SP3243E EXAR [Exar Corporation], SP3243E Datasheet
SP3243E
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SP3243E Summary of contents
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... Ring Indicate signal while the device is shutdown. The SP3243E and EB devices feature slew-rate limited outputs for reduced crosstalk and EMI. The "U" and "H" series are optimized for high speed with data rates up to 1Mbps, easily meeting the demands of high speed RS-232 applications. The SP3243E series uses an internal high-efficiency, charge-pump power supply that requires only 0.1µ ...
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... V = 3.3V + AMB TxIN = GND =3.3V or =5.0V, TxIN CC ONLINE, SHUTDOWN TxIN, ONLINE, SHUTDOWN + AMB IN CC Receivers disabled OUT I = 1.6mA OUT I = -1.0mA OUT All driver outputs loaded with 3KΩ to GND + AMB SP3243E_100_072309 CC ...
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... C = 1000pF, one L L driver active R = 3KΩ 1000pF, one L L driver active Receiver input to Receiver out- put 150pF L Normal operation Normal operation | PHL PLH | PHL PLH Vcc = 3.3V 3kΩ AMB 25°C, measurements taken from -3.0V to +3.0V or +3.0V to -3.0V SP3243E_100_072309 ...
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... Figure 4. Supply Current VS. Load Capacitance for the SP3243EU 4 Figure 6. Transmitter Output Voltage VS. Load Capacitance for the SP3243EB 4 = +3.3V, 1000kbps data rate, all CC 1Driver at 1Mbps Other Drivers at 62.5Kbps All Drive rs Loaded with 3K // 250pF 3 3.5 4 4.5 5 Supply V oltage (V) 120Kbps 250Kbps 20Kbps 1 Transmi tter at full Data Rate 2 Transmi tters ...
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... All drivers loaded 3K + Load Cap 0 0 500 1000 2000 3000 Load Capacitance (pF) Figure 7. Slew Rate VS. Load Capacitance Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com TYPICAL PERFORMANCE CHARACTERISTICS = +25°C. AMB - Slew + Slew 4000 5000 5 = +3.3V, 1000kbps data rate, all CC SP3243E_100_072309 ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com PIN NUMBER SP3243E SP3243EUCR QFN 1,24,27,30 SP3243E_100_072309 ...
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... TTL/CMOS INPUTS TTL/CMOS OUTPUTS To µ P Supervisor Figure 8. SP3243E Typical Operating Circuit OUT 1 T OUT 2 Figure 9. SP3243E QFN Pinout Configuration Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com 0.1 µ F ...
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... Otherwise, the system automati- cally comes online. This feature allows design engineers to address power saving concerns without major design changes. THEORY OF OPERATION The SP3243E series is made up of four basic circuit blocks: 1. Drivers 2. Receivers 3. the Exar proprietary charge pump, and 4 ...
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... High-Z when the AUTO ON-LINE circuitry is enabled or when in shutdown. The truth table logic of the SP3243 driver and receiver outputs can be found in Table 2. The SP3243E includes an additional non-in- verting receiver with an output extra output that remains active and monitors activity while the other receiver outputs are forced into high impedance ...
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... CC to the the negative , the volt GND the V storage capacitor. This switched and V are separately generated + – and V + from V will show a decrease in – + compared to V due to the – + SP3243E_100_072309 , the 4 CC will – ...
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... For other supply voltages, see the table for required capacitor values. Do not use values smaller than those listed. Increasing the capacitor values (e.g., by doubling in value) The SP3243E devices have 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 ...
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... The STATUS pin outputs a logic LOW signal if the device is shutdown. This pin goes to a logic HIGH when the external transmitters are enabled and the cable is connected. When the SP3243E devices are shut down, the charge pumps are turned off. V+ charge pump output decays to V circuitry, ® ...
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... – + – -5.5V = + – V Storage Capacitor – + – V Storage Capacitor SS C – +5V +5. – V Storage Capacito – + – V Storage Capacitor Storage Capacitor Storage Capacitor Storage Capacito r Storage Capacitor SP3243E_100_072309 ...
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... Transmitted Data 4. Data Terminal Ready 5. Signal Ground (Common) Figure 20. Circuit for the connectivity of the SP3243E with a DB-9 connector Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com The SP3243E driver outputs are able to maintain voltage under loading 2.5mA per driver, ensuring sufficient output for mouse-driving ap- plications ...
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... INACT R X OUT Delay Stage STATUS R INACT 5 SP3243E_100_072309 ...
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... ESD TOLERANCE The SP3243E series 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 dis- charges and associated transients. The improved ESD tolerance is at least +15kV without damage nor latch-up ...
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... SW1 and R V add up to 330Ω for IEC1000-4-2. 30A 15A 0ns ) are S Figure 25. ESD Test Waveform for IEC1000-4-2 value in the S Air Discharge Direct Contact +15kV +15kV 17 SW2 Device Under Test t = 30ns t → IEC1000-4-2 Level +8kV 4 +8kV 4 SP3243E_100_072309 ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com PACKAGE: 28 PIN WSOIC 18 SP3243E_100_072309 ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com PACKAGE: 32 PIN QFN 19 SP3243E_100_072309 ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com PACKAGE: 28 PIN SSOP 20 SP3243E_100_072309 ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com PACKAGE: 28 PIN TSSOP 21 SP3243E_100_072309 ...
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... Tape and Reel options “L” suffix indicates Lead Free packaging Package Type A= SSOP Y= TSSOP T= WSOIC R= QFN Temperature Range C= Commercial Range 0ºc to 70ºC E= Extended Range -40ºc to 85ºC Speed Indicator Blank= 120Kbps B= 250Kbps H= 460kbps U= 1Mbps ESD Rating E= 15kV HBM and IEC 1000-4 22 SP3243E_100_072309 ...
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... SP3243EHET-L SP3243EUCA-L SP3243EUCT-L SP3243EUCY-L SP3243EUER-L SP3243EUEA-L SP3243EUET-L SP3243EUEY-L SP3243EUER-L For Tape and Reel option add "/TR", Example: SP3243ECA-L/TR. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com ORDERING INFORMATION Temp. Range 120 0C to +70C 120 0C to +70C 120 ...
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... Copyright 2009 EXAR Corporation Datasheet July 2009 Send your Interface technical inquiry with technical details to: uarttechsupport@exar.com Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com REVISION HISTORY Notice 24 SP3243E_100_072309 ...