IDT72V81_09 Datasheet, PDF (10/12 Pages) Integrated Device Technology – 3.3 Volt CMOS DUAL ASYNCHRONOUS FIFO DUAL 512 x 9, DUAL 1,024 x 9 DUAL 2,048 x 9, DUAL 4,096 X 9 DUAL 8,192 X 9

IDT72V81/72V82/72V83/72V84/72V85 3.3V CMOS DUAL ASYNCHRONOUS FIFO
512 x 9, 1024 x 9, 2048 x 9, 4096 x 9, 8192 x 9
Q0-Q8
Q9-Q17
Q0-Q8
Q9-Q17
R, W, RS
IDT
72V81/72V82/72V83
72V84/72V85
DEPTH
EXPANSION
BLOCK
IDT
72V81/72V82/72V83
72V84/72V85
DEPTH
EXPANSION
BLOCK
D0-DN
D0-D8
D9-D17
NOTES:
D9-DN
1. For depth expansion block see section on Depth Expansion and Figure 14.
2. For Flag detection see section on Width Expansion and Figure 13.
D18-DN
Figure 15. Compound FIFO Expansion
COMMERCIAL TEMPERATURE RANGE
Q(N-8)-QN
Q(N-8)-QN
IDT
72V81/72V82/72V83
72V84/72V85
DEPTH
EXPANSION
BLOCK
D(N-8)-DN
D(N-8)-DN
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SIDE 1
DATA IN
W
R
EF
DATA OUT
WA
FFA
DA 0-8
QB 0-8
FIFIDOTA
7201A
IDT
72V81
72V82
72V83
72V84
72V85
RA
EFA
HFA
QA 0-8
DA 0-8
SIDE 2
RB
FIFO B
WB
HFB
EFB
FFB
Figure 16. Bidirectional FIFO Mode
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tRPE
tWLZ
tWEF
tA
tREF
DATA ^OUT VALID
Figure 17. Read Data Flow-Through Mode
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FEBRUARY 5, 2009