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ADM3251E:  Isolated Single Channel RS-232 Line Driver/Receiver

The ADM3251E is a high speed, single-channel RS-232 transceiver device that operates from a single power supply. This device is ideally suited to operation in electrically harsh environments or where RS-232 cables are frequently being plugged/unplugged.

The ADM3251E incorporates dual-channel digital isolators with isoPower integrated, isolated power. There is no requirement for a separate ...More

ADM3251E:  Isolated Single Channel RS-232 Line Driver/Receiver

Product Description

The ADM3251E is a high speed, single-channel RS-232 transceiver device that operates from a single power supply. This device is ideally suited to operation in electrically harsh environments or where RS-232 cables are frequently being plugged/unplugged.

The ADM3251E incorporates dual-channel digital isolators with isoPower integrated, isolated power. There is no requirement for a separate isolated dc-to-dc converter as the ADM3251E has a chip-scale dc-to-dc converter which is based on Analog Devices, Inc. iCoupler® technology.

Analog Devices’ chip-scale transformer iCoupler technology is used both for the isolation of the logic signals as well as for the dc-to-dc converter. The result is a small form factor, total isolation solution.

Five external 0.1μF charge pump capacitors are used for the voltage doubler/inverter permitting operation from a single supply.

The ADM3251E conforms to the EIA-232E specifications and operates at data rates up to 460 kbps.

The device is ideally suited to operation in electrically harsh environments. RS-232 pins, RIN and TOUT are protected against electrostatic discharges (up to ±15 kV ESD protection).

The ADM3251E is available in a 20 lead Wide Body SOIC package.

Applications

  • High noise data communications
  • Industrial Communications
  • Industrial/Telecom Diagnostic Ports

    • RESOURCES & TOOLS

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    • 460 kbps Data Rate
    • 1 Tx and 1 Rx
    • Meets EIA-232E specifications
    • 0.1uF charge pump capacitors
    • Integrated isolated dc-to-dc converter
    • ESD protection to IEC1000-4-2(801.2)
      on RIN and TOUT pins.
    • ±8kV: contact discharge
    • ±15kV: air gap discharge
    • Integrated isolated dc-to-dc converter
    • High common-mode transient immunity: >25kV/us
    • Safety and regulatory approvals (pending)
      UL recognition
      VDE certificate of conformity
    • 20 Lead WSOIC package
    • iCouplerType: RS-232
    • # of Inputs Side 1: 1
    • # of Inputs Side 2: 1
    • Max Data Rate(Mbps): 0.46Mbps
    • Package: 20-Lead SOIC
    • Insulation Rating (kVrms): 2.5kV rms
    • Max Operating Temp (°C): 85Deg
    • Pos Supply: +4.5V to +5.5V

    Functional Block Diagram for ADM3251E

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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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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.