xr68c681 Exar Corporation, xr68c681 Datasheet - Page 8
xr68c681
Manufacturer Part Number
xr68c681
Description
Cmos Dual Channel Uart Duart
Manufacturer
Exar Corporation
Datasheet
1.XR68C681.pdf
(75 pages)
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DC ELECTRICAL CHARACTERISTICS
Test Conditions: T
Notes
1.
2.
3.
4.
Parameters are valid over the specified temperature and operating supply ranges. Typical values are 25C, V
processing parameters.
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 Figure 31.
For prime grade N, P, J, L, M, ML, V
Measured operating with a 3.6864MHz crystal and with all outputs open.
XR68C681
Symbol
Parameter
A
= 0 - 70C, V
CC
CC
= 5V + 10%
= 5V +5% unless otherwise specified.
1, 2, 3
Min
Typ
Max
Unit
Conditions
CC
= 5V and typical