74HC7404D datasheet(4/28 Pages) PHILIPS

4 / 28 page

September 1993

Philips Semiconductors

Product speciﬁcation

5-Bit x 64-word FIFO register; 3-state

74HC/HCT7404

Fig.3 Logic symbol.

Pin numbers between parentheses refer to the SO package.

handbook, halfpage

MGA673

16 (18)

2 (2)

15 (16)

14 (15)

13 (14)

12 (13)

11 (12)

1 (1)

(3) 3

10 (11)

(19) 17

(5) 4

(6) 5

(7) 6

(8) 7

(9) 8

DIR

DOR

Fig.4 IEC logic symbol.

Pin numbers between parentheses refer to the SO package.

handbook, halfpage

MGA675

1 ( /C2)

CT = 0

CT 0

CTR

5Z6

1Z3

EN4

[IR] 3

[OR] 6

FIFO 64 x 5

16 (18)

2 (2)

15 (16)

14 (15)

13 (14)

12 (13)

11 (12)

(1) 1

(3) 3

(11) 10

(19) 17

(5) 4

(6) 5

(7) 6

(8) 7

(9) 8

Fig.5 Functional diagram.

Pin numbers between parentheses refer to the SO package.

handbook, full pagewidth

MGA680

16 (18)

2 (2)

1 (1)

3 (3)

(11) 10

17 (19)

DIR

DOR

(5) 4

(6) 5

(7) 6

(8) 7

(9) 8

15 (16)

14 (15)

13 (14)

12 (13)

11 (12)

INPUT

STAGE

1 x 5 BITS

MAIN FIFO

62 x 5 BITS

CONTROL LOGIC

OUTPUT

STAGE

1 x 5 BITS

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