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UM3486EEPA
具有IEC ESD保护的3V至5.5V供电,2.5Mbps RS485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?
UM3486EEPA 具有IEC ESD保护的3V至5.5V供电,2.5Mbps RS485收发器 Active 3.3 1 1 Half 2.5 ±8 ±15 256 -7 to 12 Idle, Open, Short 0.7 -40 to 85 8/DIP
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Product Description
 
The UM3486E are 3V to 5.5V-powered, ±15kV ESD-protected, slew-rate-limited differential transceivers which provide full RS485 compatibility. Each part contains one driver and one receiver, which is designed for data transmission with extended common mode range (-7V to 12V). The partially slew-rate-limited UM3486E transmits at data rates up to 2.5Mbps.
The UM3486E also feature enhanced electrostatic discharge (ESD) protection. All of the transmitter outputs and receiver inputs are protected to ±15kV using IEC61000-4-2 Air-Gap Discharge, ±15kV using the Human Body Model and ±8kV using IEC61000-4-2 Contact Discharge.
Drivers are short-circuit current limited. When the driver outputs are placed into a high-impedance state by thermal shutdown circuitry, drivers are protected against excessive power dissipation. And the fail-safe feature of the receiver input guarantees a logic-high output if both inputs are open, shorted or idle.
The UM3486E have power up/down mode, the glitch-free driver outputs permit live insertion or removal of the transceiver into/from the data bus. The CMOS design offers significant power savings without sacrificing ruggedness against overload or ESD damage. The typical quiescent current is only 300μA during operation and 1μA in shutdown mode.
The UM3486E are intended for half-duplex communication and are available in SOP8 and DIP8 packages.
 
Features
 
- ESD Protection for RS-485 I/O Pins
  ±15kV—Human Body Model
  ±15kV—IEC61000-4-2, Air-Gap Discharge
  ±8kV—IEC61000-4-2, Contact Discharge
- 3V to 5.5V Supply Voltage Range
- Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission
- 1μA Low-Current Shutdown Mode
- -7V to +12V Common-Mode Input Voltage Range
- Allows up to 256 Transceivers on the Bus
- Thermal Shutdown
- Current-Limiting for Driver Overload Protection
 
Typical Operating Circuits
 
 

Applications

- Telecommunications
- Low-Power RS-485 Transceivers
- Integrated Services Digital Networks
- Industrial-Control Local Area Networks
- Transceivers for EMI-Sensitive Applications
- Packet Switching
- Level Translators

Pin Configurations

 
Communication Function Table
 
Table1. Transmitting                       

INPUTS
OUTPUTS
MODE
RE(______)
DE
DI
B
A
X
1
1
0
1
Normal
X
1
0
1
0
Normal
0
0
X
High-Z
High-Z
Normal
1
0
X
High-Z
High-Z
Shutdown

X=Don’t care; High-Z=High impedance
 
Table2. Receiving

INPUTS
OUTPUTS
MODE
RE(______)
DE
A, B
RO
0
X
>-50mV
1
Normal
0
X
<-200mV
0
Normal
0
X
Inputs Open
1
Normal
1
0
X
High-Z
Shutdown

X=Don’t care; High-Z=High impedance
 
Ordering Information
 
Part Number
Operating Temperature
Mark Code
Package Type
Shipping Qty
UM3486EEPA
-40°C to +85°C
UM3486EEPA
DIP8
50pcs/Tube
Application Notes
微处理器超长启动周期中的外部看门狗管理方案v2.pdf
利用3.3V供电RS485接口实现远距离数据通信.pdf
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超低功耗LDO线性稳压器.pdf
I2C-BUS电平转换芯片在安防产品的应用.pdf
0201超小封装ESD保护器件.pdf
Analog Switch Permits Port Sharing in Portable Equipment.pdf
Balanced Modulator Demodulator Employing UM4684.pdf
Level Shifter for High Speed and Wide Voltage Range Interface.pdf
Low Resistance Analog Switches Permit Speaker Switching in Audio Devices.pdf
Low-Icct Analog Switches for Ultra-Portable Designs.pdf
Selecting the Right CMOS Analog Switch.pdf
Product Selection Guide
Interface and System Interconnect Selection Guide.pdf
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