® SP385E Enhanced +3V or +5V RS-232 Line Driver/Receiver N/C 1 18 ON/OFF C1+ 2 17 VCC V+ 3 16 GND C1 - 4 15 T 1 OUT C 2+ 5 14 R 1 IN 13 R 1 OUT SP385E FEATURES ■ Operates from 3.3V or 5V Power Supply ■ Meets All EIA-232D and V.28 Specifications at 5V ■ Meets EIA-562 Specifications at 3.3V ■ Two Drivers and Receivers ■ Operates with 0.1µF to 10µF Capacitors ■ High Data Rate — 120kbps Under Load ■ Low Power Shutdown ≤1µA ■ 3-State TTL/CMOS Receiver Outputs ■ Low Power CMOS — 5mA Operation ■ Improved ESD Specifications: +15kV Human Body Model +15kV IEC1000-4-2 Air Discharge +8kV IEC1000-4-2 Contact Discharge C 2- 6 V- 7 12 T 1 IN T2 OUT 8 11 T 2 IN R2 IN 9 10 R 2 OUT Now Available in Lead Free Packaging DESCRIPTION Sipex's SP385E is an enhanced version of the SP200 family of RS232 line drivers/receivers. The SP385E offers +3.3V operation for EIS-562 and EIA-232 applications. The SP385E features offered maintains the same performance features offered in its predecessors. The SP385E is available in plastic SOIC or SSOP packages operating over the commercial and industrial temperature ranges. The SP385E is pin compatible to the LTC1385 EIA-562 transceiver with the exception that the drivers are disabled with the ON/OFF pin. TYPICAL APPLICATION CIRCUIT RS232 OUTPUTS CHARGE PUMP T1 RS232 INPUTS T2 R1 R2 TTL/CMOS INPUTS TTL/CMOS OUTPUTS Date: 03/08/05 SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 1 © Copyright 2005 Sipex Corporation ABSOLUTE MAXIMUM RATINGS Output Voltages TOUT ............................................................................................................. (V+, +0.3V) to (V-, -0.3V) ROUT ......................................................................................................................... -0.3V to (Vcc +0.3V) Short Circuit Duration TOUT .................................................................................................................................................. Continuous Power Dissipation CERDIP ................................................................................... 675mW (derate 9.5mW/°C above +70°C) Plastic DIP ............................................................................... 375mW (derate 7mW/°C above +70°C) Small Outline ............................................................................ 375mW (derate 7mW/°C above +70°C) This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Vcc .......................................................................................................................................................................... +6V V+ ............................................................................................................................. (Vcc-0.3V) to +13.2V V- ....................................................................................................................................................................... 13.2V Input Voltages TIN .................................................................................................................................. -0.3 to (Vcc +0.3V) RIN ..................................................................................................................................................................... ±15V ELECTRICAL CHARACTERISTICS VCC = +3.3V ±10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted. PARAMETERS TTL INPUT Logic Threshold Low High Logic Pullup Current Maximum Data Rate TTL OUTPUT TTL/CMOS Output Voltage, Low Voltage, High Leakage Current; TA = +25°C VCC EIA-562 OUTPUT Output Voltage Swing MIN. TYP. MAX. UNITS 0.8 Volts Volts µA kbps TIN ; ON/OFF Vcc = 3.3V TIN ; ON/OFF Vcc = 3.3V TIN = 0V CL = 2500pF, RL= 3kΩ Volts Volts µA IOUT = 3.2mA; Vcc = 3.3V IOUT = -1.0mA ON/OFF=0V, 0V ≤ VOUT ≤ ±4.2 Volts ±10 Ω mA All transmitter outputs loaded with 3kΩ to ground VCC = 0V; VOUT = ±2V Infinite duration 2.0 15 200 120 0.5 2.4 0.05 ±3.7 Power-Off Output Resistance 300 Output Short Circuit Current EIA-562 INPUT Voltage Range -15 Voltage Threshold Low 0.8 High Hysteresis 0.2 Resistance 3 DYNAMIC CHARACTERISTICS Driver Propagation Delay Receiver Propagation Delay Instantaneous Slew Rate 1.2 1.7 0.5 5 ±10 +15 Volts 2.4 1.0 7 Volts Volts Volts kΩ VCC = 3.3V, TA = +25°C VCC = 3.3V, TA = +25°C VCC = 3.3V, TA = +25°C VIN = 15V to –15V 30 µs µs V/µs TTL to RS-562 RS-562 to TTL CL = 10pF, RL= 3kΩ - 7kΩ; TA = +25°C CL = 2500pF, RL= 3kΩ; measured from +2V to -2V or -2V to +2V 4.0 1.5 Transition Region Slew Rate 10 Output Enable Time Output Disable Time POWER REQUIREMENTS VCC Power Supply Current 3.3V 3kΩ 300 1000 3 6 8 mA Shutdown Supply Current 0.010 5 µA Date: 03/08/05 CONDITIONS V/µs ns ns SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 2 No load, TA= +25°C; VCC = mA All transmitters RL = TA = +25°C VCC = 3.3V, TA = +25°C © Copyright 2005 Sipex Corporation ELECTRICAL CHARACTERISTICS VCC = +3.3V ±10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted. PARAMETERS TTL INPUT Logic Threshold Low High Logic Pullup Current Maximum Data Rate TTL OUTPUT TTL/CMOS Output Voltage, Low Voltage, High Leakage Current; TA = +25°C EIA-232 OUTPUT Output Voltage Swing MIN. TYP. MAX. UNITS CONDITIONS 0.8 Volts Volts µA kbps TIN ; ON/OFF TIN ; ON/OFF TIN = 0V CL = 2500pF, RL= 3kΩ Volts Volts µA IOUT = 3.2mA; Vcc = +5V IOUT = -1.0mA EN = VCC, 0V ≤ VOUT ≤ VCC ±9 Volts ±18 Ω mA All transmitter outputs loaded with 3kΩ to ground VCC = 0V; VOUT = ±2V Infinite duration 2.0 15 200 120 0.4 3.5 0.05 ±5 Power-Off Output Resistance 300 Output Short Circuit Current EIA-232 INPUT Voltage Range -15 Voltage Threshold Low 0.8 High Hysteresis 0.2 Resistance 3 DYNAMIC CHARACTERISTICS Propagation Delay, RS-232 to TTL Instantaneous Slew Rate ±10 1.2 1.7 0.5 5 +15 Volts 2.4 1.0 7 Volts Volts Volts kΩ 30 µs V/µs 1.5 Transition Region Slew Rate 10 V/µs Output Enable Time Output Disable Time POWER REQUIREMENTS VCC Power Supply Current 400 250 ns ns 10 25 15 mA mA 1 10 µA Shutdown Supply Current VCC = 5V, TA = +25°C VCC = 5V, TA = +25°C VCC = 5V, TA = +25°C VIN = 15V to –15V CL = 10pF, RL= 3kΩ - 7kΩ; TA =+25°C CL = 2500pF, RL= 3kΩ; measured from +3V to -3V or -3V to +3V No load, TA= +25°C; VCC = 5V All transmitters RL = 3kΩ; TA = +25°C VCC = 5V, TA = +25°C TYPICAL PERFORMANCE CHARACTERISTICS -11 12 30 10 25 VCC = 6V VCC = 4V -5 VOH (Volts) -6 VCC = 4V 6 8.0 VCC = 6V 20 ICC (mA) VCC = 5V -7 VCC = 5V 8 VCC = 6V -8 V+ (Volts) V– Voltage (Volts) -9 15 VCC = 5V 4 10 2 5 2 4 6 8 10 Load Current (mA) Date: 03/08/05 12 14 0 0 5 10 15 20 25 30 35 0 -55 40 Load Current (mA) -40 0 25 70 85 125 Temperature (°C) SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 3 7.6 Load current = 0mA TA = 25°C 7.4 7.0 VCC = 3V 0 7.8 7.2 VCC = 4V -4 -3 8.4 8.2 -10 6.8 4.5 4.75 5.0 5.25 5.5 VCC (Volts) © Copyright 2005 Sipex Corporation PINOUT 18 ON/OFF C1+ 2 17 VCC V+ 3 16 GND C1 - 4 15 T 1 OUT C 2+ 5 R 1 OUT 7 12 T 1 IN 8 11 T 2 IN 6 VT2 OUT 10 9 1 20 ON/OFF C1+ 2 19 VCC V+ 3 18 GND C 1- 4 17 T1 OUT 16 R1 IN 15 R1 OUT 14 T1 IN C2+ 5 C 2- 6 V- 7 T2OUT 8 13 T2 IN 9 12 R2OUT N/C 10 11 N/C R 1 IN 13 C 2- R2 IN 14 N/C SP385E 1 SP385E N/C R2 IN R 2 OUT 18-pin WSOIC 20-pin SSOP TYPICAL OPERATING CIRCUIT +5V INPUT 1.0µF + 16V 6 17 V C + 1 C 1C + 2 C 2- 0.1µF 16V CC +5V to +10V Voltage Doubler V+ +10V to -10V Voltage Inverter V- 1.0µF + 6.3V + 0.1µF 16V 1 4 5 2 6 R 1OUT 11 13 T2 8 14 R1 T 2OUT R1 IN 5kΩ R 2OUT 10 9 R2 R2 IN TTL/CMOS INPUTS T 1OUT TTL/CMOS OUTPUTS RS232 OUTPUTS 15 400kΩ T2 IN C 2- 5kΩ SP311E SP385E 18 ON/OFF T1 IN +5V to +10V Voltage Doubler V+ +10V to -10V Voltage Inverter V- 14 3 + 7 + 0.1µF 16V T1 17 T2 8 T2 IN R 1OUT 13 15 16 R1 T 2OUT R1 IN 5kΩ R 2OUT 12 9 R2 R2 IN 5kΩ SP311E SP385E GND SOIC Package T 1OUT 400kΩ GND 16 Date: 03/08/05 0.1µF 16V CC 400kΩ T1 RS232 INPUTS TTL/CMOS INPUTS TTL/CMOS OUTPUTS 12 C 1C + 1.0µF + 16V V C + 400kΩ T1 IN 19 2 3 + 7 + RS232 OUTPUTS 2 1.0µF + 6.3V 4 5 +5V INPUT 10µF + RS232 INPUTS 10µF 20 ON/OFF 18 SSOP Package SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 4 © Copyright 2005 Sipex Corporation FEATURES The Sipex SP385E is a +3V to +5V EIA-232/EIA562 line transceiver. It is a pin-for-pin alternative for the SP310A and will operate in the same socket with capacitors ranging from 0.1µF to 10µF, either polarized or non–polarized, in +3V supplies. The SP385E offers the same features such as 120kbps guaranteed transmission rate, increased drive current for longer and more flexible cable configurations, low power dissipation and overall ruggedized construction for commercialandindustrialenvironments. The SP385E also includes a shutdown feature that tri-states the drivers and the receivers. Driver/Transmitter The drivers are inverting transmitters, which accept TTL or CMOS inputs and output the RS-232 signals with an inverted sense relative to the input logic levels. Typically the RS-232 output voltage swing is ±9V for 5V supply and ±4.2V for 3.3V supply. Even under worst case loading conditions of 3kΩ and 2500pF, the output is guaranteed to be ±5V for a 5V supply and ±3.7V for a 3.3V supply which adheres to EIA-232 and EIA-562 specifications, respectively. The transmitter outputs are protected against infinite short-circuits to ground without degradation in reliability. The SP385E includes a charge pump voltage converter which allows it to operate from a single +3.3V or +5V supply. These converters double the VCC voltage input in order to generate the EIA-232 or EIA562 output levels. For +5V operation, the SP385E driver outputs adhere to all EIA-232D and CCITT V.28 specifications. While at +3.3V operation, the outputs adhere to EIA-562 specifications. Due to Sipex's efficient charge pump design, the charge pump levels and the driver outputs are less noisy than other 3V EIA-232 transceivers. The instantaneous slew rate of the transmitter output is internally limited to a maximum of 30V/ µs in order to meet the standards [EIA 232-D 2.1.7, Paragraph (5)]. However, the transition region slew rate of these enhanced products is typically 10V/µs. The smooth transition of the loaded output from VOL to VOH clearly meets the monotonicity requirements of the standard [EIA 232-D 2.1.7, Paragraphs (1) & (2)]. Receivers The receivers convert RS-232 input signals to inverted TTL signals. Since the input is usually from a transmission line, where long cable lengths and system interference can degrade the signal, the inputs have a typical hysteresis margin of 500mV. This ensures that the receiver is virtually immune to noisy transmission lines. The SP385E has a single control line which simultaneously shuts down the internal DC/DC converter and puts all transmitter and receiver outputs into a high impedance state. The SP385E is available in 18-pin plastic SOIC and 20-pin plastic SSOP packages for operation over commercial and industrial temperature ranges. Please consult the factory for surfacemount packaged parts supplied on tape-on-reel as well as parts screened to MIL-M-38510. The input thresholds are 0.8V minimum and 2.4V maximum, again well within the ±3V RS-232 requirements. The receiver inputs are also protected against voltages up to ±15V. Should an input be left unconnected, a 5kΩ pull-down resistor to ground will commit the output of the receiver to a high state. The SP385E is ideal for +3.3V battery applications requiring low power operation. The charge pump strength allows the drivers to provide ±4.0V signals, plenty for typical EIA-232 applications since the EIA-232 receivers have input sensitivity levels of less than ±3V. In actual system applications, it is quite possible for signals to be applied to the receiver inputs before power is applied to the receiver circuitry. This occurs for example when a PC user attempts to print only to realize the printer wasn’t turned on. In this case an RS-232 signal from the PC will appear on the receiver input at the printer. When the printer power is turned on, the receiver will operate normally. All of these enhanced devices are fully protected. THEORY OF OPERATION The SP385E device is made up of three basic circuit blocks — 1) a driver/transmitter, 2) a receiver and 3) a charge pump. Date: 03/08/05 SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 5 © Copyright 2005 Sipex Corporation CHARGE PUMP The charge pump is a Sipex–patented design (5,306,954) and uses a unique approach compared to older less–efficient designs. The charge pump still requires four external capacitors, but uses a four–phase voltage shifting technique to attain symmetrical 10V power supplies. There is a free–running oscillator that controls the four phases of the voltage shifting. A description of each phase follows. Phase 4 — VDD transfer — The fourth phase of the clock connects the negative terminal of C2 to ground, and transfers the generated l0V across C2 to C4, the VDD storage capacitor. Again, simultaneously with this, the positive side of capacitor C1 is switched to +5V and the negative side is connected to ground, and the cycle begins again. 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. Phase 1 — VSS charge storage —During this phase of the clock cycle, the positive side of capacitors C1 and C2 are initially charged to +5V. Cl+ is then switched to ground and the charge in C1– is transferred to C2–. Since C2+ is connected to +5V, the voltage potential across capacitor C2 is now 10V. The clock rate for the charge pump typically operates at 15kHz. The external capacitors can be as low as 0.1µF with a 16V breakdown voltage rating. Phase 2 — VSS transfer — Phase two of the clock connects the negative terminal of C2 to the VSS storage capacitor and the positive terminal of C2 to ground, and transfers the generated –l0V to C3. Simultaneously, the positive side of capacitor C 1 is switched to +5V and the negative side is connected to ground. VCC = +5V C4 +5V C1 + – C2 –5V + – – + + – VDD Storage Capacitor VSS Storage Capacitor C3 –5V Figure 1. Charge Pump — Phase 1 VCC = +5V Phase 3 — VDD charge storage — The third phase of the clock is identical to the first phase — the charge transferred in C1 produces –5V in the negative terminal of C1, which is applied to the negative side of capacitor C2. Since C2+ is at +5V, the voltage potential across C2 is l0V. C4 C1 + – C2 + – – + + – VDD Storage Capacitor VSS Storage Capacitor C3 –10V Figure 2. Charge Pump — Phase 2 +10V a) C2+ GND GND b) C2– –10V Figure 3. Charge Pump Waveforms Date: 03/08/05 SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 6 © Copyright 2005 Sipex Corporation 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 6. 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. VCC = +5V C4 +5V C1 + – C2 –5V + – – + + – VDD Storage Capacitor VSS Storage Capacitor C3 –5V Figure 4. Charge Pump — Phase 3 VCC = +5V +10V C1 + – C2 C4 + – – + + – VDD Storage Capacitor 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 7. There are two methods within IEC1000-4-2, the Air Discharge method and the Contact Discharge method. VSS Storage Capacitor C3 Figure 5. Charge Pump — Phase 4 Shutdown (ON/OFF) The SP385E has a shut-down/standby mode to conserve power in battery-powered systems. To activate the shutdown mode, which stops the operation of the charge pump, a logic "0" is applied to the appropriate control line. The shutdown mode is controlled on the SP385E by a logic "0" on the ON/OFF control line (pin 18 for the SOIC and pin 20 for the SSOP packages); this puts the transmitter outputs in a tri-state mode. ESD Tolerance The SP385E 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. R RSS R RC C SW2 SW2 SW1 SW1 Device Under Test C CSS DC Power Source Figure 6. ESD Test Circuit for Human Body Model Contact-Discharge Module RSS RC C 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 SW2 SW1 DC Power Source RV Device Under Test CSS RS and RV add up to 330Ω for IEC1000-4-2. Figure 7. ESD Test Circuit for IEC1000-4-2 Date: 03/08/05 SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 7 © Copyright 2005 Sipex Corporation i➙ The Contact Discharge Method applies the ESD current directly to the EUT. This method was devised to reduce the unpredictability of the ESD arc. The discharge current rise time is constant since the energy is directly transferred without the air-gap arc. In situations such as hand held systems, the ESD charge can be directly discharged to the equipment from a person already holding the equipment. The current is transferred on to the keypad or the serial port of the equipment directly and then travels through the PCB and finally to the IC. 30A 15A 0A t=0ns t=30ns t➙ The circuit models in Figures 6 and 7 represent the typical ESD testing circuit used for all three methods. The CS is initially charged with the DC power supply when the first switch (SW1) is on. Now that the capacitor is charged, the second switch (SW2) is on while SW1 switches off. The voltage stored in the capacitor is then applied through RS, the current limiting resistor, onto the device under test (DUT). In ESD tests, the SW2 switch is pulsed so that the device under test receives a duration of voltage. Figure 8. ESD Test Waveform for IEC1000-4-2 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. SP385E Family Driver Outputs Receiver Inputs For the Human Body Model, the current limiting resistor (RS) and the source capacitor (CS) are 1.5kΩ an 100pF, respectively. For IEC-1000-42, the current limiting resistor (RS) and the source capacitor (CS) are 330Ω an 150pF, respectively. The higher CS value and lower RS value in the IEC1000-4-2 model are more stringent than the Human Body Model. The larger storage capacitor injects a higher voltage to the test point when SW2 is switched on. The lower current limiting resistor increases the current charge onto the test point. HUMAN BODY MODEL Air Discharge ±15kV ±15kV ±15kV ±15kV IEC1000-4-2 Direct Contact ±8kV ±8kV Level 4 4 Table 1. Transceiver ESD Tolerance Levels Date: 03/08/05 SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 8 © Copyright 2005 Sipex Corporation PACKAGE: 20 PIN SSOP D N SEE DETAIL “A” E1 1 E 2 INDEX AREA D x E1 2 2 2 NX R R1 A Gauge Plane Seaing Plane A L Ø L1 DETAIL A 20 Pin SSOP JEDEC MO-153 (AE) Variation MIN NOM MAX SYMBOL A 2 A1 0.05 A2 1.65 1.75 1.85 b 0.22 0.38 c 0.09 0.25 D 6.9 7.2 7.5 E 7.4 7.8 8.2 E1 5 5.3 5.6 L 0.55 0.75 0.95 1.25 REF L1 ø 0º 4º 8º A2 A Seating Plane A1 b WITH LEAD FINISH c Note: Dimensions in (mm) BASE METAL b Section A-A 20 PIN SSOP Date: 03/08/05 SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 9 © Copyright 2005 Sipex Corporation PACKAGE: 18 PIN WSOIC D Ø1 E/2 E1 E Gauge Plane L2 E1/2 Seating Plane Ø L L1 1 2 3 INDEX AREA (D/2 X E1/2) Ø1 b VIEW C e TOP VIEW B B A 18 Pin WSOIC JEDEC MS-013 (AB) Variation MIN NOM MAX SYMBOL A 2.350 2.650 A1 0.100 0.300 A2 2.050 2.550 b 0.310 0.510 c 0.200 0.330 D 11.55 BSC E 10.30 DSC E1 7.50 BSC e 1.27 BSC L 0.400 1.270 L1 1.04 REF L2 0.25 BSC ø 0º 8º ø1 5º 15º A2 Seating Plane SIDE VIEW A1 b WITH PLATING c BASE METAL Note: Dimensions in (mm) Date: 03/08/05 SEE VIEW C SECTION B-B SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 10 © Copyright 2005 Sipex Corporation ORDERING INFORMATION Model ....................................................................................... Temperature Range ................................................................................ Package SP385ECA ..................................................................................... 0°C to +70°C ............................................................................... 20–pin SSOP SP385ECA/TR ............................................................................... 0°C to +70°C ............................................................................... 20–pin SSOP SP385EEA ................................................................................... –40°C to +85°C ............................................................................. 20–pin SSOP SP385EEA/TR ............................................................................. –40°C to +85°C ............................................................................. 20–pin SSOP SP385ECT ..................................................................................... 0°C to +70°C ............................................................................. 18–pin WSOIC SP385ECT/TR ............................................................................... 0°C to +70°C ............................................................................. 18–pin WSOIC SP385EET ................................................................................... –40°C to +85°C ........................................................................... 18–pin WSOIC SP385EET/TR ............................................................................. –40°C to +85°C ........................................................................... 18–pin WSOIC Available in lead free packaging. To order add "-L" suffix to part number. Example: SP385EET/TR = standard; SP385EET-L/TR = lead free /TR = Tape and Reel Pack quantity is 1,500 for SSOP or WSIOC. CLICK HERE TO ORDER SAMPLES Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 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 herein; neither does it convey any license under its patent rights nor the rights of others. Date: 03/08/05 SP385E Enhanced +3V to +5V RS-232 Line Driver/Receiver 11 © Copyright 2005 Sipex Corporation