SN74ALVC7803

512

× 18

CLOCKED FIRST-IN, FIRST-OUT MEMORY

SDAS274 – JANUARY 1995

9

POST OFFICE BOX 655303

recommended operating conditions

VCC = 3.3 V " 0.3 V VCC = 3.3 V " 0.3 V VCC = 3.3 V " 0.3 V

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

VIH

High-level input voltage

2

2

2

V

VIL

Low-level input voltage

0.8

0.8

0.8

V

I

OH

High-level output current,

VCC =3 V

8

8

8

I

OH

g,

Q outputs, flags

VCC = 3V

– 8

– 8

– 8

mA

IOL

Low-level output current,

VCC =3V

16

16

16

mA

IOL

,

Q outputs, flags

VCC = 3 V

16

16

16

fclock

Clock frequency

50

40

25

MHz

D0 – D17 high or low

9

10

14

WRTCLK high or

low

7

8

12

RDCLK high or low

7

8

12

tw

Pulse duration

PEN low

9

9

12

ns

w

WRTEN1 high,

8

8

12

g,

WRTEN2 low

8

8

12

OE1, OE2 low

9

9

12

RDEN low

8

8

12

D0 – D17 before

WRTCLK

↑

5

5

5

WRTEN1, WRTEN2

before WRTCLK

↑

5

5

5

OE1, OE2 before

RDCLK

↑

5

6

6

tsu

Setup time

RDEN before

RDCLK

↑

5

5

7

ns

Reset: RESET low

before first

WRTCLK

↑ and

RDCLK

↑†

6

6

6

PEN before

WRTCLK

↑

6

6

6

D0 – D17 after

WRTCLK

↑

0

0

0

WRTEN1, WRTEN2

after WRTCLK

↑

0

0

0

th

Hold time

OE1, OE2, RDEN

after RDCLK

↑

0

0

0

ns

th

Hold time

Reset: RESET low

after fourth

WRTCLK

↑ and

RDCLK

↑†

2

2

2

ns

PEN low after

WRTCLK

↑

2

2

2

TA

Operating free-air temperature

0

70

0

70

0

70

°C

† To permit the clock pulse to be utilized for reset purposes