Document
19-1266; Rev 2; 1/07
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
________________General Description
The MAX987/MAX988/MAX991/MAX992/MAX995/ MAX996 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 48µA per comparator while achieving a 120ns propagation delay.
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 limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX987/MAX991/MAX995 have a push-pull output stage that sinks as well as sources current. Large internal output drivers allow rail-to-rail output swing with loads up to 8mA. The MAX988/MAX992/MAX996 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 singleended converters.
The single MAX987/MAX988 are available in tiny 5-pin SC70 packages, while the dual MAX991/MAX992 are available in ultra-small 8-pin SOT23 and µMAX® packages.
Selector Guide
PART
MAX987 MAX988 MAX991 MAX992 MAX995 MAX996
COMPARATORS PER PACKAGE
1 1 2 2 4 4
OUTPUT STAGE
Push-Pull Open-Drain
Push-Pull Open-Drain
Push-Pull Open-Drain
____________________________Features
♦ 120ns Propagation Delay
♦ 48µA Quiescent Supply Current
♦ +2.5V to +5.5V Single-Supply Operation
♦ Common-Mode Input Voltage Range Extends 250mV Beyond the Rails
♦ Push-Pull Output Stage Sinks and Sources 8mA Current (MAX987/MAX991/MAX995)
♦ Open-Drain Output Voltage Extends Beyond VCC (MAX988/MAX992/MAX996)
♦ Unique Output Stage Reduces Output Switching Current, Minimizing Overall Power Consumption
♦ 100µA Supply Current at 1MHz Switching Frequency
♦ No Phase Reversal for Overdriven Inputs
♦ Available in Space-Saving Packages: 5-Pin SOT23 (MAX987/MAX988) 8-Pin µMAX (MAX991/MAX992)
_______________Ordering Information
PART
PIN-PACKAGE
PKG CODE
TOP MARK
MAX987EXK-T 5 SC70-5
X5-1
ABM
MAX987EUK-T 5 SOT23-5
U5-1
ABZB
MAX987ESA
8 SO
S8-2
—
Ordering Information continued at end of data sheet.
Note: All devices specified over the -40°C to +85°C operating temperature range.
Typical Application Circuit appears at end of data sheet.
Pin Configurations
TOP VIEW
Applications
Portable/BatteryPowered Systems
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators
Threshold Detectors/ Discriminators
Ground/Supply Sensing
IR Receivers
Digital Line Receivers
µMAX is a registered trademark of Maxim Integrated Products, Inc.
OUT 1 VCC 2
MAX987 MAX988
5 VEE
IN+ 3
4 IN-
SOT23/SC70 Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ...................................................6V IN_-, IN_+ to VEE .......................................-0.3V to (VCC + 0.3V) Current into Input Pins .....................................................±20mA
OUT_ to VEE MAX987/MAX991/MAX995 ....................-0.3V to (VCC + 0.3V) MAX988/MAX992/MAX996 ..................................-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 8-Pin SOT23 (derate 9.1mW/°C above +70°C).............727mW 8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW 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 Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+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.
ELECTRICAL CHARACTE.