MAX13223E 70V Fault-Protected, 3.0V to 5.5V, 2Tx/2Rx RS-232 Transceiver General Description Benefits and Features The MAX13223E is a +3.0V to +5.5V-powered EIA/TIA-232 Robust Protection to Withstand Load Dumps, and V.28 communications interface with fault protection Miswiring, and Connector Failures on the RS-232 line interface. This allows shorts of the 70V Fault Protection transmitter outputs and receiver inputs to voltages in the Overvoltage Current Limiting 70V range without adversely affecting the MAX13223E. Current Protection at Transmitter Outputs Thermal Shutdown Protection The MAX13223E achieves 1A supply current using Flexible Power Requirements Simplify Design Maxims AutoShutdown feature. The MAX13223E automatically enters a low-power shutdown mode when +3.0V to +5.5V Single Supply Voltage True RS-232 Performance (Up to 250kbps) Even the RS-232 cable is disconnected or the receivers are inactive. The device turns on again when a valid from +3.0V Supply Voltage transition at any receiver input is sensed. A proprietary, AutoShutdown Simplifies Power Savings high-efficiency, dual charge-pump power supply and a Automatically Enters Shutdown Mode if RS-232 low-dropout transmitter combine to deliver true RS-232 Cable is Disconnected or Receivers are Inactive performance from a single +3.0V to +5.5V supply. Automatically Activates from Shutdown When Any The MAX13223E has two receivers and two drivers and is Valid Transition is Sensed 1A Typical Shutdown Current guaranteed to run at data rates of 250kbps for one trans- mitter switching while maintaining RS-232 output levels. Ordering Information The MAX13223E operates from input voltages ranging from PART TEMP RANGE PIN-PACKAGE +3.0V to +5.5V and is available in a 20-pin, 6.5mm x 4.4mm, MAX13223EEUP+ -40C to +85C 20 TSSOP TSSOP package. The MAX13223E is specified over the +Denotes a lead(Pb)-free/RoHS-compliant package. -40C to +85C temperature range. Typical Operating Circuit Applications V CC Telematics Equipment C BYPASS Base Stations 0.1F Utility Meters V CC V+ Industrial Equipment C1+ C3 C1 Telecomm Equipment C1- MAX13223E V- POS Terminal Equipment C2+ C4 C2 C2- T1OUT T1IN RS-232 TTL/CMOS INPUTS OUTPUTS T2IN T2OUT R1OUT R1IN 5k TTL/CMOS RS-232 OUTPUTS INPUTS R2OUT R2IN 5k TO POWER- EN INVALID MANAGEMENT UNIT V FORCEON FORCEOFF CC GND AutoShutdown is a trademark of Maxim Integrated Products, Inc. 19-4585 Rev 3 2/15MAX13223E 70V Fault-Protected, 3.0V to 5.5V, 2Tx/2Rx RS-232 Transceiver Absolute Maximum Ratings (Voltages referenced to GND.) Short-Circuit Duration V .......................................................................-0.3V to +7.0V T1OUT, T2OUT ......................................................Continuous CC V+ .........................................................................-0.3V to +7.0V Continuous Power Dissipation (T = +70C) A V- .........................................................................+0.3V to -7.0V TSSOP (derate 13.6mW/C above +70C) ..............1084mW V+ to V- ..............................................................................+13V Operating Temperature Range .......................... -40C to +85C Input Voltages Junction Temperature ......................................................+150C T1IN, T2IN, EN, FORCEON, FORCEOFF ......-0.3V to +6.0V Storage Temperature Range ........................... -65C to +150C R1IN, R2IN .....................................................................70V Lead Temperature (soldering, 10s) .................................+300C Output Voltages Soldering Temperature (reflow) .......................................+260C T1OUT, T2OUT ..............................................................70V R1OUT, R2OUT, INVALID ....................... -0.3V to (V + 0.3V) CC 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. (Note 1) Package Thermal Characteristics TSSOP Junction-to-Ambient Thermal Resistance ( ) .......73.8C/W JA Junction-to-Case Thermal Resistance ( ) ...............20C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = +3.0V to +5.5V, T = -40C to +85C, unless otherwise noted. Typical values are at V = +3.3V, T = +25C, unless other- CC A CC A wise noted. For V = +3.0V to +3.6V, C1 = C2 = C3 = 0.1F, C4 = 1F. For V = +4.5V to +5.5V, C1 = 47nF, C2 = C3 = 330nF, CC CC C4 = 1F.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 3.0 5.5 V CC AutoShutdown disabled (FORCEON = Supply Current 8 15 mA FORCEOFF = V ), no load CC FORCEON = GND, FORCEOFF = V , CC Supply Current AutoShutdown I 1.0 10 A ASD R1IN and R2IN idle, T1IN and T2IN idle Supply Current Shutdown I FORCEOFF = GND 1.0 10 A SD LOGIC INPUTS T IN, EN, FORCEON, FORCEOFF, Input-Logic Low V 0.8 V T IN,LO V = +3.3V to +3.6V, +5.0V to +5.5V CC V = +3.3V 2.0 T IN, FORCEON, CC Input-Logic High V V T IN,HI FORCEOFF, EN V = +5.0V 2.4 CC Transmitter Input Hysteresis V 0.5 V TX,INHYS Input Leakage Current I T IN, EN, FORCEON, FORCEOFF 0.01 1 A IN,LKG RECEIVER OUTPUTS Output Leakage Current I EN = V 0.05 10 A RX,OUT,LKG CC Output-Voltage Low V I = 1.6mA 0.4 V RX,OUT,LO OUT V - V - CC CC Output-Voltage High V I = -1.0mA V RX,OUT,HI OUT 0.6 0.2 Maxim Integrated 2 www.maximintegrated.com