IDT72221L25J IDT, Integrated Device Technology Inc, IDT72221L25J Datasheet - Page 10

• Manufacturer Part Number: IDT72221L25J
• Description: IC FIFO SYNC 1KX9 25NS 32PLCC
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72221L25J

• Function: Synchronous
• Memory Size: 9K (1K x 9)
• Data Rate: 40MHz
• Access Time: 25ns
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72221L25J

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NOTE:
1. Only one of the two write enable inputs, WEN1 or WEN2, needs to go inactive to inhibit writes to the FIFO.
NOTE:
1. When t
IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™
64 x 9, 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9
(If Applicable)
(If Applicable)
When
The Latency Timings apply only at the Empty Boundary (EF = LOW).
Q
D
WCLK
t
WEN1
WEN2
REN1,
Q
RCLK
REN2
0
D
SKEW1
SKEW1
0
WCLK
WEN2
WEN1
- Q
REN1,
REN2
0
RCLK
- D
0
OE LOW
FF
- Q
- D
8
OE
8
EF
≥ minimum specification, t
< minimum specification, t
8
DATA IN OUTPUT REGISTER
8
t
DATA IN OUTPUT REGISTER
LOW
t
t
ENS
ENS
DS
t
ENS
DATA WRITE 1
t
NO WRITE
SKEW1
t
t
SKEW1
ENH
t
ENH
FRL
FRL
t
maximum = t
maximum = 2t
ENH
t
t
FRL
A
t
CLK
WFF
t
CLK
(1)
REF
+ t
+ t
SKEW1
SKEW1
t
t
ENS
ENS
t
DS
Figure 9. Empty Flag Timing
or t
Figure 8. Full Flag Timing
CLK
+ t
SKEW1
t
WFF
10
t
t
DATA READ
t
ENH
ENH
REF
t
A
t
t
ENS
ENS
t
t
ENS
DS
NO WRITE
DATA WRITE 2
t
ENH
t
A
t
t
t
ENH
SKEW1
ENH
t
DATA READ
SKEW1
COMMERCIAL AND INDUSTRIAL
t
WFF
NEXT DATA READ
t
TEMPERATURE RANGES
FFL
t
t
ENS
ENS
t
REF
(1)
(1)
(1)
OCTOBER 22, 2008
NO WRITE
2655 drw 11
2655 drw 10