19-1266; Rev 0b; 7/97
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庐 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 卤1.25V to
卤2.75V dual supplies. They consume only 48碌A 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鈥檚 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.
____________________________Features
o
120ns Propagation Delay
o
48碌A 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
100碌A 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
碌MAX
(MAX991/MAX992)
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
______________Ordering Information
PART
MAX987EUK-T
MAX987ESA
MAX988EUK-T
MAX988ESA
TEMP. RANGE
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
PIN-
PACKAGE
5 SOT23-5
8 SO
5 SOT23-5
8 SO
SOT
TOP MARK
ABZB
鈥?/div>
ABZC
鈥?/div>
_____________________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
PIN-
PACKAGE
8 SO/
5 SOT23-5
8 SO/
5 SOT23-5
8 SO/碌MAX
8 SO/碌MAX
14 SO
14 SO
Ordering Information continued at end of data sheet.
Typical Application Circuit appears at end of data sheet.
_________________Pin Configurations
TOP VIEW
OUT
1
5
V
EE
________________________Applications
Portable/Battery-
Powered Systems
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators
Threshold Detectors/
Discriminators
Ground/Supply Sensing
IR Receivers
Digital Line Receivers
V
CC
2
MAX987
MAX988
4
IN-
IN+
3
SOT23
Pin Configurations continued at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
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________________________________________________________________
Maxim Integrated Products
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.
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