74F646A 查看數據表（PDF） - Philips Electronics
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74F646A Datasheet PDF : 16 Pages
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Philips Semiconductors
Transceivers/registers
PIN CONFIGURATION
74F648/648A
CPAB 1
SAB 2
DIR 3
A0 4
A1 5
A2 6
A3 7
A4 8
A5 9
A6 10
A7 11
GND 12
24 VCC
23 CPBA
22 SBA
21 OE
20 B0
19 B1
18 B2
17 B3
16 B4
15 B5
14 B6
13 B7
SF00389
LOGIC SYMBOL
74F648/648A
4 5 6 7 8 9 10 11
A0 A1 A2 A3 A4 A5 A6 A7
1
CPAB
2
SAB
3
DIR
23
CPBA
22
SBA
21
OE
B0 B1 B2 B3 B4 B5 B6 B7
VCC = Pin 24
GND = Pin 12
20 19 18 17 16 15 14 13
SF00390
Product specification
74F646/A/74F648/A
IEC/IEEE SYMBOL
74F648/648A
21
G3
3
3 EN1 [BA]
3 EN2 [AB]
23
22
C4
G5
1
C6
2
G7
4
1
5
4D
1
51
6D
7
1
5
17
2
6
7
8
9
10
11
20
19
18
17
16
15
14
13
SF00391
LOGIC DIAGRAM
21
OE
DIR 3
CPBA 23
22
SBA
1
CPAB 2
SAB
74F648/648A
I of 8 channels
1D
C1
A0 4
1D
C1
20
B0
to 7 other channels
SF00400
1990 Sep 25
4
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