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XR68C681J-F Datasheet, PDF (8/75 Pages) Exar Corporation – CMOS Dual Channel UART(DUART)
XR68C681
DC ELECTRICAL CHARACTERISTICS 1, 2, 3
Test Conditions: TA = 0 - 70C, VCC = 5V +5% unless otherwise specified.
Symbol
;#:
;#9
;#9
;#95
;:
;9
##:
##:2:
#5:
#5:
#5#9
#59
#::
#
#
#
Parameter
#  : ;-
#  9(- ;-
#  9(- ;- ((&
#  9(- ;- 5.:7
 : ;-
 9(- ;-
#  : 3-  
  ' ,( : 3-  
5 #  :  
5 #  :  
5 #  9(-  
5 #  9(-  
 % ( : 3-  
 (  : 3-  
,  &  =
,  &  =
Min
Typ
Max
Unit Conditions
6
<
;

;
;

;  J 66  6
=
;
;
=
;
#: J = 
=
;
#9 J =
6
6
 ;#8 J   ;
1
?1
 ;#8 J   ;

 ;#8 J 
@


 ;#8 J ;

 ;#8 J ;


 ; J   ;


 ; J   ;
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6
 '( $
1

  $& $
Notes
1.Parameters are valid over the specified temperature and operating supply ranges. Typical values are 25C, 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 Figure 31.
3.For prime grade N, P, J, L, M, ML, VCC = 5V + 10%
4.Measured operating with a 3.6864MHz crystal and with all outputs open.
  
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