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74HC/HCT7404D View Datasheet(PDF) - Philips Electronics

Part Name
Description
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74HC/HCT7404D
Philips
Philips Electronics Philips
74HC/HCT7404D Datasheet PDF : 28 Pages
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Philips Semiconductors
5-Bit x 64-word FIFO register; 3-state
Product speciļ¬cation
74HC/HCT7404
handbook, halfpage
(5) 4
(6) 5
(7) 6
(8) 7
(9) 8
(3) 3
(19) 17
1 (1)
OE
D0
Q0
D1
Q1
D2
Q2
D3
Q3
D4
Q4
15 (16)
14 (15)
13 (14)
12 (13)
11 (12)
SI
DOR
SO
DIR
MR
16 (18)
2 (2)
10 (11)
MGA673
Pin numbers between parentheses refer to the SO package.
Fig.3 Logic symbol.
handbook, halfpage
(1) 1
(3) 3
(11) 10
(19) 17
(5) 4
(6) 5
(7) 6
(8) 7
(9) 8
FIFO 64 x 5
EN4
[IR] 3
1Z3
[OR] 6
CTR
1 ( /C2) CT < 64 G1
CT = 0
5
CT > 0 G5
5Z6
2D
4
MGA675
2 (2)
16 (18)
15 (16)
14 (15)
13 (14)
12 (13)
11 (12)
Pin numbers between parentheses refer to the SO package.
Fig.4 IEC logic symbol.
handbook, full pagewidth
(5) 4 D0
(6) 5 D1
(7) 6 D2
(8) 7 D3
(9) 8 D4
INPUT
STAGE
1 x 5 BITS
MAIN FIFO
REGISTER
62 x 5 BITS
OUTPUT
STAGE
1 x 5 BITS
Q0 15 (16)
Q1 14 (15)
Q2 13 (14)
Q3 12 (13)
OE
Q4 11 (12)
(11) 10 MR
CONTROL LOGIC
DIR SI
2 (2) 3 (3)
DOR SO
16 (18) 17 (19)
OE
1 (1)
MGA680
Pin numbers between parentheses refer to the SO package.
Fig.5 Functional diagram.
September 1993
4
 

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