XR68C681 View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR68C681

CMOS Dual Channel UART(DUART)

Exar Corporation 

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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 “0” and 2.4V for a logic “1” except for -40 to 85
C and -55 to 125
C, logic “1” shall be

2.6V. Timing measurements are made at 0.8V for a logic “0” and 2.0V for a logic “1”.

22

2

Figure 32. Reset Timing

 

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