![](http://datasheet.mmic.net.cn/370000/MAX991EUA_datasheet_16719047/MAX991EUA_1.png)
_______________General Desc ription
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 sys-
tems. These comparators also operate with ±1.25V to
±2.75V dual supplies. They consume only 48μA per
comparator while achieving a 120ns propagation delay.
The common-mode input voltage range 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 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 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 V
CC
to 6V (max)
above V
EE
. These open-drain versions are ideal for
level translators and bipolar to single-ended converters.
The single MAX987/MAX988 are available in tiny 5-pin
SOT23 packages.
_____________________S elec tor Guide
____________________________Features
o
120ns Propagation Delay
o
48μA Quiescent Supply Current
o
+2.5V to +5.5V Single-Supply Operation
o
Common-Mode Input Voltage Range Extends
250mV Beyond the Rails
o
Push/Pull Output Stage Sinks and Sources
8mA Current (MAX987/MAX991/MAX995)
o
Open-Drain Output Voltage Extends Beyond V
CC
(MAX988/MAX992/MAX996)
o
Unique Output Stage Reduces Output Switching
Current, Minimizing Overall Power Consumption
o
100μA Supply Current at 1MHz Switching
Frequency
o
No Phase Reversal for Overdriven Inputs
o
Available in Space-Saving Packages:
5-Pin SOT23 (MAX987/MAX988)
8-Pin
μ
MAX (MAX991/MAX992)
______________Ordering Information
M
High-S peed, Mic ropower, Low-Voltage,
S OT 23, Rail-to-Rail I/O Comparators
________________________________________________________________ Maxim Integrated Products
1
V
CC
IN-
IN+
1
5
V
EE
OUT
MAX987
MAX988
SOT23
TOP VIEW
2
3
4
_________________Pin Configurations
19-1266; Rev 0b; 7/97
PART
MAX987
EUK-T
MAX987ESA
MAX988
EUK-T
MAX988ESA
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-
PACKAGE
5 SOT23-5
8 SO
5 SOT23-5
8 SO
Ordering Information continued at end of data sheet.
Typical Application Circuit appears at end of data sheet.
COMPARATORS
PER PACKAGE
OUTPUT
STAGE
MAX987
1
Push/Pull
MAX991
MAX992
MAX995
MAX996
2
2
4
4
Push/Pull
Open-Drain
Push/Pull
Open-Drain
PART
PIN-
PACKAGE
8 SO/
5 SOT23-5
8 SO/μMAX
8 SO/μMAX
14 SO
14 SO
8 SO/
5 SOT23-5
MAX988
1
Open-Drain
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Pin Configurations continued at end of data sheet.
SOT
TOP MARK
ABZB
—
ABZC
—
Portable/Battery-
Powered Systems
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators
Threshold Detectors/
Discriminators
Ground/Supply Sensing
IR Receivers
Digital Line Receivers
________________________Applic ations
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.