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ISL83078E

更新时间： 2024-11-26 22:36:03
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英特矽尔 - INTERSIL /
页数 文件大小 规格书
18页 803K
描述
+-15kV ESD Protected, 3.3V, Full Fail-safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers

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ISL83078E 数据手册

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ISL83070E, ISL83071E, ISL83072E, ISL83073E,  
®
ISL83075E, ISL83076E, ISL83077E, ISL83078E  
Data Sheet  
August 5, 2005  
FN6115.1  
±15kV ESD Protected, 3.3V, Full Fail-s afe,  
Low Power, High Speed or Slew Rate  
Limited, RS-485/RS-422 Trans ceivers  
Features  
• Pb-Free Plus Anneal (RoHS Compliant)  
• RS-485 I/O Pin ESD Protection . . . . . . . . . . ±15kV HBM  
The Intersil ISL8307XE are BiCMOS 3.3V powered, single  
transceivers that meet both the RS-485 and RS-422  
standards for balanced communication. These devices have  
very low bus currents (+125µA/-100µA), so they present a  
true “1/8 unit load” to the RS-485 bus. This allows up to 256  
transceivers on the network without violating the RS-485  
specification’s 32 unit load maximum, and without using  
repeaters. For example, in a remote utility meter reading  
system, individual meter readings are routed to a concentrator  
via an RS-485 network, so the high allowed node count  
minimizes the number of repeaters required.  
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM  
• Full Fail-safe (Open, Short, Terminated/Floating)  
Receivers  
• Hot Plug - Tx and Rx Outputs Remain Three-state During  
Power-up  
• True 1/8 Unit Load Allows up to 256 Devices on the Bus  
• Single 3.3V Supply  
• High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 20Mbps  
• Low Quiescent Supply Current . . . . . . . . . . 800µA (Max)  
- Ultra Low Shutdown Supply Current . . . . . . . . . . 10nA  
Receiver (Rx) inputs feature a “Full Fail-Safe” design, which  
ensures a logic high Rx output if Rx inputs are floating,  
shorted, or terminated but undriven.  
• -7V to +12V Common Mode Input/Output Voltage Range  
• Half and Full Duplex Pinouts  
Hot Plug circuitry ensures that the Tx and Rx outputs remain  
in a high impedance state while the power supply stabilizes.  
• Three State Rx and Tx Outputs Available  
The ISL83070E through ISL83075E utilize slew rate limited  
drivers which reduce EMI, and minimize reflections from  
improperly terminated transmission lines, or unterminated  
stubs in multidrop and multipoint applications. Slew rate limited  
versions also include receiver input filtering to enhance noise  
immunity in the presence of slow input signals.  
• Current Limiting and Thermal Shutdown for driver  
Overload Protection  
• Tiny MSOP package offering saves 50% board space  
Applications  
• Automated Utility Meter Reading Systems  
The ISL83070E, ISL83071E, ISL83073E, ISL83076E,  
ISL83077E are configured for full duplex (separate Rx input  
and Tx output pins) applications. The half duplex versions  
multiplex the Rx inputs and Tx outputs to allow transceivers  
with output disable functions in 8 lead packages.  
• High Node Count Systems  
• Field Bus Networks  
• Security Camera Networks  
• Building Environmental Control/ Lighting Systems  
• Industrial/Process Control Networks  
TABLE 1. SUMMARY OF FEATURES  
PART  
NUMBER  
HALF/FULL DATARATE SLEW-RATE  
HOT  
PLUG?  
#DEVICES  
ON BUS  
RX / TX  
ENABLE?  
QUIESCENT  
(µA)  
LOW POWER  
SHUTDOWN? COUNT  
PIN  
DUPLEX  
FULL  
FULL  
HALF  
FULL  
HALF  
FULL  
FULL  
HALF  
(Mbps)  
0.25  
0.25  
0.25  
0.5  
LIMITED?  
YES  
YES  
YES  
YES  
YES  
NO  
I
CC  
510  
ISL83070E  
ISL83071E  
ISL83072E  
ISL83073E  
ISL83075E  
ISL83076E  
ISL83077E  
ISL83078E  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
256  
256  
256  
256  
256  
256  
256  
256  
YES  
NO  
YES  
NO  
14  
8
510  
510  
510  
510  
510  
510  
510  
YES  
YES  
YES  
YES  
NO  
YES  
YES  
YES  
YES  
NO  
8
14  
8
0.5  
20  
14  
8
20  
NO  
20  
NO  
YES  
YES  
8
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright Intersil Americas Inc. 2005. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  
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