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ADM3491AR-REEL7 参数 Datasheet PDF下载

ADM3491AR-REEL7图片预览
型号: ADM3491AR-REEL7
PDF下载: 下载PDF文件 查看货源
内容描述: 3.3 V摆率限制,半双工和全双工, RS - 485 / RS -422收发器 [3.3 V Slew Rate Limited, Half- and Full-Duplex, RS-485/RS-422 Transceivers]
分类和应用:
文件页数/大小: 20 页 / 460 K
品牌: ADI [ ADI ]
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ADM3483/ADM3485/ADM3488/ADM3490/ADM3491  
LINE LENGTH VS. DATA RATE  
The RS-485 and RS-422 standards cover line lengths up to 4000 feet. For line lengths greater than 4000 feet, see Figure 36.  
MAXIMUM NUMBER OF TRANSCEIVERS ON BUS = 32  
ADM3483/  
ADM3485  
ADM3483/  
ADM3485  
V
CC  
R1  
R
R
RO  
RE  
DE  
DI  
RO  
RE  
DE  
DI  
A
A
R
R
T
T
B
B
D
D
R2  
A
B
A
B
ADM3483/  
ADM3485  
ADM3483/  
ADM3485  
R
R
D
D
RO RE DE DI  
RO RE DE DI  
NOTES  
1. R IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE.  
T
Figure 32. ADM3483/ADM3485 Typical Half-Duplex RS-485 Network  
MAXIMUM NUMBER OF NODES = 32  
V
T
CC  
R1  
MASTER  
R
SLAVE  
D
A
B
Z
Y
Z
RO  
RE  
DE  
DI  
DI  
R
R
T
DE  
RE  
RO  
V
CC  
R1  
R
R2  
B
A
R
T
T
D
R
Y
R2  
ADM3491  
ADM3491  
A
B
Z
Y
A
B
Z
Y
SLAVE  
SLAVE  
R
R
D
D
ADM3491  
ADM3491  
RO RE DE DI  
RO RE DE DI  
NOTES  
1. R IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE.  
T
Figure 33. ADM3491 Typical Full-Duplex RS-485 Network  
Rev. B | Page 15 of 20