Click here for production status of specific part numbers. MAX3221/MAX3223/ +3V to +5.5V RS-232 MAX3243 Transceivers with AutoShutdown General Description Benefits and Features The MAX3221/MAX3223/MAX3243 achieve 1A supply Integrated Charge Pump Circuitry Simplifies Power current with Maxims revolutionary AutoShutdown Requirements feature. When the MAX3221/MAX3223/MAX3243 do not Eliminates the Need for a 12 Supply sense a valid signal level on their receiver inputs, the on- Operation From a Single +3.3V or +5V Supply board power supply and drivers shut down. This occurs 1A Supply Current in Shutdown Mode Saves Power if the RS-232 cable is disconnected or if the transmitters AutoShutdown Feature is Enabled After No Activity of the connected peripheral are turned off. The system on Receiver Inputs for 30s turns on again when a valid level is applied to any RS-232 Software Control Option for Shutdown receiver input. The MAX3221/MAX3223/MAX3243 require only 0.1F Ordering Information capacitors in 3.3V operation, and can operate from input voltages ranging from +3.0V to +5.5V. PART TEMP RANGE PIN-PACKAGE A proprietary, high-efficiency, dual charge-pump power MAX3221CAE 0C to +70C 16 SSOP supply and a low-dropout transmitter combine to deliver MAX3221CUE 0C to +70C 16 TSSOP true RS-232 performance from a single +3.0V to +5.5V supply. MAX3221EAE -40C to +85C 16 SSOP The MAX3221 is a 1-driver/1-receiver 16-pin SSOP MAX3221EUE -40C to +85C 16 TSSOP version of the 20-pin 2-driver/2-receiver MAX3223. MAX3223CPP 0C to +70C 20 Plastic DIP The MAX3243 is a 3-driver/5-receiver with a complementary MAX3223CAP 0C to +70C 20 SSOP always-active receiver for external monitoring in a variety MAX3223CUP 0C to +70C 20 TSSOP of 28 pin packages. See Order Information table for package offerings. MAX3223EPP -40C to +85C 20 Plastic DIP MAX3223EAP -40C to +85C 20 SSOP Applications MAX3223EUP -40C to +85C 20 TSSOP Battery-Powered Equipment Hand-Held Equipment MAX3243CWI 0C to +70C 28 Wide SO Peripherals MAX3243CAI 0C to +70C 28 SSOP Portable Diagnostics Equipment MAX3243CUI 0C to +70C 28 TSSOP Selector Guide MAX3243EWI -40C to +85C 28 Wide SO MAX3243EAI -40C to +85C 28 SSOP PART Tx Rx V RANGE (V) AutoShutdown CC MAX3243EUI -40C to +85C 28 TSSOP MAX3221 1 1 3.0 to 5.5 Yes MAX3223 2 2 3.0 to 5.5 Yes Future productcontact factory for availability. MAX3243 3 5 3.0 to 5.5 Yes Pin Configurations appear at end of data sheet. Typical Operating Circuits appear at end of data sheet. AutoShutdown and UCSP are trademarks of Maxim Integrated Products, Inc. 19-0306 Rev 10 5/19MAX3221/MAX3223/ +3V to +5.5V RS-232 MAX3243 Transceivers with AutoShutdown Absolute Maximum Ratings V ..........................................................................-0.3V to +6V 16-Pin TSSOP (derate 6.70mW/C above +70C) ......533mW CC V+ (Note 1) ..............................................................-0.3V to +7V 20-Pin Plastic DIP V- (Note 1) ..............................................................+0.3V to -7V (derate 11.11mW/C above +70C) .............................889mW V+ + V- (Note 1) ................................................................+13V 20-Pin SSOP (derate 8.00mW/C above +70C) ........640mW Input Voltages 20-Pin TSSOP DIP T IN, FORCEOFF, FORCEON, EN (MAX3223) ..-0.3V to +6V (derate 7.00mW/C above +70C) ..............................559mW R IN.................................................................................25V 28-Pin Wide SO (derate 12.50mW/C above +70C) ........1W Output Voltages 28-Pin SSOP (derate 9.52mW/C above +70C) ........762mW T OUT ..........................................................................13.2V 28-Pin TSSOP (derate 8.70mW/C above +70C) ......696mW R OUT, INVALID .................................. -0.3V to (V + 0.3V) Operating Temperature Ranges CC Short-Circuit Duration MAX32 C ...................................................0C to +70C T OUT ...................................................................Continuous MAX32 E ............................................... -40C to +85C Continuous Power Dissipation (T = +70C) Storage Temperature Range ............................ -65C to +150C A 16-Pin SSOP (derate 7.14mW/C above +70C) ........571mW Lead Temperature (soldering, 10s) .................................+300C Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (V = +3.0V to +5.5V, C1C4 = 0.1F (Note 2), T = T to T , unless otherwise noted. Typical values are at T = +25C.) CC A MIN MAX A PARAMETER CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS All R IN open, FORCEON = GND, Supply Current, AutoShutdown 1.0 10 A FORCEOFF = V CC V = 3.3V CC Supply Current, Shutdown or 5.0V, FORCEOFF = GND 1.0 10 A T = +25C A Supply Current, FORCEON = FORCEOFF = V , CC 0.3 1.0 mA AutoShutdown Disabled no load LOGIC INPUTS AND RECEIVER OUTPUTS Input Logic Threshold Low T IN, FORCEON, FORCEOFF, EN (MAX3223) 0.8 V V = 3.3V 2.0 CC Input Logic Threshold High T IN, EN, FORCEON, FORCEOFF V V = 5.0V 2.4 CC Input Leakage Current T IN, EN, FORCEON, FORCEOFF 0.01 1.0 A Output Leakage Current Receivers disabled 0.05 10 A Output Voltage Low I = 1.6mA 0.4 V OUT V - V - CC CC Output Voltage High I = -1.0mA V OUT 0.6 0.1 AUTOSHUTDOWN (FORCEON = GND, FORCEOFF = V ) CC Positive threshold 2.7 Receiver Input Thresholds to Figure 5 V Transmitters Enabled Negative threshold -2.7 Receiver Input Thresholds to 1A supply current, Figure 5 -0.3 +0.3 V Transmitters Disabled INVALID Output Voltage Low I = 1.6mA 0.4 V OUT INVALID Output Voltage High I = 1.0mA V - 0.6 V OUT CC Receiver Threshold to Figure 5 250 s Transmitters Enabled (t ) WU Maxim Integrated 2 www.maximintegrated.com