MAX9021

Features:

 Low-Cost Solution Available in Space-Saving SC70 Packages (Half the Size of SOT23)
 Low 2.8A Supply Current
 3s Propagation Delay
 Internal 4mV Comparator Hysteresis
 Comparator Output Swings Rail-to-Rail®
 2.5 to 5.5V Single-Supply Voltage Range
 No Phase Reversal for Overdriven Inputs
 Space-Saving Packages
         5-Pin SC70 (MAX9021)
         8-Pin SOT23 (MAX9022)
         8-Pin MAX (MAX9022)
         14-Pin TSSOP (MAX9024)


Application

Battery-Powered
Portable Systems
Mobile Communications
Sensor-Signal Detection
Photodiode Preamps
Digital Line Receivers
Keyless Entry Systems
Threshold Detectors/
Discriminators


Pinout




Specifications

Supply Voltage (V_DD to V_SS) ...............................................................-0.3V to +6V
Voltage Inputs (IN+, IN- to V_SS). ............................................-0.3V to (V_DD + 0.3V)
Differential Input Voltage (IN+ to IN-)...............................................................6.6V
Output Short-Circuit Duration .............................................2s to Either V_DD or V_SS
Current into Any Pin ........................................................................................20mA
Continuous Power Dissipation (T_A = +70°C)
        5-Pin SC70 (derate 3.1mW/°C above +70°C).....................................247mW
        5-Pin SOT23 (derate 7.1mW/°C above +70°C)...................................571mW
        8-Pin SOT23 (derate 9.1mW/°C above +70°C)...................................727mW
        8-Pin MAX (derate 4.5mW/°C above +70°C) ...................................362mW
        8-Pin SO (derate 5.88mW/°C above +70°C)......................................471mW
       14-Pin TSSOP (derate 9.1mW/°C above +70°C) ................................727mW
       14-Pin SO (derate 8.3mW/°C above +70..............................................667mW
Operating Temperature Range Automotive Application...............-40°C to +125°C
Junction Temperature..................................................................................+150°C
Storage Temperature Range .......................................................-65°C to +150°C
Lead Temperature (soldering, 10s) .............................................................+300°C


Description

The MAX9021/MAX9022/MAX9024 single/dual/quad comparators are optimized for low-power consumption while still providing a fast output response. MAX9021 are designed for single-supply applications from 2.5V to 5.5V, but can also operate from dual supplies. These comparators have a 3s propagation delay and consume 2.8A of supply current per comparator over the -40°C to +125°C operating temperature range. The combination of low-power, single-supply operation down to 2.5V, and ultra-small footprint makes these MAX9021 ideal for portable applications.

The MAX9021/MAX9022/MAX9024 have 4mV of built-in hysteresis to provide noise immunity and prevent oscillations even with a slow-moving input signal. The input common-mode range extends from the negative supply to within 1.1V of the positive supply. The design of the comparator-output stage of MAX9021 substantially reduces switching current during output transitions, eliminating powersupply glitches.

The MAX9021 single comparator is available in tiny 5- pin SC70 and SOT23 packages. The MAX9022 dual comparator is available in 8-pin SOT23, MAX, and SO packages, and the MAX9024 quad comparator is available in 14-pin TSSOP and SO packages.