IDT72205LB15JI IDT, Integrated Device Technology Inc, IDT72205LB15JI Datasheet - Page 9

• Manufacturer Part Number: IDT72205LB15JI
• Description: IC FIFO 256X18 SYNC 15NS 68-PLCC
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72205LB15JI

• 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
• Configuration: Dual
• Density: 4.5Kb
• Access Time (max): 10ns
• Word Size: 18b
• Organization: 256x18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: PLCC
• Clock Freq (max): 66.7MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 60mA
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 68
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72205LB15JI

NOTE:
1. t
NOTE:
1. t
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
Q
D
edge of RCLK and the rising edge of WCLK is less than t
0
WCLK
edge of WCLK and the rising edge of RCLK is less than t
SKEW1
RCLK
WCLK
0
SKEW2
RCLK
- Q
- D
17
is the minimum time between a rising RCLK edge and a rising WCLK edge to guarantee that FF will go HIGH during the current clock cycle. If the time between the rising
17
is the minimum time between a rising WCLK edge and a rising RCLK edge to guarantee that EF will go HIGH during the current clock cycle. If the time between the rising
t
ENS
t
OLZ
t
SKEW1
t
t
ENH
t
CLKH
CLKH
(1)
t
WFF
t
t
A
REF
t
SKEW1
OE
SKEW2
t
CLK
, then FF may not change state until the next WCLK edge.
, then EF may not change state until the next RCLK edge.
t
DATA IN VALID
CLK
Figure 5. Write Cycle Timing
Figure 6. Read Cycle Timing
NO OPERATION
t
SKEW2
t
t
CLKL
t
CLKL
DS
(1)
t
ENS
9
TM
VALID DATA
t
t
ENH
DH
t
t
REF
WFF
t
OHZ
COMMERCIAL AND INDUSTRIAL
NO OPERATION
TEMPERATURE RANGES
OCTOBER 22, 2008
2766 drw 07
2766 drw 08