Rainbow Electronics MAX984 - Manual

_______________General Description
The MAX971–MAX974 and MAX981–MAX984 single/
dual/quad low-voltage comparators feature the lowest
power consumption available. These micropower
devices draw less than 4µA supply current over
temperature (MAX971/MAX972, MAX981/MAX982), and
include an internal 1.182V ±1% (MAX971/MAX973/
MAX974) or ±2% (MAX981–MAX984) voltage reference
and programmable hysteresis.
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.
The single MAX971 and MAX981 and the dual MAX973
and MAX982/MAX983 provide a unique, simple method
for adding hysteresis without feedback or complicated
equations, simply by using the HYST pin plus two
resistors.
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).
____________________________Features
♦ 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
♦ 12µs Propagation Delay (10mV Overdrive)
♦ Output Has Separate GND Pin (MAX9_1/MAX9_4)
________________________Applications
Battery-Powered Systems Level Translators
Threshold Detectors Oscillator Circuits
Window Comparators
MAX971–MAX974/MAX981–MAX984
Ultra-Low-Power, Open-Drain,
Single/Dual-Supply Comparators
________________________________________________________________ Maxim Integrated Products 1
MAX971
MAX981
OUT
IN+
HYST
REF
V- GND
V+
2 1
4
5
6
8
3
7
IN-
THRESHOLD DETECTOR
V IN
__________Typical Operating Circuit
Call toll free 1-800-998-8800 for free samples or literature.
19-0450; Rev 0; 11/95
PART TEMP. RANGE PIN-PACKAGE
MAX971 CPA 0°C to +70°C 8 Plastic DIP
MAX971CSA 0°C to +70°C 8 SO
MAX971C/D 0°C to +70°C Dice*
MAX971CUA 0°C to +70°C 8 µMAX
______________Ordering Information
Ordering Information continued at end of data sheet.
* Dice are tested at T A = +25°C, DC parameters only.
PART INTERNAL PRECISION REFERENCE INTERNAL HYSTERESIS PACKAGE
MAX971 1% Yes
8-Pin
DIP/SO/µMAX
MAX972 None No
8-Pin
DIP/SO/µMAX
MAX973 1% Yes
8-Pin
DIP/SO/µMAX
MAX974 1% No 16-Pin DIP/SO
MAX981 2% Yes
8-Pin
DIP/SO/µMAX
MAX982 2% Yes
8-Pin
DIP/SO/µMAX
MAX983 2% Yes
8-Pin
DIP/SO/µMAX
MAX984 2% No 16-Pin DIP/SO
COMPARATORS PER PACKAGE
1
2
2
4
1
2
2
4