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SP208EHEP Datasheet(PDF) 11 Page - Sipex Corporation |
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SP208EHEP Datasheet(HTML) 11 Page - Sipex Corporation |
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11 / 16 page  11 SP207EHDS/08 SP207EH Series High Performance Transceivers © Copyright 2000 Sipex Corporation For the Human Body Model, the current limiting resistor (R S) and the source capacitor (CS) are 1.5k Ω an100pF,respectively. ForIEC-1000-4-2, the current limiting resistor (R S) and the source capacitor (C S) are 330Ω an 150pF, respectively. The higher C S value and lower R S 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. DEVICE PIN HUMAN BODY IEC1000-4-2 TESTED MODEL Air Discharge Direct Contact Level Driver Outputs +15kV +15kV +8kV 4 Receiver Inputs +15kV +15kV +8kV 4 Specification RS–232D RS–423A RS–422 RS–485 RS–562 Mode of Operation Single–Ended Single–Ended Differential Differential Single–Ended No. of Drivers and Receivers 1 Driver 1 Driver 1 Driver 32 Drivers 1 Driver Allowed on One Line 1 Receiver 10 Receivers 10 Receivers 32 Receivers 1 Receiver Maximum Cable Length 50 feet 4,000 feet 4,000 feet 4,000 feet C ≤ 2,500pF @ <20Kbps; C ≤1,000pF @ >20Kbps Maximum Data Rate 20Kb/s 100Kb/s 10Mb/s 10Mb/s 64Kb/s Driver output Maximum Voltage ±25V ±6V –0.25V to +6V –7V to +12V –3.7V to +13.2V Driver Output Signal Level Loaded ±5V ±3.6V ±2V ±1.5V ±3.7V Unloaded ±15V ±6V ±5V ±5V ±13.2V Driver Load Impedance 3 – 7Kohm 450 ohm 100 ohm 54 ohm 3–7Kohm Max. Driver Output Current (High Impedance State) Power On ±100µA Power Off VMAX/300 100 µA ±100µA ±100µA Slew Rate 30V/ µs max. Controls Provided 30V/ µs max. Receiver Input Voltage Range ±15V ±12V –7V to +7V –7V to +12V ±15V Receiver Input Sensitivity ±3V ±200mV ±200mV ±200mV ±3V Receiver Input Resistance 3–7Kohm 4Kohm min. 4Kohm min. 12Kohm min. 3–7Kohm Table 4. EIA Standard Definitions EIA STANDARDS The Electronic Industry Association (EIA) developed several standards of data transmission which are revised and updated in order to meet the requirements of the industry. In data processing, there are two basic means of communicatingbetweensystemsandcomponents. The RS-232 standard was first introduced in 1962 and, since that time, has become an industry standard. The RS-232 is a relatively slow data exchange protocol, with a maximum baud rate of only 20kbps, which can be transmitted over a maximum copper wire cable length of 50 feet. The SP207EH through SP213EH Series of data communications interface products have been designed to meet both the EIA protocol standards, and the needs of the industry. Table 3. Transceiver ESD Tolerance Levels |
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