19-1266; Rev 2; 1/07
High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators
________________General Description
____________________________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 compara-
tor while achieving a 120ns propagation delay.
♦ 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
Input bias current is typically 1.0pA, and input offset volt-
age is typically 0.5mV. Internal hysteresis ensures clean
output switching, even with slow-moving input signals.
8mA Current (MAX987/MAX991/MAX995)
♦ Open-Drain Output Voltage Extends Beyond V
CC
(MAX988/MAX992/MAX996)
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 inter-
nal 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
♦ 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)
V
to 6V (max) above V . These open-drain versions
EE
CC
are ideal for level translators and bipolar to single-
ended 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® pack-
ages.
_______________Ordering Information
PKG
TOP
PART
PIN-PACKAGE
CODE
MARK
X5-1
U5-1
S8-2
MAX987EXK-T
MAX987EUK-T
MAX987ESA
5 SC70-5
5 SOT23-5
8 SO
ABM
ABZB
—
Selector Guide
COMPARATORS
PER PACKAGE
OUTPUT
STAGE
PART
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.
MAX987
MAX988
MAX991
MAX992
MAX995
MAX996
1
1
2
2
4
4
Push-Pull
Open-Drain
Push-Pull
Pin Configurations
Open-Drain
Push-Pull
TOP VIEW
Open-Drain
1
2
3
5
4
V
OUT
EE
Applications
Threshold Detectors/
Discriminators
Ground/Supply Sensing
IR Receivers
MAX987
MAX988
Portable/Battery-
Powered Systems
V
CC
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators
IN+
IN-
Digital Line Receivers
SOT23/SC70
µMAX is a registered trademark of Maxim Integrated Products,
Inc.
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.
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