Datasheet

SN54AS867, SN54AS869
SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869
SYNCHRONOUS 8-BIT UP/DOWN COUNTERS
SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbols
†
ENT
ENP
CTRDIV 256
2,6D
3
A
4
B
5
C
6
D
22
21
20
19
0
1
S0
M
0
3
3,4CT=255
0R
7
E
8
F
9
G
10
H
18
17
16
15
1
2
S1
G4
11
G5
23
14
CLK
13
1,4CT=0
RCO
Q
A
Q
B
Q
C
Q
D
Q
E
Q
F
Q
G
Q
H
SN74ALS867A
ENT
ENP
CTRDIV 256
2,6D
3
A
4
B
5
C
6
D
22
21
20
19
0
1
S0
M
0
3
3,4CT=255
0,6R
7
E
8
F
9
G
10
H
18
17
16
15
1
2
S1
G4
11
G5
23
14
CLK
13
1,4CT=0
RCO
Q
A
Q
B
Q
C
Q
D
Q
E
Q
F
Q
G
Q
H
SN74ALS869
C6/1,4,5–/3,4,5+
C6/1,4,5–/3,4,5+
†
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.