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UM3486E PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 UM3486E
기능 True RS-485 Transceivers
제조업체 Union Semiconductor
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UM3486E 데이터시트, 핀배열, 회로
UM3483E/UM3486E
3V to 5.5V-Powered, ±15kV ESD-Protected,
Slew-Rate-Limited, True RS-485 Transceivers
UM3483E/UM3486E SOP8/DIP8
General Description
The UM3483E, 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 UM3483E features slew-rate-limited driver which minimizes EMI and reduces
reflections resulted from improperly terminated cables. The UM3483E allows up to 500kbps
error-free data transmission, while the partially slew-rate-limited UM3486E transmits at data rates
up to 2.5Mbps.
The UM3483E, 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.
Both parts 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 UM3483E, UM3486E are intended for half-duplex communication and are available in SOP8
and DIP8 packages.
Applications
Features
Telecommunications
Low-Power RS-485 Transceivers
Integrated Services Digital Networks
Industrial-Control Local Area
Networks
Transceivers for EMI-Sensitive
Applications
Packet Switching
Level Translators
ESD Protection for RS-485 I/O Pins
±15kVHuman Body Model
±15kVIEC61000-4-2, Air-Gap Discharge
±8kVIEC61000-4-2, 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
________________________________________________________________________
http://www.union-ic.com Rev.03 Dec.2014
1/18




UM3486E pdf, 반도체, 판매, 대치품
UM3483E/UM3486E
DC Electrical Characteristics (Continued)
(VCC = +3V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA =
+25°C.)
Parameter
RECEIVER
Symbol
Test Conditions
Min Typ Max Unit
Receiver Differential
Threshold Voltage
VTH
-7V≤VCM≤12V
-0.2 -0.05 0.2 V
Receiver Input Hysteresis
Receiver Input Resistance
ΔVTH
RIN
VCM=0V
-7V≤VCM≤12V
25
96
mV
kΩ
Input Current (A, B)
DE=0V,
VIN = 12V
IIN2 VCC=0V or
+3V to 5.5V VIN = -7V
1
mA
-0.8
Receiver Output High Voltage VOH
IOUT=-1.5mA, VID=200mV,
Figure 2
Vcc-1.5
V
Receiver Output Low Voltage VOL
IOUT=2.5mA, VID=200mV,
Figure 2
0.4 V
Three-State (High Impedance)
Output Current at Receiver
IOZR
0VVOUTVCC
1 µA
Receiver Short-Circuit Output
Current
IOSR
0VVROVCC
±20
±60 mA
ESD Protection
ESD Protection for A, B
Human Body Model
IEC61000-4-2 Air Discharge
IEC61000-4-2 Contact
Discharge
±15
±15
±8
kV
________________________________________________________________________
http://www.union-ic.com Rev.03 Dec.2014
4/18

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UM3486E 전자부품, 판매, 대치품
Typical Operating Characteristics
(VCC=+3.3V, TA=+25ºC, unless otherwise noted.)
Supply Current vs. Temperature
DE=1, /RE=0, DI=1
UM3483E/UM3486E
Supply Current vs. Temperature
DE=1, /RE=0, DI=0
Output Current
vs. Receiver Output High Voltage
Output Current
vs. Receiver Output Low Voltage
Receiver Output High Voltage vs.
Temperature
Receiver Output Low Voltage vs.
Temperature
Driver Differential Output Voltage vs. Temperature Driver Differential Output Voltage vs. Temperature
DI=1
DI=0
________________________________________________________________________
http://www.union-ic.com Rev.03 Dec.2014
7/18

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부품번호상세설명 및 기능제조사
UM3486E

True RS-485 Transceivers

Union Semiconductor
Union Semiconductor

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