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SN65HVD485E

更新时间： 2024-11-16 22:42:55
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德州仪器 - TI /
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15页 335K
描述
HALF-DUPLEX RS-485 TRANSCEIVER

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SN65HVD485E 数据手册

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DGK  
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www.ti.com  
SLLS612 − JUNE 2004  
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FEATURES  
DESCRIPTION  
The SN65HVD485E is a half-duplex transceiver designed  
for RS-485 data bus networks. Powered by a 5-V supply,  
it is fully compliant with the TIA/EIA-485A standard. This  
device is suitable for data transmission up to 10 Mbps over  
long twisted-pair cables and is designed to operate with  
very low supply current, typically less than 2 mA, exclusive  
of the load. When in the inactive shutdown mode, the  
supply current drops below 1 mA.  
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Bus-Pin ESD Protection Up to 15 kV  
1/2 Unit Load—Up to 64 Nodes on a Bus  
Bus Open Failsafe Receiver  
Available in Small MSOP-8 Package  
Meets or Exceeds the Requirements of the  
TIA/EIA−485A Standard  
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Industry-Standard SN75176 Footprint  
The wide common-mode range and high ESD protection  
levels of this device make it suitable for demanding  
applications such as, electrical inverters, status/command  
signals across telecom racks, cabled chassis  
interconnects, and industrial automation networks where  
noise tolerance is essential. The SN65HVD485E matches  
the industry-standard footprint of the SN75176. Power-on  
reset circuits keep the outputs in a high-impedence state  
until the supply voltage has stabilized. A thermal shutdown  
function protects the device from damage due to system  
fault conditions. The SN65HVD485E is characterized for  
operation from −40°C to 85°C air temperature.  
APPLICATIONS  
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Motor Control  
Power Inverters  
Industrial Automation  
Building Automation Networks  
Industrial Process Control  
Battery-Powered Applications  
Telecommunications Equipment  
Improved Replacement for:  
PART NUMBER REPLACE WITH  
ADM485  
HVD485E: Better ESD protection ( 15 kV vs. unspecified)  
Faster signaling rate (10 Mbps vs. 5 Mbps)  
More nodes on a bus (64 vs. 32)  
Wider power supply tolerance (10% vs. 5%)  
SP485E  
HVD485E: More nodes on a bus (64 vs. 32)  
Wider power supply tolerance (10% vs. 5%)  
LMS485E  
HVD485E: Higher signaling rate (10 Mbps vs. 2.5 Mbps)  
More nodes on a bus (64 vs. 32)  
Wider power supply tolerance (10% vs. 5%)  
DS485  
HVD485E: Higher signaling rate (10 Mbps vs. 2.5 Mbps)  
Better ESD ( 15 kV vs. 2 kV)  
More nodes on a bus (64 vs. 32)  
Wider power supply tolerance (10% vs. 5%)  
LTC485  
HVD485E: Better ESD ( 15 kV vs. 2 kV)  
Wider power supply tolerance (10% vs. 5%)  
MAX485E  
HVD485E: Higher signaling rate (10 Mbps vs. 2.5 Mbps)  
More nodes on a bus (64 vs. 32)  
Wider power supply tolerance (10% vs. 5%)  
ST485E  
HVD485E: Higher signaling rate (10 Mbps vs. 5 Mbps)  
Wider power supply tolerance (10% vs. 5%)  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
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ꢟ ꢙꢗ ꢘꢙꢚ ꢛ ꢝꢙ ꢞ ꢢꢡ ꢟ ꢖ ꢘꢖ ꢟ ꢜ ꢝꢖ ꢙꢗꢞ ꢢ ꢡꢚ ꢝꢧꢡ ꢝꢡ ꢚ ꢛꢞ ꢙꢘ ꢒꢡꢨ ꢜꢞ ꢔꢗꢞ ꢝꢚ ꢠꢛ ꢡꢗꢝ ꢞ ꢞꢝ ꢜꢗꢥ ꢜꢚ ꢥ ꢩ ꢜꢚ ꢚ ꢜ ꢗꢝꢪꢦ  
ꢏꢚ ꢙ ꢥꢠꢟ ꢝ ꢖꢙ ꢗ ꢢꢚ ꢙ ꢟ ꢡ ꢞ ꢞ ꢖꢗ ꢫ ꢥꢙ ꢡ ꢞ ꢗꢙꢝ ꢗꢡ ꢟꢡ ꢞꢞ ꢜꢚ ꢖꢤ ꢪ ꢖꢗꢟ ꢤꢠꢥ ꢡ ꢝꢡ ꢞꢝꢖ ꢗꢫ ꢙꢘ ꢜꢤ ꢤ ꢢꢜ ꢚ ꢜꢛ ꢡꢝꢡ ꢚ ꢞꢦ  
Copyright 2004, Texas Instruments Incorporated  
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