ADM222 High Speed, 5 V, 0.1 µF CMOS RS-232 Transceiver with 2 Drivers, 2 Receivers, 200kBPS Data Rate and a Shutdown Pin

The ADM222, ADM232A, ADM242 are a family of high-speed RS-232 line drivers/receivers offering transmission rates up to 200 kB/s. Operating from a single 5 V power supply, a highly efficient on-chip charge pump using small (0.1 µF) external capacitors allows RS-232 bipolar levels to be developed. Two RS-232 drivers and two RS-232 receivers are provided on each device.

The devices are fabricated on BiCMOS, an advanced mixed technology process that combines low power CMOS with highspeed bipolar circuitry. This allows for transmission rates up to 200 kB/s, yet minimizes the quiescent power supply current to under 5 mA.

The ADM232A is a pin-compatible, high-speed upgrade for the AD232 and for the ADM232L. It is available in 16-lead DIP and in both narrow and wide surface-mount (SOIC) packages.

The ADM222 contains an additional shutdown (SHDN) function that may be used to disable the device, thereby reducing the supply current to 0.1 µA. During shutdown, all transmit/receive functions are disabled. The ADM222 is available in 18-lead DIP and in a wide surface-mount (SOIC) package.

The ADM242 combines both shutdown (SHDN) and enable (EN) functions. The shutdown function reduces the supply current to 0.1 mA. During shutdown, the transmitters are disabled but the receivers continue to operate normally. The enable function allows the receiver outputs to be disabled thereby facilitating sharing a common bus. The ADM242 is available in 18-lead DIP and in a wide surface-mount (SOIC) package.

Applications
  • Computers
  • Peripherals
  • Modems
  • Printers
  • Instruments
Features and Benefits
  • 200 kB/s transmission rate
  • Small (0.1 μF) charge pump capacitors
  • Single 5 V power supply
  • Meets all EIA-232-E and V.28 specifications
  • Two drivers and two receivers
  • On-board DC-DC converters
  • 9 V output swing with 5 V supply
  • 30 V receiver input levels
  • Pin compatible with MAX222/MAX232A/MAX242
  • Interface & Isolation
    Data Sheets
    Documentnote
    ADM222/ADM232A/ADM242: High-Speed, 5 V, 0.1 µF CMOS RS-232 Drivers/Receivers Data Sheet (Rev. C)PDF 202.08 K
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADM222AN Obsolete18 ld PDIPOTH 20-40 to 85C00N
    ADM222ANZ Production18 ld PDIPOTH 20-40 to 85C2.021.58Y
    ADM222AR Obsolete18 ld SOIC - WideOTH 41-40 to 85C00N
    ADM222ARZ Production18 ld SOIC - WideOTH 41-40 to 85C2.021.58Y
    ADM222ARZ-REEL Production18 ld SOIC - WideREEL 1000-40 to 85C01.58Y
    Reference Materials
    ADM222/ADM232A/ADM242: High-Speed, 5 V, 0.1 µF CMOS RS-232 Drivers/Receivers Data Sheet (Rev. C) adm222
    RS-232 Transceivers Applications Bulletin (Summer 2008) adm3251e
    RS-232 Transceivers Cross Reference Guide adm2486
    ADI RS-485/RS-422 Cross Reference Guide adm2486
    Interface Primer adm3491