SN74S225 Datasheet, PDF (8/10 Pages) Texas Instruments – 16 × 5 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY WITH 3-STATE OUTPUTS

SN74S225
16 × 5 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY
WITH 3-STATE OUTPUTS
SDLS207B – SEPTEMBER 1976 – REVISED APRIL 1998
APPLICATION INFORMATION
CLR
ÎÎÎÎ ^CLKA
CLK_{ÎÎÎÎDB ÎÎÎÎÎÎÎÎÎÎÎÎÎÎWorÎÎd1 ÎÎÎÎÎÎWoÎÎrd2ÎÎWorÎÎd3WÎÎordÎÎ16 ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ}
UNCI_ÎÎKN _{ÎÎÎÎÎÎ}
is Low
IR
UNCK
OUT
OR
Q
Word 1
Word 1
Word 2
Word 3 Word
16
Load
Words 3–15
Unload
Word 1
Unload
Words 3–15
Clear Load
Word 1
Load
Word 2
Load
Word 16
Unload
Word 2
Figure 2. Typical Waveforms for a 16-Word FIFO
Unload
Word 16
8
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