19-1266; Rev 0b; 7/97
Hig h -S p e e d , Mic ro p o w e r, Lo w -Vo lt a g e ,
S OT2 3 , Ra il-t o -Ra il I/O Co m p a ra t o rs
78125/MAX96
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ 120ns Propagation Delay
The MAX987/MAX988/MAX991/MAX992/MAX995/
MAX996 single/dual/quad micropower comparators
♦ 48µA Quiescent Supply Current
®
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.
♦ +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
The common-mode input voltage range extends 250mV
beyond the supply rails. Input bias current is typically
1.0p A, a nd inp ut offs e t volta g e is typ ic a lly 0.5mV.
Inte rna l hyste re sis e nsure s c le a n output switc hing ,
even with slow-moving input signals.
8mA Current (MAX987/MAX991/MAX995)
♦ Open-Drain Output Voltage Extends Beyond V
CC
(MAX988/MAX992/MAX996)
♦ Unique Output Stage Reduces Output Switching
The output stage’s unique design limits supply-current
surges while switching, virtually eliminating the supply
glitches typical of many other comparators. This design
a ls o minimize s ove ra ll p owe r c ons ump tion und e r
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-ra il outp ut s wing with loa d s up to 8mA. The
MAX988/MAX992/MAX996 have an open-drain output
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)
s ta g e tha t c a n b e p ulle d b e yond V
to 6V (ma x)
CC
______________Ord e rin g In fo rm a t io n
above V . These open-drain versions are ideal for
EE
level translators and bipolar to single-ended converters.
PIN-
SOT
PART
TEMP. RANGE
The single MAX987/MAX988 are available in tiny 5-pin
SOT23 packages.
PACKAGE TOP MARK
MAX987EUK-T -40°C to +85°C 5 SOT23-5
MAX987ESA -40°C to +85°C 8 SO
MAX988EUK-T -40°C to +85°C 5 SOT23-5
MAX988ESA -40°C to +85°C 8 SO
ABZB
—
_____________________S e le c t o r Gu id e
ABZC
—
COMPARATORS
PER PACKAGE
OUTPUT
STAGE
PIN-
PACKAGE
PART
Ordering Information continued at end of data sheet.
Typical Application Circuit appears at end of data sheet.
8 SO/
5 SOT23-5
MAX987
MAX988
1
1
Push/Pull
8 SO/
5 SOT23-5
_________________P in Co n fig u ra t io n s
Open-Drain
MAX991
MAX992
MAX995
MAX996
2
2
4
4
Push/Pull
Open-Drain
Push/Pull
8 SO/µMAX
8 SO/µMAX
14 SO
TOP VIEW
1
2
3
5
4
V
OUT
EE
Open-Drain
14 SO
MAX987
MAX988
V
CC
________________________Ap p lic a t io n s
Portable/Battery-
Powered Systems
Threshold Detectors/
Discriminators
IN+
IN-
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators
Ground/Supply Sensing
IR Receivers
SOT23
Pin Configurations continued at end of data sheet.
Digital Line Receivers
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
________________________________________________________________ Maxim Integrated Products
1
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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