Analog Devices Inc.

Category: Drivers and Interfaces

The MAX3222/MAX3232/MAX3237/MAX3241 transceivershave a proprietary low-dropout transmitter outputstage enabling true RS-232 performance from a 3.0V to5.5V supply with a dual charge pump. The devices requireonly four small 0.1µF external charge-pump capacitors.The MAX3222, MAX3232, and MAX3241 are guaranteedto run at data rates of 120kbps while maintaining RS-232output levels. The MAX3237 is guaranteed to run at datarates of 250kbps in normal operating mode and 1Mbps inthe MegaBaud™ operating mode.The MAX3222/MAX3232 have 2 receivers and 2 drivers.The MAX3222 and MAX3232 are pin, package, and functionallycompatible with the industry-standard MAX242and MAX232, respectively.The MAX3241 has 5 receivers and 3 drivers, while theMAX3237 has 3 receivers and 5 drivers. Receivers R1(MAX3237/MAX3241) and R2 (MAX3241) have extraoutputs in addition to their standard outputs. These extraoutputs are always active, allowing external devices to bemonitored without forward biasing the protection diodes incircuitry that may have VCC completely removed.The MAX3222, MAX3232, and MAX3241 are available inspace-saving TSSOP and SSOP packages with operatingtemperatures of either -40°C to +85°C or 0°C to 70°C.ApplicationsBattery-Powered EquipmentHandheld EquipmentHigh-Speed ModemsNotebook, Subnotebook, and Palmtop ComputersPeripheralsPrinters

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