XR68C681J View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR68C681J

CMOS Dual Channel UART(DUART)

Exar Corporation 

1 2 3 4 5 6 7 8 9 10 Next

XR68C681

PIN CONFIGURATION

= @

#, <

.A 

:7 

5* 

8


5* 1

, =

,1 6

,6 /

,@ @

XR68C681CJ

1


1< 22

1@ 5

1/ 5.
:7

16 5

1= 8

11 5

1 ,

1 ,

1 ,=

 ,/

 

#,1 

 1

#, =

1 6

= /

#, @

.A8 <


78 

5* 

5* 

, 

,1 1

,6 =

,@ 6

 /

1 @

6 <

@ 

08 

XR68C681

= ''

1 #,=

1< #,6

1@ #
7

1/ #,

16


1= 22

11 5

1 5.
:7

1 5

1 5

 ,

< ,

@ ,=

/ ,/

6 

= 

1 =

 /

 #8

44 Pin PLCC

40 Pin PDIP, CDIP

(0.600”)

PIN DESCRIPTION

Pin Number Pin Number

(44 pin PLCC) (40 pin DIP)







1



=

1

6

=

/

6

@

/

Symbol

8



#,1

5




#,


*

1

=

Type Description

No Connect.

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

 %$  %' '( -(%% ( (    $(' $(-

$ $ ( (% (  
,

# Input Port 3. 0 % (    ! ''3 ( +

 %( 5


# Address Input.

# Input Port 1. 0 % (  (% ( '  '+(-$ 

   '(
 *
$ # 
*

# Address Input.

# MSB of Address Input.  (% (" - ( $$%% #%"  

1  %$  %' '( -(%% ( (    $('

 

1

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