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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX987 Datasheet

High-Speed / Micropower / Low-Voltage / SOT23 / Rail-to-Rail I/O Comparators

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MAX987 pdf
19-1266; Rev 2; 1/07
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 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.
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.
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
VCC to 6V (max) above VEE. 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
SC70 packages, while the dual MAX991/MAX992 are
available in ultra-small 8-pin SOT23 and µMAX® pack-
ages.
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
____________________________Features
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
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
MAX987ESA
8 SO
S8-2
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.
Pin Configurations
TOP VIEW
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
µMAX is a registered trademark of Maxim Integrated Products,
Inc.
OUT 1
VCC 2
MAX987
MAX988
5 VEE
IN+ 3
4 IN-
SOT23/SC70
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX987 Datasheet

High-Speed / Micropower / Low-Voltage / SOT23 / Rail-to-Rail I/O Comparators

No Preview Available !

MAX987 pdf
High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ...................................................6V
IN_-, IN_+ to VEE .......................................-0.3V to (VCC + 0.3V)
Current into Input Pins .....................................................±20mA
OUT_ to VEE
MAX987/MAX991/MAX995 ....................-0.3V to (VCC + 0.3V)
MAX988/MAX992/MAX996 ..................................-0.3V to +6V
OUT_ Short-Circuit Duration to VEE or VCC ...........................10s
Continuous Power Dissipation (TA = +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C) ...............247mW
5-Pin SOT23 (derate 7.10mW/°C above +70°C)...........571mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C).............727mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ..........727mW
14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS (Note 1)
(VCC = +2.7V to +5.5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Supply Voltage
Supply Current per
Comparator
Power-Supply Rejection Ratio
SYMBOL
VCC
ICC
PSRR
CONDITIONS
Inferred from PSRR test
VCC = 5V
TA = +25°C
TA = -40°C to +85°C
VCC = 2.7V
TA = +25°C
TA = -40°C to +85°C
2.5V VCC 5.5V
Common-Mode Voltage
Range (Note 2)
Input Offset Voltage
(Note 3)
Input Hysteresis
Input Bias Current
(Note 4)
VCMR
VOS
VHYST
IB
TA = +25°C
TA = -40°C to +85°C
Full common-mode
range
TA = +25°C
TA = -40°C to +85°C
MIN
2.5
55
VEE -
0.25
VEE
TYP
53
48
80
±0.5
±2.5
MAX
5.5
80
96
80
96
VCC +
0.25
VCC
±5
±7
UNITS
V
µA
dB
V
mV
mV
0.001 10
nA
Input Offset Current
Input Capacitance
Common-Mode Rejection Ratio
IOS
CIN
CMRR
0.5
1.0
50 80
pA
pF
dB
Output Leakage Current
(MAX988/MAX992/
MAX996 only)
ILEAK VOUT = high
1.0 µA
Output Short-Circuit Current
OUT Output-Voltage Low
OUT Output-Voltage High
(MAX987/MAX991/
MAX995 Only)
ISC
VOL
VOH
Sourcing or sinking,
VOUT = VEE or VCC
VCC = 5V
VCC = 2.7V
VCC = 5V,
ISINK = 8mA
TA = +25°C
TA = -40°C to +85°C
VCC = 2.7V,
ISINK = 3.5mA
TA = +25°C
TA = -40°C to +85°C
VCC = 5V,
ISOURCE = 8mA
TA = +25°C
TA = -40°C to +85°C
VCC = 2.7V,
TA = +25°C
ISOURCE = 3.5mA TA = -40°C to +85°C
95
35
0.2
0.15
4.6 4.85
4.45
2.4 2.55
2.3
0.4
0.55
0.3
0.4
mA
V
V
2 _______________________________________________________________________________________


Part Number MAX987
Description High-Speed / Micropower / Low-Voltage / SOT23 / Rail-to-Rail I/O Comparators
Maker Maxim
Total Page 13 Pages
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