XR68C681 Datasheet, PDF(66/75 Page) Exar Corporation – CMOS Dual Channel UART (DUART)

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XR68C681 Datasheet, PDF (66/75 Pages) Exar Corporation – CMOS Dual Channel UART (DUART)

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XR68C681

J. Timing Diagrams

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Figure 31. Input and Output Levels for Timing Measurements

Note:

AC testing inputs are driven at 0.4V for a logic â0â and 2.4V for a logic â1â except for -40 to 85C and -55 to 125C, logic â1â shall be

2.6V. Timing measurements are made at 0.8V for a logic â0â and 2.0V for a logic â1â.

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Figure 32. Reset Timing

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