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MAX921

Maxim
Part Number MAX921
Manufacturer Maxim
Description Ultra Low-Power / Single/Dual-Supply Comparators
Published May 2, 2005
Detailed Description Click here for production status of specific part numbers. MAX921–MAX924 Ultra Low-Power, Single/Dual-Supply Comparator...
Datasheet PDF File MAX921 PDF File

MAX921
MAX921

Overview
Click here for production status of specific part numbers.
MAX921–MAX924 Ultra Low-Power, Single/Dual-Supply Comparators General Description The MAX921–MAX924 single, dual, and quad micro-power, low-voltage comparators feature the lowest power consumption available.
These comparators draw less than 4μA supply current over temperature (MAX921/ MAX922), and include an internal 1.
182V ±1% voltage reference, programmable hysteresis, and TTL/CMOS outputs that sink and source current.
Ideal for 3V or 5V single-supply applications, the MAX921– MAX924 operate from a single +2.
5V to +11V supply (or a ±1.
25V to ±5V dual supply), and each comparator’s input voltage range swings from the negative supply rail to within 1.
3V of the positive supply.
The MAX921–MAX924’s unique output stage continuously sources as much as 40mA.
And by eliminating powersupply glitches that commonly occur when comparators change logic states, the MAX921–MAX924 minimize parasitic feedback, which makes them easier to use.
The single MAX921 and dual MAX923 provide a unique and simple method for adding hysteresis without feedback and complicated equations, simply by using the HYST pin and two resistors.
PART INTERNAL 1% PRECISION REFERENCE COMPARATORS PER PACKAGE INTERNAL HYSTERESIS PACKAGE MAX921 MAX922 MAX923 MAX924 Yes No Yes Yes 1 Yes 8-Pin DIP/SO/μMAX 2 No 8-Pin DIP/SO/μMAX 2 Yes 8-Pin DIP/SO/μMAX 4 No 16-Pin DIP/SO/μMAX Applications ●● Battery-Powered Systems ●● Threshold Detectors ●● Window Comparators ●● Oscillator Circuits μMAX is a registered trademark of Maxim Integrated Products, Inc.
Features ●● μMAX® Package—Smallest 8-Pin SO (MAX921/MAX922/MAX923) ●● Ultra-Low 4μA Max Quiescent Current Over Extended Temp.
Range (MAX921) ●● Power Supplies: • Single +2.
5V to +11V • Dual ±1.
25V to ±5.
5V ●● Input Voltage Range Includes Negative Supply ●● Internal 1.
182V ±1% Bandgap Reference ●● Adjustable Hysteresis ●● TTL/CMOS-Compatible Outputs ●● 12μs Propagation Delay (10mV Overdrive) ●...


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