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® SP3222E/3232E True +3.0V to +5.5V RS-232 Transceivers FEATURES ■ Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply ■ Minimum 120Kbps Data Rate Under Full Load ■ 1µA Low-Power Shutdown with Receivers Active (SP3222E) ■ Interoperable with RS-232 down to +2.7V power source ■ Enhanced ESD Specifications: ±15kV Human Body Model ±15kV IEC1000-4-2 Air Discharge ±8kV IEC1000-4-2 Contact Discharge EN C1+ V+ C1- C2+ C2- V- T2OUT R2IN 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 SHDN VCC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT SP3222E DIP/SO Now Available in Lead Free Packaging Note: See page 6 for other pinouts DESCRIPTION The SP3222E/3232E series is an RS-232 transceiver solution intended for portable or hand- held applications such as notebook or palmtop computers. The SP3222E/3232E series has a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3222E/3232E series to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V. The SP3222E/3232E are 2-driver/2-receiver devices. This series is ideal for portable or hand-held applications such as notebook or palmtop computers. The ESD tolerance of the SP3222E/3232E devices are over ±15kV for both Human Body Model and IEC1000-4-2 Air discharge test methods. The SP3222E device has a low-power shutdown mode where the devices' driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1µA. SELECTION TABLE LEDOM seilppuSrewoP 232-SR srevirD srevirD srevirD srevirD srevirD 232-SR lanretxE srevieceR srevieceR srevieceR srevieceR srevieceR stnenopmoC stnenopmoC stnenopmoC stnenopmoC stnenopmoC nwodtuhS 2223PS V5.5+otV0.3+ 2323PS V5.5+otV0.3+ 2 2 2 2 4 4 seY oN LTT etatS-3 etatS-3 etatS-3 etatS-3 etatS-3 seY oN fo.oN sniP sniP sniP sniP sniP 02,81 61 Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 1

ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability and cause permanent damage to the device. VCC................................................................-0.3V to +6.0V V+ (NOTE 1)................................................-0.3V to +7.0V V- (NOTE 1)................................................+0.3V to -7.0V V+ + |V-| (NOTE 1)....................................................+13V ICC (DC VCC or GND current).................................±100mA Input Voltages TxIN, EN ................................................... -0.3V to +6.0V RxIN .......................................................................... ±15V Output Voltages TxOUT ...................................................................... ±15V RxOUT ........................................... -0.3V to (VCC + 0.3V) Short-Circuit Duration TxOUT ............................................................ Continuous Storage Temperature .............................. -65°C to +150°C Power Dissipation Per Package 20-pin SSOP (derate 9.25mW/oC above +70oC) ..... 750mW 18-pin PDIP (derate 15.2mW/oC above +70oC) .... 1220mW 18-pin SOIC (derate 15.7mW/oC above +70oC) ... 1260mW 20-pin TSSOP (derate 11.1mW/oC above +70oC) .. 890mW 16-pin SSOP (derate 9.69mW/oC above +70oC) ..... 775mW 16-pin PDIP (derate 14.3mW/oC above +70oC) .... 1150mW 16-pin Wide SOIC (derate 11.2mW/oC above +70oC) 900mW 16-pin TSSOP (derate 10.5mW/oC above +70oC) .. 850mW 16-pin nSOIC (derate 13.57mW/°C above +70°C) .. 1086mW NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.0V with TAMB = TMIN to TMAX RETEMARAP .NIM .PYT .XAM STINU SNOITIDNOC ELECTRICAL CHARACTERISTICS SCITSIRETCARAHCCD tnerruCylppuS tnerruCylppuSnwodtuhS 3.0 0.1 STUPTUOREVIECERDNASTUPNICIGOL WOLdlohserhTcigoLtupnI HGIHdlohserhTcigoLtupnI 0.2 4.2 tnerruCegakaeLtupnI tnerruCegakaeLtuptuO WOLegatloVtuptuO HGIHegatloVtuptuO STUPTUOREVIRD 10.0± 50.0± V CC 6.0- V CC 1.0- gniwSegatloVtuptuO 0.5± 4.5± 0.1 01 8.0 0.1± 01± 4.0 ecnatsiseRtuptuO 003 tnerruCtiucriC-trohStuptuO tnerruCegakaeLtuptuO 53± 07± 06± 001± 52± Am µA V V µA µA V V V Ω Am Am µA T,daolon BMA 52+= o V,C V3.3= CC 52+= ,DNG=NDHS T BMA o V,C CC V3.3+= 2etoN,NDHS,NE,NIxT 2etoN,V3.3= 2etoN,V0.5= V CC V CC ,NDHS,NE,NIxT delbasidsreviecer I TUO I TUO Am6.1= Am0.1-= T BMA 52+= oC k3 Ω T BMA ,stuptuorevirdllatadnuorgotdaol 52+= oC T,V0=-V=+V= TUO = + V2 V0= V CC V TUO V TUO = + V51 V TUO = + V,V21 delbasidsrevird,V5.5otV0= CC Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 2

Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.0V with TAMB = TMIN to TMAX. Typical Values apply at VCC = +3.3V or +5.0V and TAMB = 25oC. RETEMARAP .NIM .PYT .XAM STINU SNOITIDNOC ELECTRICAL CHARACTERISTICS STUPNIREVIECER egnaRegatloVtupnI WOLdlohserhTtupnI HGIHdlohserhTtupnI siseretsyHtupnI ecnatsiseRtupnI 51- 6.0 8.0 3 2.1 5.1 5.1 8.1 3.0 5 51+ 4.2 4.2 7 SCITSIRETCARAHCGNIMIT etaRataDmumixaM 021 532 yaleDnoitagaporPrevirD yaleDnoitagaporPrevieceR emiTelbanEtuptuOrevieceR emiTelbasiDtuptuOrevieceR wekSrevirD wekSrevieceR etaRwelSnoigeR-noitisnarT 0.1 0.1 3.0 3.0 002 002 001 002 005 0001 03 V V V V kΩ spbk µs µs µs sn sn sn sn /V µs NOTE 2: Driver input hysteresis is typically 250mV. V CC V CC V3.3= V0.5= V CC V CC V3.3= V0.5= k3= Ω C, gnihctiwsrevirdeno,Fp0001= L RL t LHP R, t HLP R, L L K3= Ω C, K3= Ω C, L L Fp0001= Fp0001= LHP t t HLP C,TUOxRotNIxR, L C,TUOxRotNIxR, L Fp051= Fp051= t| t| t- HLP T,| BMA 52= oC LHP t- HLP | LHP K3= Ω T, L R,V3.3= V CC V0.3+otV0.3-morfnekatstnemerusaem V0.3-otV0.3+ro 52= o ,C BMA Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 3

Unless otherwise noted, the following performance characteristics apply for VCC = +3.3V, 120kbps data rates, all drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and TAMB = +25°C. TYPICAL PERFORMANCE CHARACTERISTICS ] V [ e g a t l o V t u p t u O r e t t i m s n a r T 6 4 2 0 -2 -4 -6 0 500 1000 1500 2000 Vout+ Vout- Load Capacitance [pF] ] s µ V / [ e t a R w e S l 14 12 10 8 6 4 2 0 +Slew -Slew 0 500 1000 1500 2000 2330 Load Capacitance [pF] Figure 1. Transmitter Output Voltage VS. Load Capacitance for the SP3222 and the SP3232 Figure 2. Slew Rate VS. Load Capacitance for the SP3222 and the SP3232 118KHz 60KHz 10KHz 50 45 40 35 30 25 20 15 10 5 0 ] A m [ t n e r r u C y l p p u S 0 500 1000 1500 2000 2330 Load Capacitance [pF] Figure 3. Supply Current VS. Load Capacitance when Transmitting Data for the SP3222 and the SP3232 Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 4

EMAN NOITCNUF NE .noitarepolamronrofWOLcigolylppA.elbanErevieceR .)etatsZ-hgih(stuptuoreviecerehtelbasidotHGIHcigolylppA +1C .roticapacpmup-egrahcrelbuodegatlovehtfolanimretevitisoP +V -1C +2C -2C .pmupegrahcehtybdetarenegV5.5+ .roticapacpmup-egrahcrelbuodegatlovehtfolanimretevitageN .roticapacpmup-egrahcgnitrevniehtfolanimretevitisoP .roticapacpmup-egrahcgnitrevniehtfolanimretevitageN -V .pmupegrahcehtybdetarenegV5.5- TUO1T .tuptuorevird232-SR TUO2T .tuptuorevird232-SR NI1R .tupnireviecer232-SR NI2R .tupnireviecer232-SR TUO1R .tuptuoreveicerSOMC/LTT TUO2R .tuptuoreveicerSOMC/LTT NI1T .tupnirevirdSOMC/LTT NI2T .tupnirevirdSOMC/LTT DNG .dnuorG V CC egatlovylppusV5.5+otV0.3+ NDHS .noitarepoecivedlamronrofHGIHevirD.tupnIlortnoCnwodtuhS -noehtdna)tuptuoZ-hgih(srevirdehtnwodtuhsotWOLevirD .ylppusrewopdraob .C.N .tcennoCoN Table 1. Device Pin Description - 41,11 REBMUNNIP E2223PS OS/PID -/POSS POSST POSST POSST POSST POSST E2323PS 1 2 3 4 5 6 7 51 8 41 9 31 01 21 11 61 71 81 1 2 3 4 5 6 7 71 8 61 9 51 01 31 21 81 91 02 - 1 2 3 4 5 6 41 7 31 8 21 9 11 01 51 61 - - Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 5

SP3222E EN C1+ V+ C1- C2+ C2- V- T2OUT R2IN 1 2 3 4 5 6 7 8 9 R2OUT 10 20 19 18 17 16 15 14 13 12 11 SHDN VCC GND T1OUT R1IN R1OUT N.C. T1IN T2IN N.C. EN C1+ V+ C1- C2+ C2- V- T2OUT R2IN 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 SHDN VCC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT SP3222E DIP/SO SSOP/TSSOP Figure 4. Pinout Configurations for the SP3222E C1+ V+ C1- C2+ C2- V- T2OUT R2IN 1 2 3 4 5 6 7 8 SP3232E 16 15 14 13 12 11 10 VCC GND T1OUT R1IN R1OUT T1IN T2IN 9 R2OUT Figure 5. Pinout Configuration for the SP3232E Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 6

C5 C1 C2 + + + 0.1µF 0.1µF 0.1µF LOGIC INPUTS LOGIC OUTPUTS VCC 19 VCC SP3222E SSOP TSSOP 2 C1+ 4 5 C1- C2+ 6 C2- 13 T1IN 12 T2IN 3 V+ 7 V- + 0.1µF *C3 C4 0.1µF + C5 C1 C2 + + + 0.1µF 0.1µF 0.1µF T1OUT 17 T2OUT 8 RS-232 OUTPUTS LOGIC INPUTS VCC 17 VCC SP3222E DIP/SO 2 C1+ 4 5 C1- C2+ 6 C2- 12 T1IN 11 T2IN 3 V+ 7 V- + 0.1µF *C3 C4 0.1µF + T1OUT T2OUT 15 8 RS-232 OUTPUTS 15 R1OUT R1IN 16 13 R1OUT R1IN 14 10 R2OUT 1 EN 5kΩ 5kΩ R2IN 9 SHDN 20 RS-232 INPUTS LOGIC OUTPUTS GND 18 *can be returned to either VCC or GND 10 R2OUT 1 EN RS-232 INPUTS 5kΩ 5kΩ R2IN 9 SHDN 18 GND 16 *can be returned to either VCC or GND Figure 6. SP3222E Typical Operating Circuits C5 C1 C2 + + + 0.1µF 0.1µF 0.1µF LOGIC INPUTS LOGIC OUTPUTS VCC 16 VCC SP3232E 1 C1+ 3 4 C1- C2+ 5 C2- 11 T1IN 10 T2IN 2 6 V+ V- + 0.1µF *C3 C4 0.1µF + T1OUT T2OUT 14 7 RS-232 OUTPUTS 12 R1OUT R1IN 13 9 R2OUT 5kΩ 5kΩ R2IN 8 RS-232 INPUTS GND 15 *can be returned to either VCC or GND Figure 7. SP3232E Typical Operating Circuit Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 7

DESCRIPTION The SP3222E/3232E transceivers meet the EIA/ TIA-232 and V.28/V.24 communication proto- cols and can be implemented in battery-pow- ered, portable, or hand-held applications such as notebook or palmtop computers. The SP3222E/ 3232E devices all feature Sipex's proprietary on-board charge pump circuitry that generates 2 x VCC for RS-232 voltage levels from a single +3.0V to +5.5V power supply. This series is ideal for +3.3V-only systems, mixed +3.3V to +5.5V systems, or +5.0V-only systems that re- quire true RS-232 performance. The SP3222E/ 3232E series have drivers that operate at a typi- cal data rate of 235Kbps fully loaded. The SP3222E and SP3232E are 2-driver/2-re- ceiver devices ideal for portable or hand-held applications. The SP3222E features a 1µA shutdown mode that reduces power consump- tion and extends battery life in portable systems. Its receivers remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current. THEORY OF OPERATION The SP3222E/3232E series are made up of three basic circuit blocks: 1. Drivers, 2. Receivers, and 3. the Sipex proprietary charge pump. Drivers The drivers are inverting level transmitters that convert TTL or CMOS logic levels to ±5.0V EIA/TIA-232 levels inverted relative to the in- put logic levels. Typically, the RS-232 output voltage swing is ±5.5V with no load and at least ±5V minimum fully loaded. The driver outputs are protected against infinite short-circuits to ground without degradation in reliability. Driver outputs will meet EIA/TIA-562 levels of ±3.7V with supply voltages as low as 2.7V. The drivers typically can operate at a data rate of 235Kbps. The drivers can guarantee a data rate of 120Kbps fully loaded with 3KΩ in parallel with 1000pF, ensuring compatibility with PC-to-PC communication software. The slew rate of the driver output is internally limited to a maximum of 30V/µs in order to meet the EIA standards (EIA RS-232D 2.1.7, Para- graph 5). The transition of the loaded output from HIGH to LOW also meets the monotonic- ity requirements of the standard. The SP3222E/3232E drivers can maintain high data rates up to 235Kbps fully loaded. Figure 8 shows a loopback test circuit used to test the RS-232 drivers. Figure 9 shows the test results of the loopback circuit with all drivers active at 120Kbps with RS-232 loads in parallel with 1000pF capacitors. Figure 10 shows the test results where one driver was active at 235Kbps and all drivers loaded with an RS-232 receiver in parallel with a 1000pF capacitor. A solid RS-232 data transmission rate of 120Kbps provides compatibility with many designs in personal computer peripherals and LAN applications. The SP3222E driver's output stages are turned off (tri-state) when the device is in shutdown mode. When the power is off, the SP3222E device permits the outputs to be driven up to ±12V. The driver's inputs do not have pull-up resistors. Designers should connect unused inputs to VCC or GND. In the shutdown mode, the supply current falls to less than 1µA, where SHDN = LOW. When the SP3222E device is shut down, the device's driver outputs are disabled (tri-stated) and the charge pumps are turned off with V+ pulled down to VCC and V- pulled to GND. The time required to exit shutdown is typically 100µs. Connect SHDN to VCC if the shutdown mode is not used. SHDN has no effect on RxOUT or RxOUTB. As they become active, the two driver outputs go to opposite RS-232 levels where one driver input is HIGH and the other LOW. Note that the drivers are enabled only when the magnitude of V- exceeds approximately 3V. Date: 02/24/05 SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2005 Sipex Corporation 8

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