IDT7026S/L

HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.17

7

IDT7026X35

IDT7026X55

Symbol

Parameter

Min.

Max.

Min.

Max.

Unit

READ CYCLE

Read Cycle Time

35

—

55

—

ns

Address Access Time

—

35

—

55

ns

Chip Enable Access Time

(3)

—35—55

ns

Byte Enable Access Time

(3)

—35—55

ns

Output Enable Access Time

—

20

—

30

ns

Output Hold from Address Change

3

—

3

—

ns

Output Low-Z Time

(1, 2)

3—

3—

ns

Output High-Z Time

(1, 2)

—15—25

ns

Chip Enable to Power Up Time

(2)

0—

0—

ns

Chip Disable to Power Down Time

(2)

—35—50

ns

Semaphore Flag Update Pulse (

OE or SEM)15

—

15

—

ns

Semaphore Address Access Time

—

35

—

55

ns

AC TEST CONDITIONS

Input Pulse Levels

GND to 3.0V

Input Rise/Fall Times

5ns Max.

Input Timing Reference Levels

1.5V

Output Reference Levels

1.5V

Output Load

Figures 1 and 2

2939 tbl 11

AC ELECTRICAL CHARACTERISTICS OVER THE

IDT7026X20

IDT7026X25

Com'l. Only

Symbol

Parameter

Min.

Max.

Min.

Max.

Unit

READ CYCLE

Read Cycle Time

20

—

25

—

ns

Address Access Time

—

20

—

25

ns

Chip Enable Access Time

(3)

—20—25

ns

Byte Enable Access Time

(3)

—20—25

ns

Output Enable Access Time

—

12

—

13

ns

Output Hold from Address Change

3

—

3

—

ns

Output Low-Z Time

(1, 2)

3—

3—

ns

Output High-Z Time

(1, 2)

—12—15

ns

Chip Enable to Power Up Time

(2)

0—

0—

ns

Chip Disable to Power Down Time

(2)

—20—25

ns

Semaphore Flag Update Pulse (

OE or SEM)10

—

12

—

ns

Semaphore Address Access Time

—

20

—

25

ns

2939 tbl 12

2939 drw 05

893

Ω

30pF

347

Ω

5V

BUSY

INT

893

Ω

5pF

347

Ω

5V

2939 drw 04

Figure 1. AC Output Load

Figure 2. Output Test Load

* Including scope and jig.

NOTES:

1. Transition is measured

±200mV 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 numbers indicates power rating (S or L).