SN74ACT7811

1024

× 18

CLOCKED FIRST-IN, FIRST-OUT MEMORY

SCAS151C – JANUARY 1991 – REVISED FEBRUARY 1996

12

POST OFFICE BOX 655303

switching characteristics over recommended operating free-air temperature range (see Figures 9

and 10)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

RL = 500 Ω,

TA = 0°C to 70°C

UNIT

(INPUT)

(OUTPUT)

′ACT7811-15

′ACT7811-18

′ACT7811-20

′ACT7811-25

MIN

TYP

MAX

MIN

MAX

MIN

MAX

MIN

MAX

fmax

WRTCLK or

RDCLK

40

35

28.5

16.7

MHz

tpd

RDCLK

↑

Any Q

4

12

15

4

18

4

20

4

25

ns

tpd†

RDCLK

↑

Any Q

10.5

ns

tpd

WRTCLK

↑

IR

2

10

2

12

2

14

2

16

ns

tpd

RDCLK

↑

OR

2

10

2

12

2

14

2

16

ns

t d

WRTCLK

↑

AF/AE

6

20

6

22

6

24

6

26

ns

tpd

RDCLK

↑

AF/AE

6

20

6

22

6

24

6

26

ns

tPLH

WRTCLK

↑

HF

6

19

6

21

6

23

6

25

ns

tPHL

RDCLK

↑

HF

6

19

6

21

6

23

6

25

ns

tPLH

RESET

↓

AF/AE

3

19

3

21

3

23

3

25

ns

tPHL

RESET

↓

HF

4

21

4

23

4

25

4

27

ns

ten

OE

Any Q

2

11

2

11

2

11

2

11

ns

tdis

OE

Any Q

2

14

2

14

2

14

2

14

ns

† This parameter is measured with CL = 30 pF (see Figure 5).

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance per 1K bits

CL = 50 pF, f = 5 MHz

65

pF