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UM3491EESE
具有IEC ESD保护的3.3V供电,10Mbps,全双工RS422收发器
Datasheet Reliability Report Package Information Order Sample  
Key Specifications
Part Number Description Status Supply Voltage(Nom)(V) No. of TX No. of RX Duplex Signaling Rate(Max)(Mbps) ESD Contact (kV) ESD Air (kV) Number of Nodes Common Mode Range(V) Fail Safe ICC(Max) (mA) Operating Temperature Range(℃) Pin/Package EV Kit Available?
UM3491EESE 具有IEC ESD保护的3.3V供电,10Mbps,全双工RS422收发器 Active 3.3 1 1 Full 10 ±8 ±15 256 -7 to 12 Idle, Open, Short 0.8 -40 to 85 14/SOP
View All>> Production Description

The UM3491EESE is ±8kV electrostatic discharge (ESD)-protected, high-speed transceivers for RS-422 communication that contain one driver and one receiver. The UM3491EESE contains an additional receiver and driver enable control. The device features 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 UM3491EESE allows transmit speeds up to 10Mbps. The device features enhanced ESD protection. All transmitter outputs and receiver inputs are protected to ±8kV using the Human Body Model.
The device has a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. The UM3491EESE is intended for full-duplex communications.
 
 
Features
 
- ESD Protection for RS-422 I/O Pins
  ±8kV, Human Body Model
- True Fail-Safe Receiver while Maintaining EIA/TIA-422 Compatibility
- Maximum Data Rate up to 10Mbps
- Error-Free Data Transmission
- 1nA Low-Current Shutdown Mode
- Allow Up to 256 Transceivers on the Bus
 
Typical Application Circuit

 

                                                    Figure 1: Typical Full-Duplex RS-422 Network
 
Applications
 
- RS-422 Communications
- Level Translators
- Transceivers for EMI-Sensitive Applications
- Industrial-Control Local Area Networks
 
Pin Configurations  

 
  
Ordering Information

Part Number
Temperature Range
Packaging Type
Shipping Qty
UM3491EESE
-40°C to +85°C
SOP14
2500pcs/13 Inch
Tape & Reel
Application Notes
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Product Selection Guide
Interface and System Interconnect Selection Guide.pdf
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