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IDT72105

CMOS PARALLEL-TO-SERIAL FIFO 256 x 16, 512 x 16, 1024 x 16

Integrated Device Technology 

IDT72105, IDT72115, IDT72125,

256 x 16, 512 x 16, 1024 x 16 PARALLEL-TO-SERIAL CMOS FIFO

AC ELECTRICAL CHARACTERISTICS

(Commercial: VCC = 5V±10%, TA = 0°C to +70°C)

Symbol

Parameter

tS

Parallel Shift Frequency

tSOCP

Serial Shift Frequency

PARALLEL INPUT TIMINGS

tWC

Write Cycle Time

tWPW

Write Pulse Width

tWR

Write Recovery Time

tDS

Data Set-up Time

tDH

tWEF

tWFF

tWF

tWPF

Data Hold Time

Write High to EF HIGH

Write Low to FF LOW

Write Low to Transitioning HF, AEF

Write Pulse Width After FF HIGH

SERIAL OUTPUT TIMINGS

tSOCP

Serial Clock Cycle Time

tSOCW

Serial Clock Width HIGH/LOW

tSOPD

tSOHZ

tSOLZ

tSOCEF

tSOCFF

SOCP Rising Edge to SO Valid Data

SOCP Rising Edge to SO at High-Z (1)

SOCP Rising Edge to SO at Low-Z (1)

SOCP Rising Edge to EF LOW

SOCP Rising Edge to FF HIGH

tSOCF

tREFSO

SOCP Rising Edge to Transitioning

HF, AEF

SOCP Delay After EF HIGH

RESET TIMINGS

tRSC

Reset Cycle Time

tRS

Reset Pulse Width

tRSS

Reset Set-up Time

tRSR

Reset Recovery Time

EXPANSION MODE TIMINGS

tFLS

FL Set-up Time to RS Rising Edge

tFLH

FL Hold Time to RS Rising Edge

tDIRS

DIR Set-up Time to SOCP Rising

Edge

tDIRH

DIR Hold Time from SOCP Rising

Edge

tSOXD1

SOCP Rising Edge to RSOX Rising

Edge

tSOXD2

SOCP Rising Edge to RSOX Falling

Edge

tSIXS

RSIX Set-up Time to SOCP Rising

Edge

tSIXPW

RSIX Pulse Width

NOTE:

1. Values guaranteed by design.

Figure

—

—

2

2

2

2

2

5, 6

4, 7

8

7

3

3

3

3

3

5, 6

4, 7

8

6

1

1

1

1

9

9

9

9

9

9

9

9

COMMERCIAL TEMPERATURE RANGES

COM'L

72105L25

72115L25

72125L25

Min.

Max.

72105L50

72115L50

72125L50

Min.

Max.

—

28.5

—

15

—

50

—

40

35

—

65

—

25

—

50

—

10

—

15

—

12

—

15

—

0

—

2

—

—

35

—

45

—

35

—

45

—

35

—

45

25

—

50

—

20

—

25

—

8

—

10

—

—

14

—

15

3

14

3

15

3

14

3

15

—

35

—

45

—

35

—

45

—

35

—

45

35

—

65

—

35

—

65

—

25

—

50

—

25

—

50

—

10

—

15

—

7

—

8

—

0

—

2

—

10

—

12

—

5

—

5

—

—

15

—

17

—

15

—

17

5

—

8

—

10

—

15

—

Unit

MHz

MHz

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

2665 tbl 06

5.35

4

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