MAX3222E

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3- to 5.5-V dual channel 500kbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection

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Product details

Parameters

Drivers per package 2 Receivers per package 2 Logic voltage (Min) (V) 3.3 Data rate (Max) (kbps) 500 Main supply voltage (Nom) (V) 3.3, 5 Features Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 open-in-new Find other RS-232 transceivers

Package | Pins | Size

SOIC (DW) 20 132 mm² 12.8 x 10.3 SSOP (DB) 20 38 mm² 5.3 x 7.2 TSSOP (PW) 20 42 mm² 6.5 x 6.4 open-in-new Find other RS-232 transceivers

Features

  • ESD Protection for RS-232 Bus Pins
    • ±15-kV Human-Body Model (HBM)
    • ±8-kV IEC61000-4-2, Contact Discharge
    • ±15-kV IEC61000-4-2, Air-Gap Discharge
  • Meets or Exceeds the Requirements of
    TIA/EIA-232-F and ITU v.28 Standards
  • Operates With 3-V to 5.5-V VCC Supply
  • Operates up to 500 kbit/s
  • Two Drivers and Two Receivers
  • Low Standby Current . . . 1 µA Typ
  • External Capacitors . . . 4 × 0.1 µF
  • Accepts 5-V Logic Input With 3.3-V Supply
  • Alternative High-Speed Pin-Compatible Device (1 Mbit/s) for SNx5C3222E
  • APPLICATIONS
    • Battery-Powered Systems
    • PDAs
    • Notebooks
    • Laptops
    • Palmtop PCs
    • Hand-Held Equipment

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Description

The MAX3222E consists of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND).

The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The device operates at typical data signaling rates up to 500 kbit/s and a maximum of 30-V/µs driver output slew rate.

The MAX3222E can be placed in the power-down mode by setting the power-down (PWRDOWN) input low, which draws only 1 µA from the power supply. When the device is powered down, the receivers remain active while the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is disabled; V+ is lowered to VCC, and V– is raised toward GND. Receiver outputs also can be placed in the high-impedance state by setting enable (EN) high.

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Technical documentation

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Type Title Date
* Datasheet MAX3222E datasheet (Rev. A) Sep. 29, 2009

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CAD/CAE symbols

Package Pins Download
SOIC (DW) 20 View options
SSOP (DB) 20 View options
TSSOP (PW) 20 View options

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