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MFG:ADI D/C:09
Part Number: ADM483E
MFG: ADI
D/C: 09
Description: The ADM483E is a robust, low power differential line transceiver suitable for communication on multipoint bus transmiss...
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ADM483E
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DataSheet
General Description
ADM483E General Description
The ADM483E is a robust, low power differential line transceiver suitable for communication on multipoint bus transmission lines. Internal protection against electrostatic discharge (ESD), electrical fast transient (EFT) and electromagnetic immunity (EMI) allows operation in electrically harsh environments.
ESD protection on the I-O lines meets ±15 kV when tested using the Human Body Model. EFT protection meets ±2 kV in accordance with IEC1000-4-4, while EMI immunity is in excess of 10 V/m meeting IEC1000-4-3.
The level of unwanted emissions is also carefully controlled using slew limiting on the driver outputs. This reduces reflections with improperly terminated cables and also minimizes electromagnetic interference. The controlled slew rate limits the data rate to 250 kbps.
The ADM483E is intended for balanced data transmission and complies with both EIA Standards RS-485 and RS-422. It contains a differential line driver and a differential line receiver and is suitable for half duplex data transmission, as the driver and receiver share the same differential pins.
The input impedance on the ADM483E is 12 kW, allowing up to 32 transceivers on the bus.
The ADM483E operates from a single +5 V ± 10% power supply. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. This feature forces the driver output into a high impedance state if, during fault conditions, a significant temperature increase is detected in the internal driver circuitry.
The receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating). The ADM483E is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with robust bipolar technology.
It is fully specified over the industrial temperature range and is available in 8-lead DIP and SOIC packages.
ADM483E Maximum Ratings
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+7 V
Inputs
Driver Input (DI) . . . . . . . . . . . . . . . . . 0.5 V to VCC + 0.5 V
Control Inputs (DE, RE) . . . . . . . . . .. . 0.5 V to VCC + 0.5 V
Receiver Inputs (A, B) . . . . . . . . . . . . . . . . . . 14 V to +14 V
Outputs
Driver Outputs . . . . . . . . . . . . . . . . . . . . . 12.5 V to +12.5 V
Receiver Output . . . . . . . . . . . . . . . . . . 0.5 V to VCC +0.5 V
ESD Rating: Air (Human Body Model) (A, B Pins) . . . . ±15 kV
ESD Rating: Contact (Human Body Model)
(A, B Pins) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±8 kV
ESD Rating MIL-STD-883B Method 3015
(Except A, B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3.5 kV
EFT Rating (IEC1000-4-4) (A, B Pins) . . . . . . . . . .. . . . ±2 kV
EMI Immunity (IEC1000-4-3) . . . . . . . . . . . . . . . . . . . 10 V/m
Power Dissipation 8-Pin DIP . . . . . . . . . . . . . . . . . . . 727 mW
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . +135/W
Power Dissipation 8-Pin SOIC . . . . . . . . . . . . . . . . . . 470 mW
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . +110/W
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . . . 40 to +85
Storage Temperature Range . . . . . . . . . . . . 65 to +150
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . .. . . +215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . .. . . . . +220
Inputs
Driver Input (DI) . . . . . . . . . . . . . . . . . 0.5 V to VCC + 0.5 V
Control Inputs (DE, RE) . . . . . . . . . .. . 0.5 V to VCC + 0.5 V
Receiver Inputs (A, B) . . . . . . . . . . . . . . . . . . 14 V to +14 V
Outputs
Driver Outputs . . . . . . . . . . . . . . . . . . . . . 12.5 V to +12.5 V
Receiver Output . . . . . . . . . . . . . . . . . . 0.5 V to VCC +0.5 V
ESD Rating: Air (Human Body Model) (A, B Pins) . . . . ±15 kV
ESD Rating: Contact (Human Body Model)
(A, B Pins) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±8 kV
ESD Rating MIL-STD-883B Method 3015
(Except A, B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3.5 kV
EFT Rating (IEC1000-4-4) (A, B Pins) . . . . . . . . . .. . . . ±2 kV
EMI Immunity (IEC1000-4-3) . . . . . . . . . . . . . . . . . . . 10 V/m
Power Dissipation 8-Pin DIP . . . . . . . . . . . . . . . . . . . 727 mW
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . +135/W
Power Dissipation 8-Pin SOIC . . . . . . . . . . . . . . . . . . 470 mW
JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . +110/W
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . . . 40 to +85
Storage Temperature Range . . . . . . . . . . . . 65 to +150
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . .. . . +215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . .. . . . . +220
ADM483E Features
`Robust RS-485 Transceiver
`15 kV ESD Protection Using HBM
`2 kV EFT Protection Meets IEC1000-4-4
`High EM Immunity Meets IEC1000-4-3
`Reduced Slew Rate for Low EM Interference
`250 kbps Data Rate
`Single +5 V ±10% Supply
`7 V to +12 V Bus Common-Mode Range
`12 k Input Impedance
`Short Circuit Protection
`Excellent Noise Immunity
`36 A Supply Current
`0.1 A Shutdown Current
`15 kV ESD Protection Using HBM
`2 kV EFT Protection Meets IEC1000-4-4
`High EM Immunity Meets IEC1000-4-3
`Reduced Slew Rate for Low EM Interference
`250 kbps Data Rate
`Single +5 V ±10% Supply
`7 V to +12 V Bus Common-Mode Range
`12 k Input Impedance
`Short Circuit Protection
`Excellent Noise Immunity
`36 A Supply Current
`0.1 A Shutdown Current
ADM483E Typical Application
·Low Power RS-485 Systems
·Electrically Harsh Environments
·EMI Sensitive Applications
·DTE-DCE Interface
·Packet Switching
·Local Area Networks
·Electrically Harsh Environments
·EMI Sensitive Applications
·DTE-DCE Interface
·Packet Switching
·Local Area Networks
ADM483E Connection Diagram
ADM483E
PDF/DataSheet Download
- Datasheet: ADM483E
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