MAX974 General Description
The MAX971MAX974 and MAX981MAX984 single/dual/quad low-voltage comparators feature the lowest power consumption available. These micropower devices draw less than 4A supply current over temperature MAX971/MAX972/MAX981/MAX982), and include an internal 1.182V ±1% (MAX971/MAX973/MAX974) or ±2% (MAX981MAX984) 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.
MAX974 Maximum Ratings
V+ to V-, V+ to GND, GND to V-............................-0.3V, +12V
Inputs
Current: IN_+, IN_-, HYST..............................................20mA
Voltage: IN_+, IN_-, HYST ...............(V+ + 0.3V) to (V- - 0.3V)
Outputs
Current: REF....................................................................20mA
OUT_................................................................................50mA
Voltage: REF ......................................(V+ + 0.3V) to (V- - 0.3V)
OUT_ (MAX9_1/9_4)....................................12V to (GND - 0.3V)
(MAX9_2/9_3).................................................12V to (V- - 0.3V)
OUT_ Short-Circuit Duration ....................................Continuous
Continuous Power Dissipation (TA = +70°C)
8-Bump UCSP (derate 4.7mW/°C above +70°C) ........379mW
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin MAX (derate 4.1mW/°C above +70°C) ..............330mW
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C).842mW
16-Pin SO (derate 8.70mW/°C above +70°C) ..............696mW
Operating Temperature Ranges
MAX97_C_ _/MAX98_C_ _.....................................0°C to +70°C
MAX97_E_ _/MAX98_E_ _ .................................-40°C to +85°C
Storage Temperature Range ...........................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bump Temperature (soldering)
Reflow .............................................................................+235°C
MAX974 Features
Available in Ultra-Small Packages:
UCSP™ (MAX972)
MAX (MAX9_1/MAX9_2/MAX9_3)
Ultra-Low Quiescent Current (4A, max) 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 Bandgap Reference
1.182V ±1% (MAX97_)
1.182V ±2% (MAX98_)
12s Propagation Delay (10mV Overdrive)
Output Has Separate GND Pin (MAX9_1/MAX9_4)
MAX974 Typical Application
Battery-Powered Window Comparators
Systems Level Translators
Threshold Detectors Oscillator Circuits
MAX974 Connection Diagram
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