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MAX3084

更新时间: 2024-11-24 14:57:43
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21页 566K
描述
失效保护、高速(10Mbps)、限摆率、RS-485/RS-422收发器

MAX3084 数据手册

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MAX3080–MAX3089  
Fail-Safe, High-Speed (10Mbps),  
Slew-Rate-Limited RS-485/RS-422 Transceivers  
General Description  
Next Generation Device Features  
The MAX3080–MAX3089 high-speed transceivers for  
RS-485/RS-422 communication contain one driver and  
one receiver. These devices feature fail-safe circuitry,  
which guarantees a logic-high receiver output when the  
receiver inputs are open or shorted. This means that  
the receiver output will be a logic high if all transmitters  
on a terminated bus are disabled (high impedance).  
The MAX3080/MAX3081/MAX3082 feature reduced  
slew-rate drivers that minimize EMI and reduce reflec-  
tions caused by improperly terminated cables, allowing  
error-free data transmission up to 115kbps. The  
MAX3083/MAX3084/MAX3085 offer higher driver out-  
put slew-rate limits, allowing transmit speeds up to  
500kbps. The MAX3086/MAX3087/MAX3088’s driver  
slew rates are not limited, making transmit speeds up  
to 10Mbps possible. The MAX3089’s slew rate is  
selectable between 115kbps, 500kbps, and 10Mbps  
by driving a selector pin with a single three-state driver.  
For Fault-Tolerant Applications:  
MAX3430: 80V Fault-Protected, Fail-Safe, 1/4-  
Unit Load, +3.3V RS-485 Transceiver  
For Low-Voltage Applications:  
MAX3362: +3.3V, High-Speed, RS-485/RS-422  
Transceiver in a SOT23 Package  
For Multiple Transceiver Applications:  
MAX3030E–MAX3033E: 15kV ESD-Protected,  
+3.3V, Quad, RS-422 Transmitters  
MAX3040–MAX3045: 10kV ESD-Protected, Quad,  
+5V, RS-485/RS-422 Transmitters  
Applications  
RS-422/RS-485 Communications  
Level Translators  
These transceivers typically draw 375µA of supply  
current when unloaded, or when fully loaded with the  
drivers disabled.  
Transceivers for EMI-Sensitive Applications  
Industrial-Control Local Area Networks  
All devices have a 1/8-unit-load receiver input imped-  
ance that allows up to 256 transceivers on the bus. The  
MAX3082/MAX3085/MAX3088 are intended for half-  
duplex communications, while the MAX3080/MAX3081/  
MAX3083/MAX3084/MAX3086/MAX3087 are intended  
for full-duplex communications. The MAX3089 is selec-  
table between half-duplex and full-duplex operation. It  
also features independently programmable receiver  
and transmitter output phase via separate pins.  
Ordering Information  
PART  
TEMP RANGE  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
14 SO  
MAX3080CSD  
MAX3080CPD  
MAX3080ESD  
MAX3080EPD  
14 Plastic DIP  
14 SO  
14 Plastic DIP  
Ordering Information continued at end of data sheet.  
Selection Table  
Data  
Rate  
(Mbps)  
Slew  
Rate  
Limited  
Low-  
Power  
Shutdown  
Receiver/ Quiescent Transceivers  
Industry-  
Standard  
Pinout  
Half/Full  
Duplex  
Pin  
Count  
Part  
Driver  
Current  
(µA)  
On  
Enable  
Bus  
MAX3080  
MAX3081  
MAX3082  
MAX3083  
MAX3084  
MAX3085  
MAX3086  
MAX3087  
MAX3088  
Full  
Full  
Half  
Full  
Full  
Half  
Full  
Full  
Half  
0.115  
0.115  
0.115  
0.5  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
No  
Yes  
No  
Yes  
No  
375  
375  
375  
375  
375  
375  
375  
375  
375  
375  
256  
256  
256  
256  
256  
256  
256  
256  
256  
256  
14  
8
75180  
75179  
75176  
75180  
75179  
75176  
75180  
75179  
75176  
75180*  
Yes  
Yes  
No  
Yes  
Yes  
No  
8
14  
8
0.5  
0.5  
Yes  
Yes  
No  
Yes  
Yes  
No  
8
10  
14  
8
10  
No  
10  
No  
Yes  
Yes  
Yes  
Yes  
8
MAX3089 Selectable Selectable Selectable  
14  
*Pin-compatibith 75180, with additional features implemented using pins 1, 6, 8, and 13.  
For pricing, delivery, and ordering information, please contact Maxim Direct  
19-1138; Rev 3; 12/05  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  

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