4

Rev. B

10/23/06

IS61C256AL

-10 ns

-12 ns

Symbol

Parameter

Min.

Max

Min. Max.

Unit

Read Cycle Time

10

—

12

—

ns

Address Access Time

—

10

—

12

ns

Output Hold Time

2

—

2

—

ns

CE Access Time

—

10

—

12

ns

OE Access Time

—

6

—

6

ns

OE to Low-Z Output

0

—

0

—

ns

OE to High-Z Output

—

5

—

6

ns

CE to Low-Z Output

2

—

3

—

ns

CE to High-Z Output

—

5

—

7

ns

CE to Power-Up

0

—

0

—

ns

CE to Power-Down

—

10

—

12

ns

Notes:

1. Test conditions assume signal transition times of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V

and output loading specified in Figure 1.

2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.

3. Not 100% tested.

AC TEST CONDITIONS

Parameter

Unit

Input Pulse Level

0V to 3.0V

Input Rise and Fall Times

3 ns

Input and Output Timing

1.5V

and Reference Levels

Output Load

See Figures 1 and 2

AC TEST LOADS

Figure 2

480

Ω

5 pF

Including

jig and

scope

255

Ω

OUTPUT

5V

480

Ω

30 pF

Including

jig and

scope

255

Ω

OUTPUT

5V

Figure 1