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MAX3243EUI Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3243EUI Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 17 page  MAX3221/MAX3223/MAX3243 +3V to +5.5V RS-232 Transceivers with AutoShutdown General Description The MAX3221/MAX3223/MAX3243 achieve 1µA supply current with Maxim’s revolutionary AutoShutdown™ feature. When the MAX3221/MAX3223/MAX3243 do not sense a valid signal level on their receiver inputs, the on-board power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input. The MAX3221/MAX3223/MAX3243 require only 0.1µF capacitors in 3.3V operation, and can operate from input voltages ranging from +3.0V to +5.5V. A proprietary, high-efficiency, dual charge-pump power supply and a low-dropout transmitter combine to deliv- er true RS-232 performance from a single +3.0V to +5.5V supply. The MAX3221 is a 1-driver/1-receiver 16-pin SSOP version of the 20-pin 2-driver/2-receiver MAX3223. The MAX3243 is a 3-driver/5-receiver with a comple- mentary always-active receiver for external monitoring in a variety of 28 pin packages. Please see order information table for package offerings. Applications • Battery-Powered Equipment • Hand-Held Equipment • Peripherals • Portable Diagnostics Equipment Benefits and Features • Integrated Charge Pump Circuitry Simplifies Power Requirements • Eliminates the Need for a ±12 Supply • Operation From a Single +3.3V or +5V Supply • 1µA Supply Current in Shutdown Mode Saves Power • AutoShutdown Feature is Enabled After No Activity on Receiver Inputs for 30µs • Software Control Option for Shutdown 19-0306; Rev 9; 1/15 PART MAX3221CAE MAX3221EUE† -40°C to +85°C 0°C to +70°C TEMP RANGE PIN-PACKAGE 16 SSOP 16 TSSOP †Future product—contact factory for availability. AutoShutdown and UCSP are trademarks of Maxim Integrated Products, Inc. Pin Configurations appear at end of data sheet. Typical Operating Circuits appear at end of data sheet. MAX3223EPP -40°C to +85°C 20 Plastic DIP MAX3223EAP -40°C to +85°C 20 SSOP MAX3243CWI 0°C to +70°C 28 Wide SO MAX3243CAI 0°C to +70°C 28 SSOP MAX3243EWI -40°C to +85°C 28 Wide SO MAX3243EAI -40°C to +85°C 28 SSOP MAX3223CPP MAX3223CAP 0°C to +70°C 0°C to +70°C 20 Plastic DIP 20 SSOP Ordering Information Selector Guide MAX3221 MAX3223 MAX3243 1 2 3 1 2 3.0 to 5.5 3.0 to 5.5 3.0 to 5.5 5 Yes Yes Yes PART Tx Rx VCC RANGE (V) AutoShutdown MAX3221CUE† 0°C to +70°C 16 TSSOP MAX3221EAE -40°C to +85°C 16 SSOP MAX3223CUP 0°C to +70°C 20 TSSOP MAX3223EUP -40°C to +85°C 20 TSSOP MAX3243CUI 0°C to +70°C 28 TSSOP MAX3243EUI -40°C to +85°C 28 TSSOP |
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