SP211EEA-L

SP208E / SP211E / SP213E Data Sheet Low Power, High ESD +5V RS-232 Transceivers General Description Features The SP208E-SP213E are enhanced transceivers intended for use in RS-232 and V.28 serial communication. These devices feature very low power consumption and singlesupply operation making them ideal for space-constrained applications. MaxLinear on-board charge pump circuitry generates fully compliant RS-232 voltage levels using small and inexpensive 0.1µF charge pump capacitors. External +12V and -12V supplies are not required. The SP211E and SP213E feature a low-power shutdown mode, which reduces power supply drain to 1µA. SP213E includes two receivers that remain active during shutdown to monitor for signal activity. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ The SP208E-SP213E devices are pin-to-pin compatible with our previous SP208, SP211 and SP213 as well as industrystandard competitor devices. Driver output and receiver input pins are protected against ESD to over ±15kV for both Human Body Model and IEC61000-4-2 Air Discharge test methods. Data rates of 120kbps are guaranteed, making them compatible with high speed modems and PC remoteaccess applications. Receivers also incorporate hysteresis for clean reception of slow moving signals. Meets all EIA-232 and ITU V.28 specifications Single +5V supply operation 3mA typical static supply current 4 x 0.1μF external charge pump capacitors 120kbps transmission rates Standard SOIC and SSOP footprints 1μA shutdown mode (SP211E & SP213E) Two wake-up receivers (SP213E) Tri-state / Rx enable (SP211E & SP213E) Improved ESD specifications:  ±15kV Human Body Model  ±15kV IEC6100-4-2 Air Discharge  ±8kV IEC6100-4-2 Contact Discharge Table 1: Model Selection Table Ordering Information - page 20 Device Drivers Receivers Pins SP208E 4 4 24 SP211E 4 5 28 SP213E 4 5 28 Typical Application +5V INPUT 9 0.1μF 6.3V 10 0.1μF 6.3V VCC V+ 12 13 0.1μF 16V C1+ 14 11 0.1μF 6.3V C1– C2+ V- 15 SP208E 0.1μF 16V C2– 400kΩ 2 T1 OUT 18 T2 1 T2 OUT 400kΩ T3 IN 19 T3 24 T3 OUT 400kΩ R1 OUT 21 6 T4 20 7 R1 RS-232 OUTPUTS T2 IN T4 IN TTL/CMOS OUTPUTS RT1 400kΩ T4 OUT R1 IN 5kΩ R2 OUT 4 3 R2 R2 IN 5kΩ R3 OUT 22 23 R3 R3 IN RS-232 INPUTS TTL/CMOS INPUTS T1 IN 5 5kΩ R4 OUT 17 16 R4 R4 IN* 5kΩ 8 GND Figure 1: SP208E Typical Application • www.maxlinear.com• Rev 2.0.0 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Revision History Revision History Document No. Release Date Change Description - 01/27/06 Legacy Sipex Datasheet. 1.0.0 07/23/09 Convert to Exar format, update ordering information and change rev to 1.0.0 1.0.1 10/15/12 Change ESD ratings to IEC61000-4-2, remove typical 230kbps data rate reference and update ordering information. 1.0.2 05/15/19 Update to MaxLinear format. Update ordering information. Removed obsolete SP207E. Added ESD rating section after absolute maximums. 2.0.0 10/21/20 Update SP211E and SP213E output voltage swing, RS-232 input voltage range, ICC, maximum storage temperature and absolute maximum RIN voltage. Update Transmitter / Drivers and High Efficient Charge Pumps sections in the Description. Update Transmitter Output graphs for SP211E and SP213E. Update Ordering Information. Changes made in accordance to PCN 20014 (SP211E) and PCN 20015 (SP213E). 10/21/20 Rev 2.0.0 ii SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Table of Contents Table of Contents General Description............................................................................................................................................. i Features................................................................................................................................................................ i Typical Application .............................................................................................................................................. i Specifications ..................................................................................................................................................... 1 Absolute Maximum Ratings...........................................................................................................................................1 ESD Ratings ..................................................................................................................................................................1 Electrical Characteristics ...............................................................................................................................................2 Pin Information ................................................................................................................................................... 5 Pin Configurations .........................................................................................................................................................5 Description .......................................................................................................................................................... 6 Theory Of Operation......................................................................................................................................................6 Transmitter / Drivers.............................................................................................................................................6 Receivers .............................................................................................................................................................6 Highly Efficient Charge Pump ..............................................................................................................................6 Shutdown Mode ...................................................................................................................................................8 SP213E Wakeup Function ...................................................................................................................................8 Shutdown Conditions ...........................................................................................................................................8 Receiver Enable ...................................................................................................................................................9 ESD Tolerance ............................................................................................................................................................10 EIA Standards .............................................................................................................................................................12 Typical Application Circuits .........................................................................................................................................12 Mechanical Dimensions ................................................................................................................................... 15 SSOP24 ......................................................................................................................................................................15 Mechanical Dimensions ................................................................................................................................... 16 WSOIC24 ....................................................................................................................................................................16 Mechanical Dimensions ................................................................................................................................... 17 SSOP28 ......................................................................................................................................................................17 Recommended Land Pattern and Stencil....................................................................................................... 18 SSOP28 ......................................................................................................................................................................18 Mechanical Dimensions ................................................................................................................................... 19 WSOIC28 ....................................................................................................................................................................19 Ordering Information........................................................................................................................................ 20 10/21/20 Rev 2.0.0 iii SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet List of Figures List of Figures Figure 1: SP208E Typical Application ................................................................................................................... i Figure 2: SP208E Transmitter Output @ 120kbps RL = 3kΩ, CL = 1000pF......................................................... 3 Figure 3: SP208E Transmitter Output @ 120kbps RL = 3kΩ, CL = 2500pF......................................................... 3 Figure 4: SP208E Transmitter Output @ 240kbps RL = 3kΩ, CL = 1000pF......................................................... 3 Figure 5: SP208E Transmitter Output @ 240kbps RL = 3kΩ, CL = 2500pF......................................................... 3 Figure 6: SP211E and SP213E Transmitter Output @ 120kbps RL = 3kΩ, CL = 1000pF.................................... 4 Figure 7: SP211E and SP213E Transmitter Output @ 120kbps RL = 3kΩ, CL = 2500pF.................................... 4 Figure 8: SP211E and SP213E Transmitter Output @ 240kbpsRL = 3kΩ, CL = 1000pF..................................... 4 Figure 9: SP211E and SP213E Transmitter Output @ 240kbps RL = 3kΩ, CL = 2500pF.................................... 4 Figure 10: SP208E Pin Configuration................................................................................................................... 5 Figure 11: SP211E Pin Configuration................................................................................................................... 5 Figure 12: SP213E Pin Configuration................................................................................................................... 5 Figure 13: Charge Pump - Phase 1 ...................................................................................................................... 7 Figure 14: Charge Pump - Phase 2 ...................................................................................................................... 7 Figure 15: Charge Pump - Phase 3 ...................................................................................................................... 7 Figure 16: Charge Pump - Phase 4 ...................................................................................................................... 7 Figure 17: Typical Waveforms Seen on Capacitor C2 When all Drivers are at Maximum Load .......................... 8 Figure 18: Wake-Up Timing.................................................................................................................................. 9 Figure 19: ESD Test Circuit for Human Body Model .......................................................................................... 10 Figure 20: ESD Test Circuit for IEC61000-4-2 ................................................................................................... 11 Figure 21: ESD Test Waveform for IEC61000-4-2 ............................................................................................. 11 Figure 22: Typical SP213E Application .............................................................................................................. 12 Figure 23: SP208E Typical Application .............................................................................................................. 13 Figure 24: SP211E Typical Application .............................................................................................................. 13 Figure 25: SP213E Typical Application .............................................................................................................. 14 Figure 26: Mechanical Dimension, SSOP24 ...................................................................................................... 15 Figure 27: Mechanical Dimensions, WSOIC24 .................................................................................................. 16 Figure 28: Mechanical Dimensions, SSOP28..................................................................................................... 17 Figure 29: Recommended Land Pattern and Stencil, SSOP28.......................................................................... 18 Figure 30: Mechanical Dimensions, WSOIC28 .................................................................................................. 19 10/21/20 Rev 2.0.0 iv SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet List of Tables List of Tables Table 1: Model Selection Table ............................................................................................................................. i Table 2: Absolute Maximum Ratings .................................................................................................................... 1 Table 3: ESD Ratings ........................................................................................................................................... 1 Table 4: Electrical Characteristics ........................................................................................................................ 2 Table 5: Shutdown and Wake-Up Truth Tables.................................................................................................... 9 Table 6: Transceiver ESD Tolerance Levels ...................................................................................................... 12 Table 7: Ordering Information............................................................................................................................. 20 10/21/20 Rev 2.0.0 v SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Specifications Specifications Absolute Maximum Ratings Important: These are stress ratings only and functional operation of the device at these or any other above those indicated in the operation sections of the specification below is not implied. Exposure to absolute maximum ratings conditions for extended periods of time may affect reliability. Table 2: Absolute Maximum Ratings Parameter Minimum Maximum Units 6.0 V 13.2 V 13.2 V VCC +0.3 V RIN, SP208E ±20 V RIN, SP211E, SP213E ±25 V V+, 0.3V V-, –0.3V V -0.3 VCC + 0.3 V VCC VCC - 0.3 V+ VInput Voltages TIN -0.3 Output Voltages TOUT ROUT Short Circuit Duration Tout Continuous Power Dissipation per Package 24-pin SSOP (derate 11.2mW / oC above +70oC) 900 mW 24-pin SOIC (derate 12.5mW / oC above +70oC) 1000 mW +70oC) 900 mW 28-pin SOIC (derate 12.7mW / oC above +70oC) 1000 mW Limit Units HBM (Human Body Model), Driver Outputs and Receiver Inputs ±15 kV IEC61000-4-2 Air Discharge, Driver Outputs and Receiver Inputs ±15 kV IEC61000-4-2 Contact Discharge, Driver Outputs and Receiver Inputs ±8 kV 28-pin SSOP (derate 11.2mW / oC above ESD Ratings Table 3: ESD Ratings Parameter 10/21/20 Rev 2.0.0 1 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Electrical Characteristics Electrical Characteristics VCC at nominal ratings; 0.1µF charge pump capacitors; TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 5V and TA = 25°C Table 4: Electrical Characteristics Parameter Test Condition Minimum Typical Maximum Units 0.8 V TTL Inputs TIN, EN, SD Logic threshold VIL Logic threshold VIH 2.0 Logic pull-up current TIN = 0V Maximum transmission rate CL = 1000pF, RL = 3kΩ V 15 200 120 µA kbps TTL Outputs Compatibility TTL / CMOS VOL IOUT = 3.2mA, VCC = 5V VOH IOUT = -1.0mA Leakage current 0V ≤ VOUT ≤ VCC; SP211E EN = 0V; SP213E EN = VCC, TA = +25ºC 0.4 3.5 V V 0.05 ±10 µA RS-232 Output SP208E All transmitter outputs loaded with 3kΩ to ground ±5 ±7 V SP211E, SP213E All transmitter outputs loaded with 3kΩ to ground ±5 ±8.7 V Output resistance VCC = 0V, VOUT = ±2V 300 Output short circuit current Infinite Duration, VOUT = 0V Output voltage swing Ω ±25 mA RS-232 Input Voltage range SP208E SP211E, SP213E TA = 25°C Voltage threshold low VCC = 5V, TA = 25°C Voltage threshold high VCC = 5V, TA = 25°C Hysteresis VCC = 5V Resistance VIN = ±15V, TA = 25°C –15 15 V –25 25 V 0.8 1.2 V 1.7 2.8 V 0.2 0.5 1.0 V 3 5 7 kΩ 1.5 µs Dynamic Characteristics Driver propagation delay TTL to RS-232 1.5 Receiver propagation delay RS-232 to TTL 0.5 µs Instantaneous slew rate CL = 50pF, RL = 3 - 7kΩ, TA = 25°C, from ±3V 30 V/µs Transition time CL = 2500pF, RL = 3kΩ, measured from -3V to +3V or +3V to -3V 1.5 µs Output enable time 400 ns Output disable time 250 ns 10/21/20 Rev 2.0.0 2 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Electrical Characteristics Table 4: Electrical Characteristics Parameter Test Condition Minimum Typical Maximum Units 4.50 5.00 5.50 V 3 6 mA 3 8 Power Requirements VCC ICC ICC SP208E SP211E, SP213E SP208E SP211E, SP213E Shutdown current No load: VCC = ±10%, TA = 25°C All transmitters RL = 3kΩ TA = 25°C 15 mA 23 mA 1 10 µA 0 +70 ºC -40 +85 ºC -65 +150 ºC Environmental and Mechanical Operating Temperature Commercial, _C Extended, _E Storage temperature Package _A Shrink (SSOP) small outline _T Wide (SOIC) small outline Figure 2: SP208E Transmitter Output @ 120kbps RL = 3kΩ, CL = 1000pF Figure 3: SP208E Transmitter Output @ 120kbps RL = 3kΩ, CL = 2500pF T ittTransmitter O t t @ 240kb Figure 4: SP208E Output @ 240kbps RL = 3kΩ, CL = 1000pF Figure 5: SP208E Transmitter Output @ 240kbps RL = 3kΩ, CL = 2500pF 10/21/20 Rev 2.0.0 3 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Electrical Characteristics Figure 6: SP211E and SP213E Transmitter Output @ 120kbps RL = 3kΩ, CL = 1000pF Figure 7: SP211E and SP213E Transmitter Output @ 120kbps RL = 3kΩ, CL = 2500pF Figure 8: SP211E and SP213E Transmitter Output @ 240kbpsRL = 3kΩ, CL = 1000pF Figure 9: SP211E and SP213E Transmitter Output @ 240kbps RL = 3kΩ, CL = 2500pF 10/21/20 Rev 2.0.0 4 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Pin Information Pin Information Pin Configurations SP208E Figure 3: SP208E Pin Configuration SP211E Figure 4: SP211E Pin Configuration SP213E Figure 5: SP213E Pin Configuration 10/21/20 Rev 2.0.0 5 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Description Description The SP208E, SP211E and SP213E multi–channel transceivers fit most RS-232 / V.28 communication needs. All of these devices feature low–power CMOS construction and MaxLinear on-board charge pump circuitry to generate RS-232 signal-voltages, making them ideal for applications where +9V and -9V supplies are not available. The highly efficient charge pump is optimized to use small and inexpensive 0.1µF charge pump capacitors, saving board space and reducing overall circuit cost. Each device provides a different driver / receiver combination to match standard application requirements. SP208E is a 4-driver/4-receiver device, ideal for providing handshaking signals in V.35 applications or other generalpurpose serial communications. The SP211E and SP213E are each 3-driver, 5-receiver devices ideal for DTE serial ports on a PC or other data-terminal equipment. The SP211E and SP213E feature a low–power shutdown mode, which reduces power supply drain to 1µA. The SP213E includes a Wake-Up function which keeps two receivers active in the shutdown mode, unless disabled by the EN pin. The family is available in 28 and 24 pin SO (wide) and SSOP (shrink) small outline packages. Devices can be specified for commercial (0˚C to +70˚C) and industrial/ extended (–40˚C to +85˚C) operating temperatures. Theory Of Operation MaxLinear RS-232 transceivers contain three basic circuit blocks: ■ ■ ■ Transmitter / driver Receiver The drivers of the SP211E, and SP213E can be tri-stated by using the SHUTDOWN function. In this “power-off” state, the charge pump is turned off and VCC current drops to 1µA typical. Driver output impedance will remain greater than 300Ω, satisfying the RS-232 and V.28 specifications. For SP211E, SHUTDOWN is active when pin 25 is driven high. For SP213E, SHUTDOWN is active when pin 25 is driven low. Receivers The receivers convert RS-232 level input signals to inverted TTL level signals. Because signals are often received from a transmission line where long cables and system interference can degrade signal quality, the inputs have enhanced sensitivity to detect weakened signals. The receivers also feature a typical hysteresis margin of 500mV for clean reception of slowly transitioning signals in noisy conditions. These enhancements ensure that the receiver is virtually immune to noisy transmission lines. Receiver input thresholds are between 1.2 to 1.7 volts typical. This allows the receiver to detect standard TTL or CMOS logic-level signals as well as RS-232 signals. If a receiver input is left unconnected or un-driven, a 5kΩ pulldown resistor to ground will commit the receiver to a logic-1 output state. Highly Efficient Charge Pump Charge pump The onboard dual-output charge pump is used to generate positive and negative signal voltages for the RS-232 drivers. This enables fully compliant RS-232 and V.28 signals from a single power supply device. SP211E and SP213E also include SHUTDOWN and ENABLE functions. Transmitter / Drivers The drivers are single-ended inverting transmitters, which accept either TTL or CMOS inputs and output the RS-232 signals with an inverted sense relative to the input logic levels. Should the input of the driver be left open, an internal pullup to VCC forces the input high, thus committing the output to a logic-1 (MARK) state. The slew rate of the transmitter output is internally limited to a maximum of 10/21/20 30V / µs in order to meet the EIA / RS-232 and ITU V.28 standards. The transition of the output from high to low also meets the monotonicity requirements of the standard, even when loaded. The transmitter outputs are protected against infinite short-circuits to ground without degradation in reliability. The charge pumps use four external capacitors to hold and transfer electrical charge. The MaxLinear design uses a unique approach compared to older, less–efficient designs. The pumps use a four–phase voltage shifting technique to attain symmetrical V+ and V- power supplies. Rev 2.0.0 6 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Phase 1 - VSS Charge Store and Double VCC = +5V The positive terminals of capacitors C1 and C2 are charged from VCC with their negative terminals initially connected to ground. C1+ is then connected to ground and the stored charge from C1- is superimposed onto C2-. Since C2+ is still connected to VCC the voltage potential across C2 is now 2 x VCC. + C1 – – –5V + – – – + VDD Storage Capacitor VSS Storage Capacitor C3 –5V Figure 6: Charge Pump - Phase 1 + VSS Storage Capacitor C3 –5V +7V C1 + – C2 C4 + – – + + – VDD Storage Capacitor VSS Storage Capacitor C3 Figure 9: Charge Pump - Phase 4 VCC = +5V The MaxLinear charge-pump generates V+ and Vindependently from VCC. Hence in a no–load condition V+ and V- will be symmetrical. Older charge pump approaches generate V+ and then use part of that stored charge to generate V-. Because of inherent losses, the magnitude of V- will be smaller than V+ on these older designs. C4 C2 + – – + + – -7V VDD Storage Capacitor VSS Storage Capacitor C3 Figure 7: Charge Pump - Phase 2 Phase 3 - VDD Charge Store and Double Phase three is identical to the first phase. The positive terminals of C1 and C2 are charged from VCC with their negative terminals initially connected to ground. C1+ is then connected to ground and the stored charge from C1- is superimposed onto C2-. Since C2+ is still connected to VCC the voltage potential across capacitor C2 is now 2 x VCC. 10/21/20 – VCC = +5V Phase two connects the negative terminal of C2 to the VSS storage capacitor and the positive terminal of C2 to ground. This transfers the doubled and inverted (V-) voltage onto C3. Meanwhile, capacitor C1 is charged from VCC to prepare it for its next phase. – – VDD Storage Capacitor The fourth phase connects the negative terminal of C2 to ground and the positive terminal of C2 to the VDD storage capacitor. This transfers the doubled (V+) voltage onto C4. Meanwhile, capacitor C1 is charged from VCC to prepare it for its next phase. Phase 2 - VSS Transfer and Invert + – + Phase 4 - VDD Transfer C4 + C2 –5V C1 C2 + Figure 8: Charge Pump - Phase 3 +5V + C4 +5V VCC = +5V C1 Description The clock rate for the charge pump typically operates at greater than 15kHz, allowing the pump to run efficiently with small 0.1µF capacitors. Efficient operation depends on rapidly charging and discharging C1 and C2, therefore capacitors should be mounted close to the IC and have low ESR (equivalent series resistance). Low cost surface mount ceramic capacitors (such as are widely used for power-supply decoupling) are ideal for use on the charge pump. However the charge pumps are designed to be able to function properly with a wide range of capacitor styles and values. If polarized capacitors are used, the positive and negative terminals should be connected as shown. Rev 2.0.0 7 SP208E / SP211E / SP213E Low Power, High ESD +5V RS-232 Transceivers Data Sheet Voltage potential across any of the capacitors will never exceed 2 x VCC. Therefore capacitors with working voltages as low as 10V rating may be used with a nominal VCC supply. C1 will never see a potential greater than VCC, so a working voltage of 6.3V is adequate. The reference terminal of the VDD capacitor may be connected either to VCC or ground, but if connected to ground a minimum 16V working voltage is required. Higher working voltages and / or capacitance values may be advised if operating at higher VCC or to provide greater stability as the capacitors age. +7V a) C2+ GND GND b) C2– Description SP213E Wakeup Function On the SP213E, shutdown will tri-state receivers 1 - 3. Receivers 4 and 5 remain active to provide a “wake-up” function and may be used to monitor handshaking and control inputs for activity. With only two receivers active during shutdown, the SP213E draws only 5 - 10µA of supply current. Many standard UART devices may be configured to generate an interrupt signal based on changes to the Ring Indicate (RI) or other inputs. A typical application of this function would be to detect modem activity with the computer in a power–down mode. The ring indicator signal from the modem could be passed through an active receiver in the SP213E that is itself in the shutdown mode. The ring indicator signal would propagate through the SP213E to the power management circuitry of the computer to power up the microprocessor and the SP213E drivers. After the supply voltage to the SP213E reaches +5.0V, the SHUTDOWN pin can be disabled, taking the SP213E out of the shutdown mode. All receivers that are active during shutdown maintain 500mV (typ.) of hysteresis. All receivers on the SP213E may be put into tri-state using the ENABLE pin. –7V Figure 10: Typical Waveforms Seen on Capacitor C2 When all Drivers are at Maximum Load Shutdown Conditions For complete shutdown to occur and the 10µA power drain to be realized, the following conditions must be met: Shutdown Mode SP211E and SP213E feature a control input which will shut down the device and reduce the power supply current to less than 10µA, making the parts ideal for battery-powered systems. In shutdown mode the transmitters will be tristated, the V+ output of the charge pump will discharge to VCC and the V- output will discharge to ground. Shutdown will tri-state all receiver outputs of the SP211E. SP211E: ■ ■ +5V must be applied to the SD pin ■ The transmitter inputs must be either +5.0V or not connected ■ ■ ENABLE must be either Ground, +5.0V or not connected VCC must be +5V Receiver inputs must be >0V and 0V and