8
IDT72V3622/72V3632/72V3642 CMOS 3.3V SyncBiFIFO
TM
256 x 36 x 2, 512 x 36 x 2, 1,024 x 36 x 2
COMMERCIAL TEMPERATURE RANGE
IDT72V3622L10
(1)
IDT72V3622L15
IDT72V3632L10
(1)
IDT72V3632L15
IDT72V3642L10
(1)
IDT72V3642L15
Symbol Parameter Min. Max. Min. Max. Unit
fS Clock Frequency, CLKA or CLKB — 100 — 66.7 MHz
tCLK Clock Cycle Time, CLKA or CLKB 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 before CLKA↑; CSB before CLKB↑ 4 — 4.5 — ns
tENS2 Setup Time ENA, W/RA and MBA before CLKA↑; ENB, W/RB and MBB 3 — 4.5 — ns
before CLKB↑
tRSTS Setup Time, RST1 or RST2 LOW before CLKA↑ or CLKB↑
(2)
5— 5—ns
tFSS
Setup Time, FS0 and FS1 before RST1 and RST2 HIGH
7.5 — 7.5 — ns
tFWS Setup Time, FWFT before CLKA↑ 0— 0—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 0.5 — 1 — ns
MBB after CLKB↑
tRSTH
Hold Time, RST1 or RST2 LOW after CLKA
↑
or CLKB
↑
(2)
4— 4—ns
tFSH Hold Time, FS0 and FS1 after RST1 and RST2 HIGH 2 — 2 — ns
tSKEW1
(3)
Skew Time, between CLKA
↑
and CLKB
↑
for EFA/ORA,
EFB/ORB, FFA/IRA, 7.5 — 7.5 — ns
and FFB/IRB
tSKEW2
(3,4)
Skew Time, between CLKA↑ and CLKB↑ for AEA, AEB, AFA, and AFB 12 — 12 — ns
NOTES:
1.
For 10ns speed grade only: VCC = 3.3V +/- 0.15V, TA = 0
°°
°°
° to +70
°°
°°
°C; JEDEC JESD8-A compliant.
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.
5. Industrial temperature range is available by special order.
TIMING REQUIREMENTS OVER RECOMMENDED RANGES OF SUPPLY
VOLTAGE AND OPERATING TEMPERATURE
Commercial: VCC=3.3V± 0.30V; for 10ns (100 MHz) operation, VCC=3.3V ±0.15V; TA = 0
ο
C to +70
ο
C; JEDEC JESD8-A compliant