8

COMMERCIALTEMPERATURERANGE

IDT723623/723633/723643 BUS-MATCHING SyncFIFO™

256 x 36, 512 x 36, 1,024 x 36

Symbol

Parameter

Min.

Max.

Min.

Max. Unit

Clock Frequency, CLKA or CLKB

—

83

—

66.7 MHz

Clock Cycle Time, CLKA or CLKB

12

—

15

—

ns

Pulse Duration, CLKA or CLKB HIGH

5

—

6

—

ns

Pulse Duration, CLKA and CLKB LOW

5

—

6

⎯

ns

Setup Time, A0-A35 before CLKA

↑ and B0-B35 before CLKB↑

3—

4

⎯

ns

Setup Time, CSA and W/RA before CLKA

↑; CSB and W/RB before CLKB↑

4

—

4.5

—

ns

Setup Time, ENA and MBA before CLKA

↑; ENB and MBB before CLKB↑

3

—

4.5

—

ns

Setup Time, RS1 or PRS LOW before CLKA

5

—

5

—

ns

Setup Time, FS0 and FS1 before RS1 HIGH

7.5

—

7.5

—

ns

Setup Time, BE/FWFT before RS1 HIGH

7.5

—

7.5

—

ns

Setup Time, SPM before RS1 HIGH

7.5

—

7.5

—

ns

Setup Time, FS0/SD before CLKA

↑

3

—

4

—

ns

Setup Time, FS1/SEN before CLKA

↑

3

—

4

—

ns

Setup Time, FWFT before CLKA

↑

0

—

0

—

ns

Hold Time, A0-A35 after CLKA

↑ and B0-B35 after CLKB↑

0.5

—

1

—

ns

Hold Time, CSA, W/RA, ENA, and MBA after CLKA

↑; CSB, W/RB,ENB, and MBB after CLKB↑

0.5

—

1

—

ns

Hold Time, RS1 or PRS LOW after CLKA

4

—

4

—

ns

Hold Time, FS0 and FS1 after RS1 HIGH

2

—

2

—

ns

Hold Time, BE/FWFT after RS1 HIGH

2

—

2

—

ns

Hold Time, SPM after RS1 HIGH

2

—

2

—

ns

Hold Time, FS0/SD after CLKA

↑

0.5

—

1

—

ns

Hold Time, FS1/SEN HIGH after CLKA

↑

0.5

—

1

—

ns

Hold Time, FS1/SEN HIGH after RS1 HIGH

2

—

2

—

ns

↑ and CLKB↑ for EF/OR and FF/IR

5

—

7.5

—

ns

↑ and CLKB↑ for AE and AF

12

—

12

—

ns

TIMING REQUIREMENTS OVER RECOMMENDED RANGES OF SUPPLY

VOLTAGE AND OPERATING FREE-AIR TEMPERATURE

NOTES:

1. Requirement to count the clock edge as one of at least four needed to reset a FIFO.

2. Skew time is not a timing constraint for proper device operation and is only included to illustrate the timing relationship between CLKA cycle and CLKB cycle.

3. Design simulated, not tested.

°C to +70°C)

Commercial

IDT723623L12 IDT723623L15

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IDT723643L12 IDT723643L15