ADM222AN

高速，+ 5 V， 0.1 uF的CMOS RS - 232驱动器/接收器 High Speed, +5 V, 0.1 uF CMOS RS-232 Drivers/Receivers

Product Details

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**

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Computers

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Peripherals

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Modems

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Printers

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Instruments

### Features and Benefits

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200 kB/s transmission rate

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Small 0.1 μF charge pump capacitors

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Single 5 V power supply

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Meets all EIA-232-E and V.28 specifications

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Two drivers and two receivers

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On-board DC-DC converters

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9 V output swing with 5 V supply

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30 V receiver input levels

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Pin compatible with MAX222/MAX232A/MAX242