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MAX3471EUA-T PDF预览

MAX3471EUA-T

更新时间: 2024-02-07 12:35:53
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美信 - MAXIM 电池
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8页 88K
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MAX3471EUA-T 数据手册

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19-0497; Rev 0; 2/98  
1.6µA, RS-485/RS-422, Ha lf-Duple x,  
Diffe re ntia l Tra ns c e ive r for Ba tte ry-Pow e re d Sys te m s  
MAX3471  
________________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
1.6µA Supply Current with Receiver Enabled  
+2.5V to +5.5V Single-Supply Operation  
True Fail-Safe Receiver Input  
The MAX3471 half-duplex transceiver is intended for  
lithium battery-powered RS-485/RS-422 applications. It  
draws only 1.6µA (typical) supply current from a 3.6V  
supply with the receiver enabled and the driver dis-  
abled. Its wide 2.5V to 5.5V supply voltage guarantees  
operation over the lifetime of a lithium battery.  
Available in µMAX Package  
This device features true fail-safe operation that guar-  
antees a logic-high receiver output when the receiver  
inputs are open or shorted. This means that the receiv-  
er output will be a logic high if all transmitters on a ter-  
mina te d b us a re d is a b le d (hig h imp e d a nc e ). The  
MAX3471 has a 1/8-unit load input resistance. When  
1/8-Unit-Load Receiver Input  
-7V to +10V Common-Mode Input Voltage Range  
_______________Ord e rin g In fo rm a t io n  
driver outputs are enabled and pulled above V  
below GND, internal circuitry prevents battery back-  
charging.  
or  
CC  
PART  
TEMP. RANGE  
0°C to +70°C  
PIN-PACKAGE  
8 µMAX  
MAX3471CUA  
MAX3471EUA  
-40°C to +85°C  
8 µMAX  
The MAX3471 is available in an 8-pin µMAX package.  
________________________Ap p lic a t io n s  
___________________P in Co n fig u ra t io n  
Remote Meter Reading  
TOP VIEW  
Battery-Powered Differential Communications  
Level Translators  
RO  
RE  
DE  
DI  
1
2
3
4
8
7
6
5
V
CC  
B
MAX3471  
A
GND  
µMAX  
Typ ic a l Ap p lic a t io n Circ u it  
V
CC  
V
CC  
V
CC  
0.1µF  
B
A
B
A
DI  
DE  
DI  
D
D
DE  
B
A
B
A
RO  
RE  
R
R
RO  
RE  
V
CC  
GND  
V
CC  
GND  
GND  
REMOTE UNIT  
R
R
D
D
CENTRAL UNIT  
DI  
DE  
DI  
DE  
RO RE  
RO RE  
MAX3471  
REMOTE UNIT  
REMOTE UNIT  
TYPICAL HALF-DUPLEX RS-485 NETWORK  
________________________________________________________________ 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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