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IDT72131

CMOS PARALLEL-TO-SERIAL FIFO 2048 X 9 4096 X 9

Integrated Device Technology 

IDT72131, IDT72141

CMOS PARALLEL-TO-SERIAL FIFO 2048 x 9 & 4096 x 9

AC ELECTRICAL CHARACTERISTICS

(Commercial: VCC = 5.0V ± 10%, TA = 0°C to +70°C)

Symbol

Parameter

tS

Parallel Shift Frequency

tSOCP Serial-Out Shift Frequency

PARALLEL INPUT TIMINGS

tDS

Data Set-up Time

tDH

Data Hold Time

tWC

Write Cycle Time

tWPW Write Pulse Width

tWR

Write Recovery Time

tWEF

Write High to EF HIGH

tWFF

Write Low to FF LOW

tWF

Write Low to Transitioning HF, AEF

tWPF

Write Pulse Width After FF HIGH

SERIAL OUTPUT TIMINGS

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

tSOLZ

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

tSOPD SOCP Rising Edge to Valid Data on SO

tSOX

SOX Set-up Time to SOCP Rising Edge

tSOCW

tSOCEF

tSOCFF

tSOCF

tREFSO

Serial In Clock Width HIGH/LOW

SOCP Rising Edge (Bit 0 - Last Word) to EF LOW

SOCP Rising Edge to FF HIGH

SOCP Rising Edge to HF, AEF, HIGH

Recovery Time SOCP After EF HIGH

RESET TIMINGS

tRSC

Reset Cycle Time

tRS

Reset Pulse Width

tRSS

Reset Set-up Time

tRSR

tRSF1

tRSF2

Reset Recovery Time

Reset to EF and AEF LOW

Reset to HF and FF HIGH

tRSQL Reset to Q LOW

tRSQH Reset to Q HIGH

RETRANSMIT TIMINGS

tRTC

Retransmit Cycle Time

tRT

Retransmit Pulse Width

tRTS

Retransmit Set-up Time

tRTR

Retransmit Recovery Time

DEPTH EXPANSION MODE TIMINGS

tXOL

Read/Write to XO LOW

tXOH

Read/Write to XO HIGH

tXI

XI Pulse Width

tXIR

XI Recovery Time

tXIS

XI Set-up Time

NOTE:

1. Guaranteed by design minimum times, not tested.

COMMERCIAL TEMPERATURE RANGES

Commercial

IDT72131L35

IDT72141L35

IDT72131L50

IDT72141L50

Min.

Max.

Min.

Max.

—

22.2

—

15

—

50

—

40

Unit

MHz

MHz

18

—

30

—

ns

0

—

5

—

ns

45

—

65

—

ns

35

—

50

—

ns

10

—

15

—

ns

—

30

—

45

ns

—

30

—

45

ns

—

45

—

65

ns

35

—

50

—

ns

5

16

5

26

ns

5

22

5

22

ns

—

18

—

18

ns

5

—

5

—

ns

8

—

10

—

ns

—

20

—

25

ns

—

30

—

40

ns

—

30

—

40

ns

35

—

50

—

ns

45

—

65

—

ns

35

—

50

—

ns

35

—

50

—

ns

10

—

15

—

ns

—

45

—

65

ns

—

45

—

65

ns

20

—

35

—

ns

20

—

35

—

ns

45

—

65

—

ns

35

—

50

—

ns

35

—

50

—

ns

10

—

15

—

ns

—

35

—

50

ns

—

35

—

50

ns

35

—

50

—

ns

10

—

10

—

ns

15

—

15

—

ns

2751 tbl 07

5.34

4

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