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ADM2490E:  High Speed ESD Protected Full-Duplex iCoupler® Isolated RS-485 Transceiver

The ADM2490E is an isolated data transceiver with ±8 kV ESD protection that is suitable for high speed, full-duplex communi-cation on multipoint transmission lines. It is designed for balanced transmission lines and complies with ANSI TIA/EIA-485-A-1998 and ISO 8482: 1987(E). The device employs Analog Devices, Inc., iCoupler® technology to combine a 2-channel isolator, a three-state differential ...More

ADM2490E:  High Speed ESD Protected Full-Duplex iCoupler® Isolated RS-485 Transceiver

Product Description

The ADM2490E is an isolated data transceiver with ±8 kV ESD protection that is suitable for high speed, full-duplex communi-cation on multipoint transmission lines. It is designed for balanced transmission lines and complies with ANSI TIA/EIA-485-A-1998 and ISO 8482: 1987(E). The device employs Analog Devices, Inc., iCoupler® technology to combine a 2-channel isolator, a three-state differential line driver, and a differential input receiver into a single package.

The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection to ±8 kV using the human body model (HBM). The logic side of the device can be powered with either a 5 V or a 3 V supply, whereas the bus side requires an isolated 5 V supply.

The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention could cause excessive power dissipation.

The ADM2490E is available in a wide body, 16-lead SOIC package and operates over the −40°C to +105°C temperature range.

Application

  • Isolated RS-485/RS-422 Interfaces
  • Industrial Field Networks
  • INTERBUS
  • Multipoint Data Transmission Systems

    • Data Sheet, Rev. A, 8/08

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    • Isolated Full Duplex RS-485/RS-422 Transceiver
    • ±8 kV ESD Protection on RS-485 I/O Pins
    • 16 Mbps Data Rate
    • Complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482:1987(E)
    • High Common Mode Transient Immunity: >25kV/ μs
    • Suitable for 5 V or 3 V Operation (VDD1)
    • Receiver Open-circuit Fail-safe Design
    • Thermal Shutdown Protection
    • Safety and Regulatory Approvals (See Data Sheet for Details)
    • Operating Temperature Range: -40° to 105°C
    • Wide Body 16-lead SOIC package
    • # Ch: 1
    • iCouplerType: RS-485
    • Max Data Rate(Mbps): 16Mbps
    • Package: 16-Lead SOIC
    • Insulation Rating (kVrms): 5kV rms
    • Max Operating Temp (°C): 105Deg
    • Pos Supply: +2.7V to +5.5V

    Functional Block Diagram for ADM2490E

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    Part# # Ch # of Inputs Side 1 # of Inputs Side 2 Insulation Rating (kVrms) Max Data Rate(Mbps) Max Prop Delay (ns) Pos Supply Max Operating Temp (°C) Package Price* (1000-4999)
    ADUM1100 1 1 0 2.5 100 18 +3V to +5.5V 125 8-Lead SOIC $1.63
    ADUM1200 2 2 0 2.5 25 45 +2.7V to +5.5V 125 8-Lead SOIC $1.22
    ADUM1201 2 1 1 2.5 25 45 +2.7V to +5.5V 125 8-Lead SOIC $1.22
    ADUM1210 2 2 0 2.5 10 50 +2.7V to +5.5V 105 8-Lead SOIC $1.78
    ADUM1300 3 3 0 2.5 90 32 +2.7V to +5.5V 125 16-Lead SOIC $1.63
    ADUM1301 3 2 1 2.5 90 32 +2.7V to +5.5V 125 16-Lead SOIC $1.63
    ADUM1310 3 3 0 2.5 10 50 +2.7V to +5.5V 105 16-Lead SOIC $1.35
    ADUM1311 3 2 1 2.5 10 50 +2.7V to +5.5V 105 16-Lead SOIC $1.35
    ADUM1400 4 4 0 2.5 90 32 +2.7V to +5.5V 125 16-Lead SOIC $2.17
    ADUM1401 4 3 1 2.5 90 32 +2.7V to +5.5V 125 16-Lead SOIC $2.17
    ADUM1402 4 2 2 2.5 90 32 +2.7V to +5.5V 125 16-Lead SOIC $2.17
    ADUM1410 4 4 0 2.5 10 50 +2.7V to +5.5V 105 16-Lead SOIC $1.68
    ADUM1411 4 3 1 2.5 10 50 +2.7V to +5.5V 105 16-Lead SOIC $1.68
    ADUM1412 4 2 2 2.5 10 50 +2.7V to +5.5V 105 16-Lead SOIC $1.68
    ADUM1510 5 5 0 2.5 10 50 +4.5V to +5.5V 105 16-Lead SOIC $4.54
    ADUM2200 2 2 0 5 10 50 +3V to +5.5V 105 16-Lead SOIC $1.67
    ADUM2201 2 1 1 5 10 50 +3V to +5.5V 105 16-Lead SOIC $1.66
    ADUM2400 4 4 0 5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $3.20
    ADUM2401 4 3 1 5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $3.20
    ADUM2402 4 2 2 5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $3.20
    ADUM3100 1 1 0 2.5 50 28 +3V to +5.5V 105 8-Lead SOIC $1.71
    ADUM3200 2 2 0 2.5 25 45 +2.7V to +5.5V 105 8-Lead SOIC $1.28
    ADUM3201 2 1 1 2.5 25 45 +2.7V to +5.5V 105 8-Lead SOIC $1.28
    ADUM3210 2 2 0 2.5 10 50 +2.7V to +5.5V 125 8-Lead SOIC $0.93
    ADUM3211 2 1 1 2.5 10 50 +2.7V to +5.5V 125 8-Lead SOIC $0.93
    ADUM3300 3 3 0 2.5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $1.71
    ADUM3301 3 2 1 2.5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $1.71
    ADUM3400 4 4 0 2.5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $2.28
    ADUM3401 4 3 1 2.5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $2.28
    ADUM3402 4 2 2 2.5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $2.28
    ADUM3440 4 4 0 2.5 150 32 +3V to +5.5V 105 16-Lead SOIC $3.53
    ADUM3441 4 3 1 2.5 150 32 +3V to +5.5V 105 16-Lead SOIC $3.53
    ADUM3442 4 2 2 2.5 150 32 +3V to +5.5V 105 16-Lead SOIC $3.53
    ADUM4400 4 4 0 5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $3.36
    ADUM4401 4 3 1 5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $3.36
    ADUM4402 4 2 2 5 90 32 +2.7V to +5.5V 105 16-Lead SOIC $3.36
    ADUM7440 4 4 0 1 25 56 +3V to +5.5V 105 16-Lead QSOP $1.50
    ADUM7441 4 3 1 1 25 56 +3V to +5.5V 105 16-Lead QSOP $1.50
    ADUM7442 4 2 2 1 25 56 +3V to +5.5V 105 16-Lead QSOP $1.50
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