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SN54ALS190 Datasheet(PDF) 2 Page - Texas Instruments

Part No. SN54ALS190
Description  SYNCHRONOUS 4-BIT UP/DOWN DECADE AND BINARY COUNTERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54ALS190, SN54ALS190
SYNCHRONOUS 4-BIT UP/DOWN DECADE COUNTERS
SDAS210 – D2661, DECEMBER 1982 – REVISED MAY 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
2
’ALS190 logic symbol
A
B
13
RCO
3(CT=9)Z6
C5
[8]
[4]
[2]
[1]
1,5D
1,2–/1,3+
G4
M3 (UP)
M2 (DOWN)
G1
7
QD
6
QC
2
QB
3
QA
MAX/MIN
12
2(CT=0)Z6
CTRDIV10
9
D
10
C
1
15
11
LOAD
14
CLK
4
CTEN
D/U
5
6,1,4
’ALS190 logic diagram (positive logic)
CTEN
D/U
CLK
LOAD
A
B
C
10
9
1
15
11
14
5
4
12
MAX/MIN
13
RCO
1D
S
R
QD
7
C1
1D
S
R
QC
6
C1
C1
2
QB
R
S
1D
1D
S
R
QA
3
C1
D
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for D, J, and N packages.




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