SN54AS867, SN54AS869
SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869
SYNCHRONOUS 8-BIT UP/DOWN COUNTERS
SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995
†
logic symbols
SN74ALS867A
CTRDIV 256
1
S0
S1
0
0
3
2
M
1
13
11
RCO
1,4CT=0
ENT
G4
23
14
3,4CT=255
ENP
CLK
G5
C6/1,4,5–/3,4,5+
0R
3
22
21
20
19
18
17
16
15
Q
A
A
B
C
D
E
F
2,6D
4
Q
B
5
Q
C
6
Q
D
7
Q
E
8
Q
F
9
Q
G
G
H
10
Q
H
SN74ALS869
CTRDIV 256
0
3
1
S0
S1
0
2
M
1
13
11
RCO
ENT
1,4CT=0
G4
23
14
3,4CT=255
ENP
CLK
G5
C6/1,4,5–/3,4,5+
0,6R
3
22
21
20
19
18
17
16
15
Q
A
A
B
C
D
E
F
2,6D
4
Q
B
5
Q
C
6
Q
D
7
Q
E
8
Q
F
9
Q
G
G
H
10
Q
H
†
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the DW, JT, and NT packages.
3
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