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SP504 Datasheet(PDF) 2 Page - Exar Corporation |
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SP504 Datasheet(HTML) 2 Page - Exar Corporation |
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2 / 32 page  2 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 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 for extended periods of time may affect reliability. V CC.......................................................................+7V Input Voltages: Logic...........................-0.3V to (V CC+0.5V) Drivers........................-0.3V to (V CC+0.5V) Receivers..........................................±5V Output Voltages: Logic...........................-0.3V to (V CC+0.5V) Drivers...............................................±4V Receivers....................-0.3V to (V CC+0.5V) Storage Temperature.......................-65˚C to +150˚C Power Dissipation.......................................2000mW Package Derating: ø JA................................................46 °C/W ø JC................................................6 °C/W STORAGE CONSIDERATIONS Due to the relatively large package size of the 80-pin quad flat-pack, storage in a low humidity environment is preferred. Large high density plastic packages are moisture sensitive and should be stored in Dry Vapor Barrier Bags. Prior to usage, the parts should remain bagged and stored below 40°C and 60%RH. If the parts are removed from the bag, they should be used within 48 hours or stored in an environment at or below 20%RH. If the above conditions cannot be followed, the parts should be baked for four hours at 25°C in order remove moisture prior to soldering. Exar ships the 80-pin QFP in Dry Vapor Barrier Bags with a humidity indicator card and desiccant pack.The humidity indicator should be below 30%RH. SPECIFICATIONS T A = +25°C and VCC = +5.0V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS Logic Inputs V IL 0.8 Volts V IH 2.0 Volts LOGIC OUTPUTS V OL 0.4 Volts I OUT = +3.2mA V OH 2.4 Volts I OUT = -.0mA RS-485 DRIVER TTL Input Levels V IL 0.8 Volts V IH 2.0 Volts Outputs HIGH Level Output +6.0 Volts LOW Level Output -0.3 Volts Differential Output +/-.5 +/-5.0 Volts R L = 54Ω, CL = 50pF Balance +/-0.2 Volts |V T| - |VT| Offset +2.5 Volts Open Circuit Voltage +/-6.0 Volts Output Current 28.0 mA R L = 54Ω Short-Circuit Current +/-250 mA Terminated in -7V to +0V Transition Time 20 40 ns Rise/Fall time, 0% to 90% Max. Transmission Rate 0 Mbps R L = 54Ω; Figure 3a Propagation Delay t PHL 50 80 00 ns T A @ 25°C and VCC = +5V only Fig- ures 3a and 5; R L= 54Ω, CL=50pF |
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