Datasheet MAX931, MAX932, MAX933, MAX934 (Analog Devices)

19-0194; Rev 1; 2/97
Ultra Low-Power, Low-Cost Comparators with 2% Reference MAX931-MAX934 _______________General Description ____________________________Features
The MAX931-MAX934 single, dual, and quad micropower, ♦
Ultra-Low 4µA Max Quiescent Current
low-voltage comparators plus an on-board 2% accurate
Over Extended Temp. Range (MAX931)
reference feature the lowest power consumption available. ♦
Power Supplies:
These comparators draw less than 4µA supply current
Single +2.5V to +11V
over temperature (MAX931), and include an internal 1.182V ±2% voltage reference, programmable hysteresis,
Dual ±1.25V to ±5.5V
and TTL/CMOS outputs that sink and source current. ♦
Input Voltage Range Includes Negative Supply
Ideal for 3V or 5V single-supply applications, the ♦
Internal 1.182V ±2% Bandgap Reference
MAX931-MAX934 operate from a single +2.5V to +11V ♦
Adjustable Hysteresis
supply (or a ±1.25V to ±5V dual supply), and each comparator’s input voltage range extends from the ♦
TTL-/CMOS-Compatible Outputs
negative supply rail to within 1.3V of the positive supply. ♦
12µs Propagation Delay (10mV Overdrive)
The MAX931-MAX934’s unique output stage continuously ♦
No Switching Crowbar Current
sources as much as 40mA. And by eliminating power- ♦ supply glitches that commonly occur when comparators
40mA Continuous Source Current
change logic states, the MAX931-MAX934 minimize ♦
Available in Space-Saving µMAX Package
parasitic feedback, which makes them easier to use. The single MAX931 and dual MAX932/MAX933 provide a
______________Ordering Information
unique and simple method for adding hysteresis without feedback and complicated equations, using the HYST pin
PART TEMP. RANGE PIN-PACKAGE
and two resistors.
MAX931
CPA 0°C to +70°C 8 Plastic DIP For applications that require increased precision with MAX931CSA 0°C to +70°C 8 SO similar power requirements, see the MAX921-MAX924 data MAX931CUA 0°C to +70°C 8 µMAX sheet. These devices include a 1% precision reference. MAX931EPA -40°C to +85°C 8 Plastic DIP MAX931ESA -40°C to +85°C 8 SO
INTERNAL COMPARATORS INTERNAL PACK- PART 2% PER Ordering Information continued on last page. HYSTERESIS AGE REFERENCE PACKAGE
For similar devices guaranteed over the military temp. range, see the MAX921-MAX924 data sheet. The MAX931, MAX933, and 8-Pin MAX934 are pin-compatible with the 1% accurate MAX921, MAX931 Yes 1 Yes DIP/SO/ MAX923, and MAX924, respectively. The MAX932 and µMAX MAX922 are not pin-compatible. 8-Pin MAX932 Yes 2 Yes DIP/SO/
__________Typical Operating Circuit
µMAX 8-Pin VIN MAX933 Yes 2 Yes DIP/SO/ 7 µMAX V+ 3 IN+ 16-Pin MAX934 Yes 4 No DIP/SO OUT 8 4 IN-
________________________Applications
5 HYST Battery-Powered Systems Threshold Detectors 6 REF MAX931 Window Comparators V- GND Oscillator Circuits 2 1 Alarm Circuits
THRESHOLD DETECTOR ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800