5

256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18

COMMERCIALANDINDUSTRIAL

TEMPERATURERANGES

MARCH 2013

AC ELECTRICAL CHARACTERISTICS

(Commercial: VCC = 5V ± 10%, TA = 0°C to +70°C; Industrial: VCC = 5V ± 10%, TA = -40°C to +85°C)

Commercial

IDT72205LB10

IDT72205LB15

IDT72205LB25

IDT72215LB10

IDT72215LB15

IDT72215LB25

IDT72225LB10

IDT72225LB15

IDT72225LB25

IDT72235LB10

IDT72235LB15

IDT72235LB25

IDT72245LB10

IDT72245LB15

IDT72245LB25

Symbol

Parameter

Min.

Max.

Min.

Max.

Min.

Max.

Unit

Clock Cycle Frequency

—

100

—

66.7

—

40

MHz

DataAccessTime

2

6.5

2

10

2

15

ns

Clock Cycle Time

10

—

15

—

25

—

ns

Clock HIGH Time

4.5

—

6

—

10

—

ns

Clock LOW Time

4.5

—

6

—

10

—

ns

DataSet-upTime

3

—

4

—

6

—

ns

DataHoldTime

0

—

1

—

1

—

ns

EnableSet-upTime

3

—

4

—

6

—

ns

EnableHoldTime

0

—

1

—

1

—

ns

10

—

15

—

25

—

ns

ResetSet-upTime

8

—

10

—

15

—

ns

Reset Recovery Time

8

—

10

—

15

—

ns

ResettoFlagandOutputTime

—

15

—

20

—

25

ns

0—

0—

0—

ns

OutputEnabletoOutputValid

3

6

3

8

3

12

ns

36

38

3

12

ns

Write Clock to Full Flag

—

6.5

—

10

—

15

ns

Read Clock to Empty Flag

—

6.5

—

10

—

15

ns

ClocktoAsynchronousProgrammableAlmost-FullFlag

—

17

—

24

—

26

ns

Clock to Programmable Almost-Empty Flag

—

17

—

24

—

26

ns

Clock to Half-Full Flag

—

17

—

24

—

26

ns

Clock to Expansion Out

—

6.5

—

10

—

15

ns

Expansion In Pulse Width

3

—

6.5

—

10

—

ns

Expansion In Set-Up Time

3.5

—

5

—

10

—

ns

Skew time between Read Clock & Write Clock forFull Flag

5

—

6

—

10

—

ns

Skew time between Read Clock & Write Clock for Empty Flag

5—

6—

10

—

ns

Input Pulse Levels

GND to 3.0V

InputRise/FallTimes

3ns

InputTimingReferenceLevels

1.5V

OutputReferenceLevels

1.5V

OutputLoad

See Figure 1

AC TEST CONDITIONS

Figure 1. Output Load

* Includes jig and scope capacitances.

30pF*

1.1K

5V

680

Ω

D.U.T.

2766 drw 04

NOTES:

1. Industrial temperature range product for the 15ns and the 25ns speed grades are available as a standard device. All other speed grades are available by special order.

2. Pulse widths less than minimum values are not allowed.

3. Values guaranteed by design, not currently tested.