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XR68C681CJ Datasheet(PDF) 3 Page - Exar Corporation

Part # XR68C681CJ
Description  CMOS Dual Channel UART (DUART)
Download  75 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XR68C681CJ Datasheet(HTML) 3 Page - Exar Corporation

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XR68C681
1
  
PIN CONFIGURATION

#,1
1

#,
=
1
=
#,
.A8
78
5*
5*
,
,1
,6


1
=
6
/
@
<




40 Pin PDIP, CDIP
(0.600”)
6
/
@
<


,@

1
6
@
08
''
#,=
#,6
#7
#,

22
5
5.:7
5
5
,
,
,=
,/


=
/
#8
<
@
/
6
=
1



1
1
1
11
1=
16
1/
1@
1<
1
=
XR68C681CJ

22
5
5.:7
5
8
5
,
,
,=
,6
,1
,
5*
8
5*
:7
.A
#,
=
44 Pin PLCC
,@
,/
1
1<
1@
1/
16
1=
11
1
1
1

@
<




1
=
6
/
@
XR68C681
PIN DESCRIPTION
Pin Number
(44 pin PLCC)
Pin Number
(40 pin DIP)
Symbol
Type
Description

8
No Connect.



#
LSB of Address Input.
(% (" - ( $$ %% (%"   =
 % $  %  ' ' (  -(% % ((    $ (' $(-
 $ $ (  (% (  , 
1

#,1
5
#
Input Port 3.
0  % (   !  ''3 ( +
 %(  5
=
1

#
Address Input.
6
=
#,
*
#
Input Port 1.
0  % ( (% ( '  '+(- $ 
  '(    *   $ # *
/
6
1
#
Address Input.
@
/
=
#
MSB of Address Input.
(% (" - ( $$ %% #%"  
1  % $  %  ' ' (  -(% % ((    $ (' 


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