IDT72261LA20PF IDT, Integrated Device Technology Inc, IDT72261LA20PF Datasheet - Page 11

• Manufacturer Part Number: IDT72261LA20PF
• Description: IC FIFO 8192X18 LP 20NS 64QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT72261LA20PF

• Function: Synchronous
• Memory Size: 144K (8K 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: 64-TQFP, 64-VQFP
• Configuration: Dual
• Density: 144Kb
• Access Time (max): 12ns
• Word Size: 9b
• Organization: 16Kx9
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• Clock Freq (max): 50MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 75mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72261LA20PF

Retransmit setup by setting OR HIGH. During this period, the internal read
pointer is set to the first location of the RAM array.
the contents of the first location appear on the outputs. Since FWFT mode
is selected, the first word appears on the outputs, no LOW on REN is
necessary. Reading all subsequent words requires a LOW on REN to
enable the rising edge of RCLK. See Figure 12, Retransmit Timing (FWFT
Mode), for the relevant timing diagram.
IDT72261LA/72271LA SuperSync FIFO™
16,384 x 9 and 32,768 x 9
If FWFT mode is selected, the FIFO will mark the beginning of the
When OR goes LOW, Retransmit setup is complete; at the same time,
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and PAF flags begin with the rising edge of RCLK that RT is setup. PAE
is synchronized to RCLK, thus on the second rising edge of RCLK after RT
is setup, the PAE flag will be updated. HF is asynchronous, thus the rising
edge of RCLK that RT is setup will update HF. PAF is synchronized to
WCLK, thus the second rising edge of WCLK that occurs t
rising edge of RCLK that RT is setup will update PAF. RT is synchronized
to RCLK.
For either IDT Standard mode or FWFT mode, updating of the PAE, HF
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
JANUARY 7, 2009
SKEW
after the