Features: 11µA Quiescent Supply Current
2.5V to 5.5V Single-Supply Operation
Common-Mode Input Voltage Range Extends
250mV Beyond the Rails
300ns Propagation Delay
Push-Pull Output Stage Sinks and Sources
8mA Current (MAX985/MAX989/MAX993)
Open-Drain Output Voltage Extends Beyond VCC
(MAX986/MAX990/MAX994)
Unique Output Stage Reduces Output Switching
Current, Minimizing Overall Power Consumption
80µA Supply Current at 1MHz Switching
Frequency
No Phase Reversal for Overdriven Inputs
Available in Space-Saving Packages:
UCSP (MAX985)
SOT23 (MAX985/MAX986/MAX989/MAX990)
µMAX (MAX989/MAX990)ApplicationPortable/Battery- Threshold Detectors/
Powered Systems Discriminators
Mobile Communications Ground/Supply-Sensing
Zero-Crossing Detectors Applications
Window Comparators IR Receivers
Level Translators Digital Line Receivers
Pinout
SpecificationsSupply Voltage (VCC to VEE) ..................................................6V
IN_-, IN_+ to VEE........................................-0.3V to (VCC+ 0.3V)
OUT_ to VEE
MAX985/MAX989/MAX993............................-0.3V to (VCC+ 0.3V)
MAX986/MAX990/MAX994..........................................-0.3V to 6V
OUT_ Short-Circuit Duration to VEE or VCC.............................10s
Continuous Power Dissipation (TA= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)..................247mW
5-Pin SOT23 (derate 7.10mW/°C above +70°C)..............571mW
6-Bump UCSP (derate 3.9mW/°C above +70°C)..............308mW
8-Pin SOT23 (derate 9.1mW/ above +70°C).................727mW
8-Pin µMAX (derate 4.5mW/°C above +70°C)..................362mW
8-Pin SO (derate 5.88mW/°C above +70°C)....................471mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C)..............727mW
14-Pin SO (derate 8.33mW/°C above +70°C)..................667mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Bump Reflow Temperature (Note 1).................................+235°C
DescriptionThe MAX985/MAX986/MAX989/MAX990/MAX993/ MAX994 single/dual/quad micropower comparators feature low-voltage operation and Rail-to-Rail®inputs and outputs. Their operating voltages range from 2.5V to 5.5V, making them ideal for both 3V and 5V systems. These comparators also operate with ±1.25V to ±2.75V dual supplies. MAX989 consume only 11µA of supply cur- rent while achieving a 300ns propagation delay. Input bias current is typically 1.0pA, and input offset voltage is typically 0.5mV. Internal hysteresis of MAX989 ensures clean output switching, even with slow-moving input signals.
The output stage's unique design of MAX989 limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX985/MAX989/MAX993 have a push-pull output stage that sinks as well as sources current. Large inter- nal output drivers allow rail-to-rail output swing with loads up to 8mA. The MAX986/MAX990/MAX994 have an open-drain output stage that can be pulled beyondVCC to 6V (max) above VEE. These open-drain versionsare ideal for level translators and bipolar to single-ended converters.
The single MAX985 is available in a chip-scale pack-age (UCSP™), significantly reducing the required PC board area. The single MAX985/MAX986 are availablein 5-pin SC70 packages and the dual MAX989/MAX990are available in 8-pin SOT23 packages.
MAX989 Data Sheet
