XR82C684CJ-F Datasheet, PDF (11/107 Pages) Exar Corporation – CMOS Quad Channel UART(QUART)

XR82C684
DC ELECTRICAL CHARACTERISTICS ^{1, 2}
Test Conditions: _ L 9

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Symbol
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Parameter
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Min.
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4

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.
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Unit
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Conditions
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Notes
1 _{Parameters are valid over the specified temperature and operating supply ranges. Typical values are 25
C, VCC = 5V and typical}
processing parameters.
2 _{All voltages are referenced to ground (GND). For testing, input signal levels are 0.4V and 2.4V with a transition time of 20ns}
maximum. All time measurements are referenced at input voltages of 0.8V and 2.0V as appropriate. See NO TAG.
3 _{Measured operating with a 3.6864 MHz crystal and with all outputs open.}
4 _{The minimum high time must be at least 1.5 times the X1/CLK period and the minimum low time must be at least equal to the X1/CLK}
period if either channel’s Receiver is operating in external 1X clock mode.