No
VIN VCC
3 IN+
7 VCC
OUT 8
4 IN-
5 HYST
6 REF
1.235V
MAX965
GND
1
RPULLUP VOUT
________________________________________________________________ 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.
Single/Dual/Quad, Micropower, Ultra-Low-Voltage, Rail-to-Rail I/O Comparators
MAX965–MAX970
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC) ............................................................+6V Voltages
IN_-, IN_+, REF, HYST ..........................-0.3V to (VCC + 0.3V) OUT_ ...............................................................-0.3V to +6.0V
Current into Input Pins ......................................................±20mA
Duration of OUT_ Short Circuit to GND or VCC ..........Continuous Continuous Power Dissipation
8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW
8-Pin µMAX (derate 4.10mW/°C above +70°C) ..........330mW 14-Pin SO (derate 8.33mW/°C above +70°C).............667mW 16-Pin SO (derate 8.70mW/°C above +70°C).............696mW 16-Pin QSOP (derate 5.70mW/°C above +70°C)........457mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C
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. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +1.6V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 3V and TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
POWER SUPPLIES
UNITS
Supply Voltage Range
Comparator Minimum Operating Voltage
All packages, TA = 0°C to +85°C VCC SO/QSOP packages, TA = -40°C to +85°C
µMAX package, TA = -40°C to +85°C
1.6 5.5 1.7 5.5 1.8 5.5
1.0
V V
MAX965
7.0 12
Supply Current
MAX966 ICC MAX967/MAX968
MAX969 MAX970
6.0 10 10 16 µA 14 22 11 18
Power-Up Time (VCC to output valid)
VCC stepped 0V to 5V
20 µs
COMPARATOR Power-Supply Rejection Ratio Common-Mode Voltage Range
Input Offset Voltage
Input Hysteresis Input Bias Current Input Offset Current Input Capacitance
PSRR VCMR
VOS
VHYST IB IOS CIN
1.7V ≤ VCC ≤ 5.5V
TA = +25°C
TA = -40°C to +85°C
Common-mode range = -0.25V to 1.3V, VCC > 1.8V
SO package QSOP package
µMAX 0°C to +85°C package -40°C to +85°C
SO package
Full commonmode ra.