SP3220E

SP3220E SIPEX | Alldatasheet

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11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2000 Sipex Corporation +3.0V to +5.5V RS-232 Driver/Receiver Pair SP3220E

DESCRIPTION

■ Meets True RS-232 Protocol Operation From A +3.0V to +5.5V Power Supply ■ Minimum 120 Kbps Data Rate Under Full Load ■ 1µA Low-Power Shutdown With Receivers Active ■ Interoperable With RS-232 Down To +2.7V Power Source ■ Pin-Compatible With The MAX3221E Device Without The AUTO ON-LINE ® Feature ■ Enhanced ESD Specifications: +15kV Human Body Model +15kV IEC1000-4-2 Air Discharge +8kV IEC1000-4-2 Contact Discharge The SP3220E device is an RS-232 driver/receiver solution intended for portable or hand-held applications such as notebook or palmtop computers. The SP3220E device has a high- efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3220E device to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V. The ESD tolerance of the SP3220E device is over +15kV for both Human Body Model and IEC1000-4-2 Air discharge test methods. The SP3220E device has a low-power shutdown mode where the driver outputs and charge pumps are disabled. During shutdown, the supply current falls to less than 1µA. SP3220E GND T1IN T1OUT C1+ C1- C2+ C2- VCC 0.1µF 0.1µF 0.1µF *C3 0.1µF 0.1µF

13 RS-232

5kΩ R1INR1OUT9 8LOGIC OUTPUTS *can be returned to either VCC or GND EN1 SHDN 16

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2002 Sipex Corporation NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. 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. V I Input Voltages +15V Output Voltages Short-Circuit Duration Power Dissipation Per Package 16-pin Wide SOIC (derate 11.2mW/oC above+70oC) 900mW SPECIFICATIONS 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. XAMS TINUS NOITIDNOC SCITSIRETCARAHCCD tnerruCylppuS3 .00 .1A mT ,daolon BMA 52+= o V,C CC V3.3= tnerruCylppuSnwodtuhS0 .10 1 µA, DNG=NDHST BMA 52+= o V,C CC V3.3+= STUPTUOREVIECERDNASTUPNICIGOL WOLdlohserhTcigoLtupnI8 .0V 2 etoN,NDHS,NE,NIxT HGIHdlohserhTcigoLtupnI0 .2 4.2 VV CC 2etoN,V3.3= V CC 2etoN,V0.5= tnerruCegakaeLtupnI1 0.0±0 .1± µA, NDHS,NE,NIxTT BMA 52+= oC tnerruCegakaeLtuptuO5 0.0±0 1± µAd elbasidsreviecer WOLegatloVtuptuO4 .0V I TUO Am6.1= HGIHegatloVtuptuOV CC 6.0-V CC 1.0-V I TUO Am0.1-= STUPTUOREVIRD gniwSegatloVtuptuO0 .5±4 .5±V k 3 Ω ,stuptuorevirdllatadnuorgotdaol T BMA 52+= oC ecnatsiseRtuptuO0 03 Ω V CC T,V0=-V=+V= TUO =+ V2 tnerruCtiucriC-trohStuptuO5 3± 07± 06± 001± Am Am V TUO V0= V TUO =+ V51 tnerruCegakaeLtuptuO5 2± µAV TUO =+ V,V21 CC delbasidsrevird,V5.5otV0=

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2000 Sipex Corporation SPECIFICATIONS (continued) 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. NOTE 2: Driver input hysteresis is typically 250mV. RETEMARAP. NIM. PYT. XAMS TINUS NOITIDNOC STUPNIREVIECER egnaRegatloVtupnI5 1-5 1+V WOLdlohserhTtupnI6 .0 8.0 2.1 5.1 VV CC V3.3= V CC V0.5= HGIHdlohserhTtupnI5 .1 8.1 4.2 4.2 VV CC V3.3= V CC V0.5= siseretsyHtupnI3 .0V ecnatsiseRtupnI3 5 7 k Ω SCITSIRETCARAHCGNIMIT etaRataDmumixaM0 215 32s pbkR L k3= Ω C, L gnihctiwsrevirdeno,Fp0001= yaleDnoitagaporPrevirD0 .1 0.1 µs µs t LHP R, L K3= Ω C, L Fp0001= t HLP R, L K3= Ω C, L Fp0001= yaleDnoitagaporPrevieceR3 .0 3.0 µst LHP C,TUOxRotNIxR, L Fp051= t HLP C,TUOxRotNIxR, L Fp051= emiTelbanEtuptuOrevieceR0 02s n emiTelbasiDtuptuOrevieceR0 02s n wekSrevirD0 010 05s nt | LHP t- HLP T,| BMA 52= oC wekSrevieceR0 020 001s nt | LHP t- HLP | etaRwelSnoigeR-noitisnarT0 3/ V µsV CC R,V3.3= L K3= Ω T, BMA 52= o ,C V0.3+otV0.3-morfnekatstnemerusaem V0.3-otV0.3+ro

Table 1. Device Pin Description

Figure 4. Pinout Configurations for the SP3220E

Figure 5. SP3220E Typical Operating Circuits

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2002 Sipex Corporation The SP3220E device meets the EIA/TIA-232 and V.28/V.24 communication protocols and can be implemented in battery-powered, portable, or hand-held applications such as notebook or palmtop computers. The SP3220E device features Sipex's proprietary on-board charge pump circuitry that generates 2 x V CC 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 +3.0V to +5.5V systems, or +5.0V-only systems that require true RS-232 performance. The SP3220E device has a driver that operates at a typical data rate of 235Kbps fully loaded. The SP3220E is a 1-driver/1-receiver device ideal for portable or hand-held applications. The SP3220E features a 1µA shutdown mode that reduces power consumption 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 SP3220E device is 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 input 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, Paragraph 5). The transition of the loaded output from HIGH to LOW also meets the monotonicity requirements of the standard. The SP3220E driver can maintain high data rates up to 235Kbps fully loaded. Figure 6 shows a loopback test circuit used to test the RS-232 driver. Figure 7 shows the test results of the loopback circuit with the driver active at 120Kbps with an RS-232 load in parallel with a 1000pF capacitor. Figure 8 shows the test results where the driver was active at 235Kbps and 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 SP3220E driver's output stage is turned off (high-Z) when the device is in shutdown mode. When the power is off, the SP3220E device permits the outputs to be driven up to +12V. The driver's input does not have pull-up resistors. Designers should connect an unused input to V CC or GND. In the shutdown mode, the supply current falls to less than 1µA, where SHDN = LOW. When the SP3220E device is shut down, the device's driver output is disabled (high-Z) and the charge pump is turned off with V+ pulled down to V CC and V- pulled to GND. The time required to exit shutdown is typically 100µs. Connect SHDN to V CC if the shutdown mode is not used. SHDN has no effect on RxOUT. Note that the driver is enabled only when the magnitude of V- exceeds approximately 3V.

Table 2. Truth Table Logic for Shutdown and outputs can be found in Table 2. have a typical hysteresis margin of 300mV. CC ) over the +3.0V to +5.5V range. bypass capacitor at C5 (refer to Figures 5). capacitors as close to the IC as possible. regulated to a minimum voltage of -5.5V. to VCC and the negative side is connected to GND. voltage potential across C2 is 2 times VCC .

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2000 Sipex Corporation Phase 4 — V DD transfer — The fourth phase of the clock connects the negative terminal of C2 to GND, and transfers this positive generated voltage across C 2 to C4, the VDD storage capacitor. This voltage is regulated to +5.5V. At this voltage, the internal oscillator is disabled. Simultaneous with the transfer of the voltage to C 4, the positive side of capacitor C1 is switched to VCC and the negative side is connected to GND, allowing the charge pump cycle to begin again. The charge pump cycle will continue as long as the operational conditions for the internal oscillator are present. Since both V + and V– are separately generated from VCC ; in a no–load condition V+ and V– will be symmetrical. Older charge pump approaches that generate V – from V+ will show a decrease in the magnitude of V– compared to V+ due to the inherent inefficiencies in the design. The clock rate for the charge pump typically operates at 250kHz. The external capacitors can be as low as 0.1µF with a 16V breakdown voltage rating. ESD Tolerance The SP3220E device incorporates ruggedized ESD cells on all driver output and receiver input pins. The ESD structure is improved over our previous family for more rugged applications and environments sensitive to electro-static discharges and associated transients. The improved ESD tolerance is at least +15kV without damage nor latch-up. There are different methods of ESD testing applied: a) MIL-STD-883, Method 3015.7 b) IEC1000-4-2 Air-Discharge c) IEC1000-4-2 Direct Contact The Human Body Model has been the generally accepted ESD testing method for semiconductors. This method is also specified in MIL-STD-883, Method 3015.7 for ESD testing. The premise of this ESD test is to simulate the human body’s potential to store electro-static energy and discharge it to an integrated circuit. The simulation is performed by using a test model as shown in Figure 14. This method will test the IC’s capability to withstand an ESD transient during normal handling such as in manufacturing areas where the ICs tend to be handled frequently. The IEC-1000-4-2, formerly IEC801-2, is generally used for testing ESD on equipment and systems. For system manufacturers, they must guarantee a certain amount of ESD protection since the system itself is exposed to the outside environment and human presence. The premise with IEC1000-4-2 is that the system is required to withstand an amount of static electricity when ESD is applied to points and surfaces of the equipment that are accessible to personnel during normal usage. The transceiver IC receives most of the ESD current when the ESD source is applied to the connector pins. The test circuit for IEC1000-4-2 is shown on Figure 15. There are two methods within IEC1000-4-2, the Air Discharge method and the Contact Discharge method. With the Air Discharge Method, an ESD voltage is applied to the equipment under test (EUT) through air. This simulates an electrically charged person ready to connect a cable onto the rear of the system only to find an unpleasant zap just before the person touches the back panel. The high energy potential on the person discharges through an arcing path to the rear panel of the system before he or she even touches the system. This energy, whether discharged directly or through air, is predominantly a function of the discharge current rather than the discharge voltage. Variables with an air discharge such as approach speed of the object carrying the ESD potential to the system and humidity will tend to change the discharge current. For example, the rise time of the discharge current varies with the approach speed.

Figure 16. ESD Test Waveform for IEC1000-4-2 Table 3. Transceiver ESD Tolerance Levels

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2000 Sipex Corporation D EH PACKAGE: PLASTIC SHRINK SMALL OUTLINE (SSOP) DIMENSIONS (Inches) Minimum/Maximum (mm) 20–PIN A Ø LBe A B D E e H L Ø 0.068/0.078 (1.73/1.99) 0.002/0.008 (0.05/0.21) 0.010/0.015 (0.25/0.38) 0.278/0.289 (7.07/7.33) 0.205/0.212 (5.20/5.38)

0.0256 BSC

(0.65 BSC) 0.301/0.311 (7.65/7.90) 0.022/0.037 (0.55/0.95) 0°/8° (0°/8°) 24–PIN 0.068/0.078 (1.73/1.99) 0.002/0.008 (0.05/0.21) 0.010/0.015 (0.25/0.38) 0.317/0.328 (8.07/8.33) 0.205/0.212 (5.20/5.38) (0.65 BSC) 0.301/0.311 (7.65/7.90) 0.022/0.037 (0.55/0.95) 0°/8° (0°/8°) 28–PIN 0.068/0.078 (1.73/1.99) 0.002/0.008 (0.05/0.21) 0.010/0.015 (0.25/0.38) 0.397/0.407 (10.07/10.33) 0.205/0.212 (5.20/5.38) (0.65 BSC) 0.301/0.311 (7.65/7.90) 0.022/0.037 (0.55/0.95) 0°/8° (0°/8°) 16–PIN 0.068/0.078 (1.73/1.99) 0.002/0.008 (0.05/0.21) 0.010/0.015 (0.25/0.38) 0.239/0.249 (6.07/6.33) 0.205/0.212 (5.20/5.38) (0.65 BSC) 0.301/0.311 (7.65/7.90) 0.022/0.037 (0.55/0.95) 0°/8° (0°/8°)

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2002 Sipex Corporation D EH PACKAGE: PLASTIC SMALL OUTLINE (SOIC) DIMENSIONS (Inches) Minimum/Maximum (mm) A Ø LBe A B D E e H L Ø 16–PIN 0.090/0.104 (2.29/2.649) 0.004/0.012 (0.102/0.300) 0.013/0.020 (0.330/0.508) 0.398/0.413 (10.10/10.49) 0.291/0.299 (7.402/7.600)

0.050 BSC

(1.270 BSC) 0.394/0.419 (10.00/10.64) 0.016/0.050 (0.406/1.270) 0°/8° (0°/8°) 18–PIN 0.090/0.104 (2.29/2.649)) 0.004/0.012 (0.102/0.300) 0.013/0.020 (0.330/0.508) 0.447/0.463 (11.35/11.74) 0.291/0.299 (7.402/7.600) (1.270 BSC) 0.394/0.419 (10.00/10.64) 0.016/0.050 (0.406/1.270) 0°/8° (0°/8°)

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2000 Sipex Corporation PACKAGE: PLASTIC THIN SMALL OUTLINE (TSSOP) DIMENSIONS in inches (mm) Minimum/Maximum 16–PIN A Ø LBe A B D E e L Ø - /0.043 (- /1.10) 0.002/0.006 (0.05/0.15) 0.007/0.012 (0.19/0.30) 0.193/0.201 (4.90/5.10) 0.169/0.177 (4.30/4.50)

0.026 BSC

(0.65 BSC)

0.126 BSC

(3.20 BSC) 0.020/0.030 (0.50/0.75) 0°/8° D - /0.043 (- /1.10) 0.002/0.006 (0.05/0.15) 0.007/0.012 (0.19/0.30) 0.252/0.260 (6.40/6.60) 0.169/0.177 (4.30/4.50) (0.65 BSC) (3.20 BSC) 0.020/0.030 (0.50/0.75) 0°/8° 20–PIN E

11/07/02 SP3220E True +3.0 to +5.0V RS-232 Transceivers © Copyright 2002 Sipex Corporation

ORDERING INFORMATION

Model Temperature Range Package Type Corporation SIGNAL PROCESSING EXCELLENCE Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others. Sipex Corporation Headquarters and Sales Office

233 South Hillview Drive

Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sales Office

22 Linnell Circle

Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: sales@sipex.com