Features: ` 11A 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
` 80A Supply Current at 1MHz Switching Frequency
` No Phase Reversal for Overdriven Inputs
` Available in Space-Saving Packages:
SOT23 (MAX985/MAX986)
MAX (MAX989/MAX990)Application·Portable/Battery-Powered Systems
·Mobile Communications
·Zero-Crossing Detectors
·Window Comparators
·Level Translators
·Threshold Detectors/
·Discriminators
·Ground/Supply Sensing
·Applications
·IR Receivers
·Digital Line ReceiversSpecificationsSupply 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 .......................10sec
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23 (derate 7.10mW/°C above +70°C)...........571mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
8-Pin MAX (derate 4.10mW/°C above +70°C) ............330mW
14-Pin SO (derate 8.33 mW/°C above +70°C)..............667mW
Operating Temperature Range ........................-40°C to +85°C
Storage Temperature Range .........................-65°C to +150°C
Lead Temperature (soldering, 10sec) ..........................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
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 voltage ranges 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. They consume only 11A of supply current while achieving a 300ns propagation delay.
The common-mode input voltage range of MAX994 extends 250mV beyond the supply rails. Input bias current is typically 1.0pA, and input offset voltage is typically 0.5mV. Internal hysteresis ensures clean output switching, even with slow-moving input signals.
The output stage's unique design of MAX994 limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The MAX985/MAX989/MAX993 have a push/pull output stage that sinks as well as sources current. Large internal output drivers allow railto- rail output swing with loads up to 8mA. The MAX986/MAX990/MAX994 have an open-drain output stage that can be pulled beyond VCC to 6V (max) above VEE. These open-drain versions are ideal for level translators and bipolar to single-ended converters.
The single MAX985/MAX986 are available in tiny 5-pin SOT23 packages.
MAX994 Data Sheet
