IDT72205LB15JI8 IDT, Integrated Device Technology Inc, IDT72205LB15JI8 Datasheet - Page 8
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IDT72205LB15JI8
Manufacturer Part Number
IDT72205LB15JI8
Description
IC FIFO 256X18 SYNC 15NS 68-PLCC
Manufacturer
IDT, Integrated Device Technology Inc
Series
7200r
Datasheet
1.IDT72225LB10PFG.pdf
(16 pages)
Specifications of IDT72205LB15JI8
Function
Synchronous
Memory Size
4.6K (256 x 18)
Data Rate
67MHz
Access Time
15ns
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
72205LB15JI8
Available stocks
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Part Number
Manufacturer
Quantity
Price
write cycle, the Half-Full Flag goes LOW and will remain set until the difference
between the write pointer and read pointer is less than or equal to one half of
the total memory of the device. The Half-Full Flag (HF) is then reset to HIGH
by the LOW-to-HIGH transition of the Read Clock (RCLK). The HF is
asynchronous.
the previous device. This output acts as a signal to the next device in the Daisy
Chain by providing a pulse when the previous device writes to the last location
of memory.
NOTES:
1. After reset, the outputs will be LOW if OE = 0 and tri-state if OE = 1.
2. The clocks (RCLK, WCLK) can be free-running during reset.
IDT72205LB/72215LB/72225LB/72235LB/72245LB CMOS SyncFIFO
256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18
After half of the memory is filled, and at the LOW-to-HIGH transition of the next
In the Daisy Chain Depth Expansion mode, WXI is connected to WXO of
,
,
Q
0
,
- Q
,
,
17
t
t
t
RSF
RSF
RSF
t
RS
Figure 4. Reset Timing
t
RSS
8
READ EXPANSION OUT (RXO)
(RXI) is connected to Read Expansion Out (RXO) of the previous device. This
output acts as a signal to the next device in the Daisy Chain by providing a pulse
when the previous device reads from the last location of memory.
DATA OUTPUTS (Q0-Q17)
TM
In the Daisy Chain Depth Expansion configuration, Read Expansion In
Q
0
-Q
17
(2)
are data outputs for 18-bit wide data.
t
RSR
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
= 1
= 0
OCTOBER 22, 2008
(1)
2766 drw 06