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SN74ACT72231L25RJ Datenblatt(Datasheet) 8 Page - Texas Instruments

Teile-Nr. SN74ACT72231L25RJ
Beschreibung  SYNCHRONOUS FIRST-IN FIRST-OUT MEMORIES
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Hersteller  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN74ACT72211L, SN74ACT72221L, SN74ACT72231L, SN74ACT72241L
512 × 9, 1024 × 9, 2048 × 9, AND 4096 × 9
SYNCHRONOUS FIRST IN, FIRST OUT MEMORIES
SCAS222 − FEBRUARY 1993 − REVISED JUNE 1993
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
WCLK
tw(CLKH)
WEN1
No Operation
tc
tw(CLKL)
Data
Valid
D0 − D8
tsu(D)
th(D)
tsu(EN)
th(EN)
WEN2
(if applicable)
No Operation
FF
RCLK
tpd(W-FF)
tpd(W-FF)
tsk1 (see Note A)
REN1,
REN2
NOTE A: tsk1 is the minimum time between a rising RCLK edge and a subsequent rising WCLK edge for FF to change logic levels during the
current clock cycle. If the time between the rising edge of RCLK and the subsequent rising edge of WCLK is less than tsk1, then FF may
not change its logic level until the next WCLK rising edge.
Figure 3. Write-Cycle Timing




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