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What is UM3483E?

This electronic component, produced by the manufacturer "Union Semiconductor", performs the same function as "True RS-485 Transceivers".


UM3483E Datasheet PDF - Union Semiconductor

Part Number UM3483E
Description True RS-485 Transceivers
Manufacturers Union Semiconductor 
Logo Union Semiconductor Logo 


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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

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UM3483E equivalent
UM3483E/UM3486E
Driver Switching Characteristics (UM3483E)
(VCC = +3V to 5.5V, TA = +25°C.)
Parameter
Symbol Test Conditions
Min Typ Max Unit
Maximum Data Rate
fMAX
500 kbps
Driver Differential Output Delay
Driver Differential Output Transition Time
Driver Propagation Delay,
Low-to-High Level
Driver Propagation Delay,
High-to-Low Level
| tPLH tPHL | Driver Propagation Delay
Skew (Note 2)
tDD
tTD
tPLH
tPHL
tPDS
RL=60Ω, Figure 3
RL=60Ω, Figure 3
RL=27Ω, Figure 4
RL=27Ω, Figure 4
RL=27Ω, Figure 4
250
250
250
250
500 1000 ns
500 750 ns
550 1000 ns
550 1000 ns
10 30 ns
Driver-Output Enable/Disable Times
Driver Output Enable Time to Low Level
Driver Output Enable Time to High Level
Driver Output Disable Time from High
Level
Driver Output Disable Time from Low
Level
Driver Output Enable Time from Shutdown
to Low Level
Driver Output Enable Time from Shutdown
to High Level
tPZL
tPZH
tPHZ
tPLZ
tPSL
tPSH
RL=110Ω, Figure 6
RL=110Ω, Figure 5
RL=110Ω, Figure 5
RL=110Ω, Figure 6
RL=110Ω, Figure 6
RL=110Ω, Figure 5
100 2500 ns
100 2500 ns
100 100 ns
100 100 ns
500 2500 ns
500 2500 ns
Driver Switching Characteristics (UM3486E)
(VCC = +3V to 5.5V, TA = +25°C.)
Parameter
Symbol Test Conditions
Maximum Data Rate
fMAX
Driver Differential Output Delay
Driver Differential Output Transition Time
Driver Propagation Delay, Low-to-High
Level
Driver Propagation Delay, High-to-Low
Level
| tPLH tPHL | Driver Propagation Delay
Skew (Note 2)
tDD
tTD
tPLH
tPHL
tPDS
RL=60Ω, Figure 3
RL=60Ω, Figure 3
RL=27Ω, Figure 4
RL=27Ω, Figure 4
RL=27Ω, Figure 4
Driver-Output Enable/Disable Times
Driver Output Enable Time to Low Level
Driver Output Enable Time to High Level
Driver Output Disable Time from High
Level
Driver Output Disable Time from Low
Level
Driver Output Enable Time from Shutdown
to Low Level
Driver Output Enable Time from Shutdown
to High Level
tPZL
tPZH
tPHZ
tPLZ
tPSL
tPSH
RL=110Ω, Figure 6
RL=110Ω, Figure 5
RL=110Ω, Figure 5
RL=110Ω, Figure 6
RL=110Ω, Figure 6
RL=110Ω, Figure 5
Min
20
20
25
25
Typ
2500
50
50
55
55
2
60
60
60
60
500
500
Max Unit
kbps
100 ns
100 ns
100 ns
100 ns
10 ns
100 ns
100 ns
100 ns
100 ns
800 ns
800 ns
________________________________________________________________________
http://www.union-ic.com Rev.03 Dec.2014
5/18


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for UM3483E electronic component.


Information Total 18 Pages
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