參數(shù)資料
型號(hào)： MAX985-MAX994
廠商： Maxim Integrated Products, Inc.
英文描述： Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
中文描述： 微功耗，低電壓，SOT23封裝，軌至軌I / O比較
文件頁(yè)數(shù)： 1/13頁(yè)
文件大?。?/td> 453K
代理商： MAX985-MAX994
General Description
The MAX985/MAX986/MAX989/MAX990/MAX993/
MAX994 single/dual/quad micropower comparators
feature low-voltage operation and Rail-to-Rail inputs
and outputs. Their operating voltages range 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 11μA of supply cur-
rent while achieving a 300ns propagation delay.
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. The
MAX985/MAX989/MAX993 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 MAX986/MAX990/MAX994 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 MAX985 is available in a chip-scale pack-
age (UCSP), significantly reducing the required PC
board area. The single MAX985/MAX986 are available
in 5-pin SC70 packages and the dual MAX989/MAX990
are available in 8-pin SOT23 packages.
____________________________Features
o
11μA Quiescent Supply Current
o
2.5V to 5.5V Single-Supply Operation
o
Common-Mode Input Voltage Range Extends
250mV Beyond the Rails
o
300ns Propagation Delay
o
Push-Pull Output Stage Sinks and Sources
8mA Current (MAX985/MAX989/MAX993)
o
Open-Drain Output Voltage Extends Beyond V
CC
(MAX986/MAX990/MAX994)
o
Unique Output Stage Reduces Output Switching
Current, Minimizing Overall Power Consumption
o
80μA Supply Current at 1MHz Switching
Frequency
o
No Phase Reversal for Overdriven Inputs
o
Available in Space-Saving Packages:
UCSP (MAX985)
SOT23 (MAX985/MAX986/MAX989/MAX990)
μMAX (MAX989/MAX990)
Ordering Information
M
Micropower, Low-Voltage, UCSP/SC70,
Rail-to-Rail I/O Comparators
________________________________________________________________
Maxim Integrated Products
1
TOP VIEW
(BUMPS ON BOTTOM)
UCSP
MAX985
B1
B2
B3
A1
A2
A3
IN+
IN-
N.C.
V
EE
OUT
V
CC
Pin Configurations
19-1229; Rev 3; 9/02
Ordering Information continued at end of data sheet.
Typical Application Circuit appears at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Pin Configurations continued at end of data sheet.
Portable/Battery-
Powered Systems
Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators
Threshold Detectors/
Discriminators
Ground/Supply-Sensing
Applications
IR Receivers
Digital Line Receivers
PART
TEMP RANGE
PIN/BUMP-
PACKAGE
TOP
MARK
MAX985
EBT-T*
MAX985EXK-T
*
UCSP reliability is integrally linked to the user’s assembly meth-
ods, circuit board material, and environment. Refer to the UCSP
Reliability section of this data sheet for more information.
-40
°
C to +85
°
C
-40
°
C to +85
°
C
6 UCSP-6
5 SC70-5
AAY
ABK
Applications
Selector Guide
PART
COMPARATORS
PER PACKAGE
OUTPUT
STAGE
MAX985
MAX986
MAX989
MAX990
MAX993
MAX994
1
1
2
2
4
4
Push-Pull
Open-Drain
Push-Pull
Open-Drain
Push-Pull
Open-Drain
UCSP is a trademark of Maxim Integrated Products, Inc.
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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