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MAX3188E
  • MAX3188E

MAX3188E

PRODUCTION

±15kV ESD-Protected, 1Mbps, 1µA RS-232 Transmitters in SOT23-6 Industry's First ±15kV ESD-Protected RS-232 Transmitters in a SOT Package

Analog Devices MAX3188E Product Info

10 February 2026 6

Features

  • Small 6-Pin SOT23 Package
  • ESD-Protected RS-232 Output
    • ±15kV per Human Body Model
    • ±8kV per IEC 1000-4-2, Contact Discharge
    • ±15kV per IEC 1000-4-2, Air-Gap Discharge
  • 150µA Operating Supply Current
  • Shutdown Reduces Supply Current to 1µA
  • Guaranteed Data Rate
    • 1Mbps (MAX3189E)
    • 250kbps (MAX3188E)
  • Three-State RS-232 Transmitter Output
  • No External Components

Part details & applications

The MAX3188E/MAX3189E single RS-232 transmitters in a SOT23-6 package are for space- and cost-constrained applications requiring minimal RS-232 communications. These devices consume only 150µA of supply current from ±4.5V to ±6V supplies. They feature a shutdown input that reduces current consumption to only 1µA and forces the transmitter output into a high-impedance state. RS-232 data transmission is guaranteed up to 250kbps with the MAX3188E and up to 1Mbps with the MAX3189E.

The MAX3188E/MAX3189E are EIA/TIA-232 transmitters that convert CMOS/TTL logic levels to RS-232-compliant signals. The transmitter output is protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, to ±8kV using the IEC 1000-4-2 Contact Discharge method, and to ±15kV per the Human Body Model, ensuring strict compliance with international standards. The MAX3188E/MAX3189E transmitters have a standard inverting output.

Applications

  • Diagnostic Ports
  • Digital Still Cameras
  • Handheld Equipment
  • Network Equipment
  • Set-Top Boxes
  • Telecommunications

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