IDT72605L20J IDT, Integrated Device Technology Inc, IDT72605L20J Datasheet - Page 15

• Manufacturer Part Number: IDT72605L20J
• Description: IC FIFO BI SYNC 256X18 68-PLCC
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72605L20J

• Function: Synchronous
• Memory Size: 9.2K (512 x 18)
• Data Rate: 50MHz
• Access Time: 20ns
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Configuration: Dual
• Density: 9Kb
• Access Time (max): 10ns
• Word Size: 18b
• Organization: 256x18x2
• Sync/async: Synchronous
• Expandable: No
• Bus Direction: Bi-Directional
• Package Type: PLCC
• Clock Freq (max): 50MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 230mA
• 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: 72605L20J

NOTES:
1. t
2. If a read is performed on this rising edge of the read clock, there will be Empty + (n + 1) words in the FIFO when PAE goes LOW.
NOTES:
1. t
2. If a write is performed on this rising edge of the write clock, there will be Full - (m + 1) words in the FIFO when PAF goes LOW.
IDT72605/72615 CMOS SYNCBiFIFO™
256 x 18x 2 and 512 x 18 x 2
(R/W
(R/W
(R/W
(R/W
the rising edge of CLK
and the rising edge of CLK
SKEW2
SKEW2
PAE
PAF
A
B
CLK
A
CLK
B
CLK
CLK
EN
EN
EN
EN
= 0)
= 1)
= 0)
= 1)
the minimum time between a rising CLK
is the minimum time between a rising CLK
AB
AB
B
A
A
A
A
B
B
A
t
t
CLKH
CLKH
B
is less than t
A
n words in FIFO
is less than t
t
SKEW2
t
t
CS
CS
t
t
Full - (m+1) words in FIFO
CLKL
CLKL
SKEW
WRITE
(1)
WRITE
SKEW2
, then PAE
A
Figure 12. A → → → → → B Programmable Almost-Empty Flag Timing
, then PAF
Figure 13. A → → → → → B Programmable Almost-Full Flag Timing
edge and a rising CLK
B
t
t
CH
CH
edge and a rising CLK
AB
may not go HIGH until the next CLKB rising edge.
t
PAE
AB
may not go HIGH until the next CLK
(2)
B
edge for PAE
A
t
PAF
edge for PAF
15
AB
AB
to change during that clock cycle. If the time between the rising edge of CLK
to change during that clock cycle. If the time between the rising edge of CLK
n+1 words in FIFO
t
CS
A
Full - m words in FIFO
rising edge.
READ
t
CS
t
CH
READ
INDUSTRIAL TEMPERATURE RANGE
t
CH
(2)
t
PAF
t
PAE
2704 drw 15
2704 drw 16
A
and
B