SP3238ECY Exar Corporation, SP3238ECY Datasheet
SP3238ECY
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SP3238ECY Summary of contents
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Intelligent +3.0V to +5.5V RS-232 Transceiver Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source ® AUTO ON-LINE circuitry automatically wakes up from a ...
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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 ...
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V = +3.0 to +5.5, C1 -C4 = 0.1µF (tested at 3.3V + 5%), C1-C4 = 0.22µF (tested at 3.3V + 10%), C1 = 0.047µF, and C2-C4 = 0.33µF (tested at 5. 10%), ...
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V = +3.0 to +5.5, C1 -C4 = 0.1µF (tested at 3.3V + 5%), C1-C4 = 0.22µF (tested at 3.3V + 10%), C1 = 0.047µF, and C2-C4 = 0.33µF (tested at 5. 10%), ...
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PIN DESCRIPTION ...
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SHUTDOWN Figure 4. SP3238E Pinout Configuration Date: 03/04/ C2+ C1+ GND C2 C1 OUT SP3238E ...
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0.1µ 0.1µ TTL/CMOS INPUTS TTL/CMOS 20 OUTPUTS µP Supervisor Circuit Figure 5. SP3238E Typical Operating Circuit Date: ...
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DESCRIPTION The SP3238E device meets the EIA/TIA-232 and ITU-T V.28/V.24 communication protocols and can be implemented in battery-powered, por- table, or hand-held applications such as notebook or palmtop computers. The SP3238E device features Sipex's proprietary and patented (U.S. #5,306,954) on-board ...
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Figure 7 shows a loopback test circuit used to test the RS-232 Drivers. Figure 8 shows the test results of the loopback circuit with all five driv- ers active at 120kbps with typical RS-232 loads in parallel with 1000pF capacitors. ...
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Should an input be left unconnected, an internal 5kΩ pulldown resistor to ground will commit the output of the receiver to a HIGH state. Charge Pump The charge pump is a Sipex–patented design (U.S. #5,306,954) and uses ...
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RECEIVER RS-232 INPUT VOLTAGES STATUS DRIVER RS-232 OUTPUT VOLTAGES Figure 10. AUTO ON-LINE ® Timing Waveforms Figure 11. Charge Pump — Phase 1 Figure 12. Charge Pump — Phase 2 Date: 03/04/ +2. -2.7V ...
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Figure 13. Charge Pump Waveforms Figure 14. Charge Pump — Phase 3 Figure 15. Charge Pump — Phase 4 Date: 03/04/ Ch1 2.00V Ch2 2.00V M ...
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0.1µF 25 C1 0.1µF 3 C2- R OUT OUT OUT OUT ...
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AUTO ON-LINE ® Circuitry The SP3238E device has a patent pending ® AUTO ON-LINE circuitry on board that saves power in applications such as laptop computers, palmtop (PDA) computers, and other portable systems. The SP3238E device incorporates an ® AUTO ...
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ESD TOLERANCE The SP3238E 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 ...
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Power Source Figure 20. ESD Test Circuit for IEC1000-4-2 The circuit model in Figures 19 and 20 represent the typical ESD testing circuit used for all three methods. The C is initially charged with the ...
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INDEX AREA Pin SSOP JEDEC MO-150 (AH) Variation MIN NOM SYMBOL 0. 1.65 1. 9.9 10.2 E ...
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INDEX AREA Pin TSSOP JEDEC MO-153 (AE) Variation SYMBOL MIN NOM 9.6 ...
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... ORDERING INFORMATION Model SP3238ECA SP3238ECA/TR SP3238ECY SP3238ECY/TR SP3238EEA SP3238EEA/TR SP3238EEY SP3238EEY/TR Available in lead free packaging. To order add “-L” suffix to part number. Example: SP3238EEA/TR = standard; SP3238EEA-L/TR = lead free /TR = Tape and Reel Pack quantity is 1,500 for SSOP or TSSOP. Corporation ANALOG EXCELLENCE Sipex Corporation ...