6.42

IDT70V35/34S/L

(IDT70V25/24S/L)

High-Speed 3.3V 8/4K x 18 (8/4K x 16) Dual-Port Static RAM

Industrial and Commercial Temperature Ranges

10

NOTES:

1. Timing depends on which signal is asserted last,

OE, CE, LB, or UB.

2. Timing depends on which signal is de-asserted first,

CE, OE, LB, or UB.

BUSY

has no relation to valid output data.

5.

R/

W

CE

ADDR

OE

UB, LB

5624 drw 08

(4)

(4)

(4)

(4)

(1)

(2)

(3,4)

VALID DATA

(4)

AC Electrical Characteristics Over the Operating

NOTES:

1. Transition is measured 0mV from Low or High-impedance voltage with Output Test Load (Figure 2).

2. This parameter is guaranteed by device characterization, but is not production tested.

3. To access RAM,

4. 'X' in part number indicates power rating (S or L).

70V35/34X15

Com'l Only

70V35/34X20

Com'l

& Ind

70V35/34X25

Com'l Only

Unit

Symbol

Parameter

Min.Max.Min.Max.Min.Max.

READ CYCLE

Read Cycle Time

15

____

20

____

25

____

ns

Address Access Time

____

15

____

20

____

25

ns

____

15

____

20

____

25

ns

____

15

____

20

____

25

ns

____

10

____

12

____

13

ns

Output Hold from Address Change

3

____

3

____

3

____

ns

Output Low-Z Time

(1,2)

3

____

3

____

3

____

ns

____

10

____

12

____

15

ns

0

____

0

____

0

____

ns

____

15

____

20

____

25

ns

Semaphore Flag Update Pulse (

OE or SEM)10

____

10

____

10

____

ns

____

15

____

20

____

25

ns

5624 tbl 11