SN74ACT7200L, SN74ACT7201LA, SN74ACT7202LA

256

× 9, 512 × 9, 1024 × 9

ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORIES

SCAS221A – FEBRUARY 1993 – REVISED SEPTEMBER 1995

2

POST OFFICE BOX 655303

5

D1

Q1

10

4

D2

Q2

11

3

D3

Q3

12

27

D4

Q4

16

26

D5

Q5

17

25

D6

Q6

18

24

D7

Q7

19

2

D8

Q8

13

1D

6

D0

Q0

9

2,4 CT = 0 (RST)

22

FIFO 256

× 9

Φ

SN74ACT7200L

3

1

G2

(EXPAND)

7

(1ST LOAD)

23

2,4 (REXMIT)

15

G4

(CT = WR PNTR – RD PNTR)

6 (WR PNTR)

6 C1

5 (RD PNTR)

5EN3

(CT = 256) G6

8

21

(CT = 0) G5

20

(EXPAND)

CT > 128

2(CT = 255) G6

4(CT = 255) G6

RS

W

XI

FL /RT

R

FF

EF

XO/HF

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the DV and NP packages.