19-0450; Rev 0; 11/95
Ult ra -Lo w -P o w e r, Op e n -Dra in ,
S in g le /Du a l-S u p p ly Co m p a ra t o rs
7/1–MAX984
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
The MAX971–MAX974 and MAX981–MAX984 single/
dual/quad low-voltage comparators feature the lowest
p owe r c ons ump tion a va ila b le . The s e mic rop owe r
d e vic e s d ra w le s s tha n 4µA s up p ly c urre nt ove r
temperature (MAX971/MAX972, MAX981/MAX982), and
inc lud e a n inte rna l 1.182V ± 1% (MAX971/MAX973/
MAX974) or ±2% (MAX981–MAX984) voltage reference
and programmable hysteresis.
♦ µMAX Package—Smallest 8-Pin SO
(MAX9_1/MAX9_2/MAX9_3)
♦ Ultra-Low 4µA Max Quiescent Current
Over Extended Temp. Range (MAX971/MAX981)
♦ 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
Ideal for 3V or 5V single-supply applications, these
devices operate from a single +2.5V to +11V supply (or
±1.25V to ±5.5V dual supplies), and each comparator’s
input voltage ranges from the negative supply rail to within
1.3V of the positive supply.
♦ 12µs Propagation Delay (10mV Overdrive)
♦ Output Has Separate GND Pin (MAX9_1/MAX9_4)
The single MAX971 and MAX981 and the dual MAX973
and MAX982/MAX983 provide a unique, simple method
for adding hysteresis without feedback or complicated
e q ua tions , s imp ly b y us ing the HYST p in p lus two
resistors.
________________________Ap p lic a t io n s
Battery-Powered Systems
Level Translators
Threshold Detectors
Oscillator Circuits
The MAX971–MAX974 and MAX981–MAX984’s open-
drain outputs permit wire-ORed configurations. Thanks to
an 11V output range and separate GND pin for the output
transistor (MAX971/MAX974, MAX981/MAX984), these
devices are ideal for level translators and bipolar to single-
ended converters. For similar devices with complementary
output stages, see the MAX921–MAX924 (1% reference)
and the MAX931–MAX934 (2% reference).
Window Comparators
______________Ord e rin g In fo rm a t io n
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 SO
MAX971CPA
MAX971CSA
MAX971CUA
MAX971C/D
8 µMAX
Dice*
Ordering Information continued at end of data sheet.
* Dice are tested at T = +25°C, DC parameters only.
A
__________Typ ic a l Op e ra t in g Circ u it
8-Pin
DIP/SO/µMAX
MAX971
MAX972
MAX973
MAX974
MAX981
MAX982
MAX983
MAX984
1%
None
1%
1
2
2
4
1
2
2
4
Yes
No
V
IN
8-Pin
DIP/SO/µMAX
7
V+
3
IN+
8-Pin
DIP/SO/µMAX
Yes
No
OUT 8
4 IN-
1%
16-Pin DIP/SO
8-Pin
DIP/SO/µMAX
2%
Yes
Yes
Yes
No
HYST
5
8-Pin
DIP/SO/µMAX
2%
MAX971
MAX981
6 REF
8-Pin
DIP/SO/µMAX
GND
1
V-
2%
2
2%
16-Pin DIP/SO
THRESHOLD DETECTOR
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .
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