Datasheet

SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623
OCTAL BUS TRANSCEIVERS
SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbols
†
2
EN1
19
EN2
1
OEAB
2
A1
B1
18
OEBA
1
SN74ALS620A
2
EN1
19
EN2
1
OEAB
2
A1
3
A2
B1
18
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
B2
17
B3
16
B5
14
B4
15
B6
13
B8
11
B7
12
OEBA
1
SN74ALS621A
2
EN1
19
EN2
1
OEAB
2
A1
3
A2
B1
18
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
B2
17
B3
16
B5
14
B4
15
B6
13
B8
11
B7
12
OEBA
1
SN74ALS623A, SN74AS623
3
A2
B2
17
4
A3
B3
16
5
A4
B4
15
6
A5
B5
14
7
A6
B6
13
8
A7
B7
12
9
A8
B8
11
†
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.