XR68C681J View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR68C681J

CMOS Dual Channel UART(DUART)

Exar Corporation 

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XR68C681

DC ELECTRICAL CHARACTERISTICS 1, 2, 3

Test Conditions: TA = 0 - 70
C, 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   ;

/

6

 '( $

1



 $& $

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 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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