19-1266; Rev 2; 1/07
High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators
____________________________Features
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.
♦ 120ns Propagation Delay
Selector Guide
PART
COMPARATORS
PER PACKAGE
OUTPUT
STAGE
MAX987
1
Push-Pull
MAX988
1
Open-Drain
MAX991
2
2
4
4
Open-Drain
♦ 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
S8-2
MAX987ESA
8 SO
—
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.
Push-Pull
MAX996
♦ Common-Mode Input Voltage Range Extends
250mV Beyond the Rails
Open-Drain
MAX995
♦ +2.5V to +5.5V Single-Supply Operation
Push-Pull
MAX992
♦ 48µA Quiescent Supply Current
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.
Pin Configurations
TOP VIEW
OUT 1
VCC 2
5
VEE
4
IN-
MAX987
MAX988
IN+ 3
SOT23/SC70
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
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.
1
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
________________General Description
