HP 3320A Operating And Service Manual page 142

POS~TIVE
LOGIC
~
i
~
:
~'
I
~
i
~"
"OTES
I.JoJI·J2·J3
2.K~nK2·K3
~""~BIT T'ME eUORE
CLOCK PUlSE.
4.'".1~ BIT TIME AFTER
CLOCK PULSE.
5.Q·Qo"'EANS OUTPUTS DO NOT
CHANGE STATES wiTH CLOCK
PULSE,
6.Q_Q" IIEANS OUTPUTS Cl'IANGE
STATES wiTH CLOCK PULSE.
3320"'-8-3085
~
I
~
D:: 10
cr
I
~
1
I I
'"
N
U
I
TPI
o
OM'" DU~U"-lI"'£ PACKAGE
ITOP VIEWI
CLOCK
Vee PRESET n K2 KI
Q
He CLEAR JI J2 J3
(l
"NO
. .
-'
I
LOW INPUT TO PRESET SETS
Q
TO LOGlCAc
LOW IN~UT TO CLEAR SETS" TO LOGICAl 0
PRESET .lND ~LEAR ARE INDEPENDE NT OF ClOC'
I I
I
"'
....
ii:ira::
I I I
15
5
NOTE 3: Logic diagram of IC is shown below.
NOTE 2: (CONT'D.l
I
1
I
",
..
'"
ii:ii:iX
I I 1
~~
~
A2
I I
......
0:0:
I I
~~
I
0:0:
1
I
u
Part No. 03320-66502
Rev C
N
U
I
-C6-
-C7-
TO XA2
hp
I
'"
-'
I
our pur
0ACO .... EtTEO
o
CLOC~ 2
'''PUT
COUO"T
I
Q
o
0L~-'~
, ,
"
,
,
:
,
,
,
" ,
,
,
"
,
,
.
, , ,
,
"
,
"
ASY"CHRO ..QUS OUTPUT
LOW '''PUT TO ClEAR
S£TSOA"BOCOO LOW
I COMPONENT
A CIRCUIT
I I
-
u ..,
I
I
000000000000000
-C8-
-C5-
G
I I I
- I
"CD'"
a:: No::. -
0::
I
I
I 0 I
C~OC~
,
- C26-
-RB-
-C3-
-C4-
I I
N - N
~
...J ....J
a::
a:::
I I I I
~OA
OArA ' .. PUTS
cou..
TI ~
~OAO C
SCHEMATIC
CONNECTOR
INSTRUMENT TYPE
NUMSER
NUMSER
1
XA20A
"A" Model - Standard.
Options 001. 002, 006
2
XA21A
"S" Model - Standard.
Options 001,002,006
3
XA22A
"A" Model - Option 003
"S" Model - Option 004
8
XA22A
"B" Model - Option 007
NOTE 2: IC3. IC4 and IC5 are programmable decade counters. The
outputs are preset to any state (number) by placing a low on the
Count/Load input and parallel loading the desired data (number) on
the Data Inputs. The outputs will change to agree with the Data
Inputs independently of the state of the clocks.
NOTE 1: The following table lists the schematic number and
connector number versus instrument type for controller board
interfacing:
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I