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MAX974

更新时间： 2024-11-20 14:58:03
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亚德诺 - ADI 比较器
页数 文件大小 规格书
17页 325K
描述
超低功耗、漏极开路输出、单/双电源比较器

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MAX974 数据手册

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19-0450; Rev 3; 2/03  
Ultra-Low-Power, Open-Drain,  
Single/Dual-Supply Comparators  
General Description  
Features  
The MAX971–MAX974 and MAX981–MAX984 single/  
dual/quad low-voltage comparators feature the lowest  
power consumption available. These micropower  
devices draw less than 4µA supply current over  
temperature (MAX971/MAX972/MAX981/MAX982), and  
include an internal 1.182V 1ꢀ (MAX971/MAX97ꢁ/  
MAX974) or 2ꢀ (MAX981–MAX984) voltage reference  
and programmable hysteresis.  
ꢀ Available in Ultra-Small Packages:  
UCSP™ (MAX972)  
µMAX (MAX9_1/MAX9_2/MAX9_3)  
ꢀ Ultra-Low Quiescent Current (4µA, max)  
Over Extended Temp Range (MAX971/MAX981)  
ꢀ Power Supplies:  
Single 2.5V to 11V  
Dual 1.25V to 5.5V  
Ideal for ꢁV or 5V single-supply applications, these  
devices operate from a single 2.5V to 11V supply (or  
1.25V to 5.5V dual supplies), and each comparatorꢂs  
input voltage ranges from the negative supply rail to within  
1.ꢁV of the positive supply.  
ꢀ Input Voltage Range Includes Negative Supply  
ꢀ Internal Bandgap Reference  
1.182V 1% (MAX97_)  
1.182V 2% (MAX98_)  
The single MAX971/MAX981 and the dual MAX97ꢁ/  
MAX982/MAX98ꢁ provide a unique, simple method for  
adding hysteresis without feedback or complicated  
equations, simply by using the HYST pin plus two  
resistors.  
ꢀ 12µs Propagation Delay (10mV Overdrive)  
ꢀ Output Has Separate GND Pin (MAX9_1/MAX9_4)  
Applications  
Battery-Powered  
Systems  
Window Comparators  
Level Translators  
The MAX971–MAX974 and MAX981–MAX984ꢂs open-  
drain outputs permit wire-ORed configurations. Thanks to  
an 11V output range and separate GND pin for the output  
transistor (MAX971/MAX974, MAX981/MAX984), these  
devices are ideal for level translators and bipolar to single-  
ended converters. For similar devices with complementary  
output stages, see the MAX921–MAX924 (1ꢀ reference)  
and the MAX9ꢁ1–MAX9ꢁ4 (2ꢀ reference).  
Threshold Detectors  
Oscillator Circuits  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
8 Plastic Dip  
8 SO  
MAX971CPA  
MAX971CSA  
MAX971CUA  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
8 µMAX  
Ordering Information continued at end of data sheet.  
Typical Operating Circuit  
V
IN  
8-Pin  
DIP/SO/µMAX  
MAX971  
MAX972  
MAX97ꢁ  
MAX974  
MAX981  
MAX982  
MAX98ꢁ  
MAX984  
1ꢀ  
None  
1ꢀ  
1
2
2
4
1
2
2
4
Yes  
No  
7
V+  
8-Pin UCSP/  
DIP/SO/µMAX  
3
IN+  
8-Pin  
DIP/SO/µMAX  
OUT 8  
Yes  
No  
4 IN-  
1ꢀ  
16-Pin DIP/SO  
HYST  
5
8-Pin  
DIP/SO/µMAX  
2ꢀ  
Yes  
Yes  
Yes  
No  
MAX971  
MAX981  
6 REF  
8-Pin  
DIP/SO/µMAX  
2ꢀ  
GND  
1
V-  
2
8-Pin  
DIP/SO/µMAX  
2ꢀ  
THRESHOLD DETECTOR  
UCSP is a trademark of Maxim Integrated Products, Inc.  
2ꢀ  
16-Pin DIP/SO  
________________________________________________________________________________________  
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.  
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