IDT72V3654/72V3664/72V3674 3.3V CMOS SyncBiFIFOTM WITH BUS-MATCHING
2,048 x 36 x 2, 4,096 x 36 x 2 and 8,192 x 36 x 2
COMMERCIAL TEMPERATURE RANGE
TIMING REQUIREMENTS OVER RECOMMENDED RANGES OF SUPPLY
VOLTAGE AND OPERATING FREE-AIR TEMPERATURE
(For 10ns speed grade only: Vcc = 3.3V ± 0.15V; TA = 0° C to +70° C; JEDEC JESD8-A compliant)
IDT72V3654L10(1)
IDT72V3664L10(1)
IDT72V3674L10(1)
IDT72V3654L15
IDT72V3664L15
IDT72V3674L15
Symbol
Parameter
Min.
Max.
Min.
Max.
Unit
fS
Clock Frequency, CLKA or CLKB
tCLK
Clock Cycle Time, CLKA or CLKB
—
100
—
66.7
MHz
10
—
15
—
ns
tCLKH
Pulse Duration, CLKA or CLKB HIGH
4.5
—
6
—
ns
tCLKL
Pulse Duration, CLKA and CLKB LOW
4.5
—
6
—
ns
tDS
Setup Time, A0-A35 before CLKA↑ and B0-B35 before CLKB↑
3
—
4
—
ns
tENS1
Setup Time, CSA and W/RA before CLKA↑; CSB and
W/RB before CLKB↑
4
—
4.5
—
ns
tENS2
Setup Time, ENA, and MBA before CLKA↑; ENB, and
MBB before CLKB↑
3
—
4.5
—
ns
tRSTS
tFSS
Setup Time, MRS1, MRS2, PRS1, or PRS2 LOW before
CLKA↑ or CLKB↑(2)
Setup Time, FS0, FS1, FS2 before MRS1 and MRS2 HIGH
5
—
5
—
ns
7.5
—
7.5
—
ns
tBES
Setup Time, BE/FWFT before MRS1 and MRS2 HIGH
7.5
—
7.5
—
ns
tSDS
tSENS
Setup Time, FS0/SD before CLKA↑
Setup Time, FS1/SEN before CLKA↑
3
—
4
—
ns
3
—
4
—
ns
tFWS
Setup Time, BE/FWFT before CLKA↑
0
—
0
—
ns
tRTMS Setup Time, RTM before RT1; RTM before RT2
5
—
5
—
ns
tDH
Hold Time, A0-A35 after CLKA↑ and B0-B35 after CLKB↑
0.5
—
1
—
ns
tENH
Hold Time, CSA, W/RA, ENA, and MBA after CLKA↑; CSB,
W/RB, ENB, and MBB after CLKB↑
0.5
—
1
—
ns
tRSTH
Hold Time, MRS1, MRS2, PRS1 or PRS2 LOW after CLKA↑
or CLKB↑(2)
4
—
4
—
ns
tFSH
Hold Time, FS0, FS1, FS2 after MRS1 and MRS2 HIGH
2
—
2
—
ns
tBEH
Hold Time, BE/FWFT after MRS1 and MRS2 HIGH
2
—
2
—
ns
tSDH
tSENH
Hold Time, FS0/SD after CLKA↑
Hold Time, FS1/SEN HIGH after CLKA↑
0.5
—
0.5
—
1
—
ns
1
—
ns
tSPH
Hold Time, FS1/SEN HIGH after MRS1 and MRS2 HIGH
2
—
2
—
ns
tRTMH Hold Time, RTM after RT1; RTM after RT2
5
—
5
—
ns
tSKEW1(3) Skew Time between CLKA↑ and CLKB↑ for EFA/ORA,
EFB/ORB, FFA/IRA, and FFB/IRB
5
—
7.5
—
ns
tSKEW2(3,4) Skew Time between CLKA↑ and CLKB↑ for AEA, AEB, AFA,
12
—
12
—
ns
and AFB
NOTES:
1. For 10ns speed grade: Vcc = 3.3V ± 0.15V; TA = 0° to +70°.
2. Requirement to count the clock edge as one of at least four needed to reset a FIFO.
3. 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.
4. Design simulated, not tested.
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