74ACT2708PC datasheet(7/13 Pages) FAIRCHILD

номер детали	74ACT2708PC

подробное описание детали	64 x 9 First-In, First-Out Memory

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производитель	FAIRCHILD [Fairchild Semiconductor]

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Mode 4: Shift-Out Sequence, FIFO Full to Empty

Sequence of Operation

1. FIFO is initially full and OR is HIGH, indicating valid

data is at the output. IR is LOW.

2. SO goes HIGH, resulting in OR going LOW one propa-

gation delay, tOR, after SO rises. OR LOW indicates

output stage is busy.

3. SO goes LOW, new data reaches output one propaga-

tion delay, tD, after SO falls; OR goes HIGH one propa-

gation delay, tOR, after SO falls and HF rises one

propagation delay, tOF, after SO falls. IR rises one fall-

through time, tFT, after SO falls.

4. Repeat process through the 64th SO pulse. FULL flag

goes LOW one propagation delay, tOHF, after the rising

edge of 33rd SO, indicating that the FIFO is less than

half full. On the falling edge of the 64th SO, HF goes

LOW one propagation delay, tOE, after SO, indicating

the FIFO is empty. The SO pulse may rise and fall

again with an attempt to unload an empty FIFO. This

results in no change in the data on the outputs as the

64th word stays latched.

Note: SI and OE are LOW; MR is HIGH; D0–D8 are immaterial.

FIGURE 4. Modes of Operation Mode 4

Аналогичный номер детали - 74ACT2708PC

производитель	номер детали	датащи	подробное описание детали
STMicroelectronics	74ACT273	77Kb / 11P	OCTAL D-TYPE FLIP FLOP WITH CLEAR
Fairchild Semiconductor	74ACT273	122Kb / 10P	Octal D-Type Flip-Flop
ON Semiconductor	74ACT273	111Kb / 8P	Octal D Flip?묯lop December, 2005 ??Rev. 6
Fairchild Semiconductor	74ACT273	383Kb / 12P	Octal D-Type Flip-Flop
STMicroelectronics	74ACT273B	77Kb / 11P	OCTAL D-TYPE FLIP FLOP WITH CLEAR

производитель	номер детали	датащи	подробное описание детали
Texas Instruments	SN74ACT7814-40DL	525Kb / 16P	[Old version datasheet] 64 x 18 STROBED FIRST-IN, FIRST-OUT MEMORY
	SN74ALS234	206Kb / 11P	[Old version datasheet] 64 X 4 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY
	SN74ALS235	275Kb / 15P	[Old version datasheet] 64 X 5 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY
Advanced Micro Devices	C67401	450Kb / 9P	FIRST - IN FIRST - OUT (FIFO) 64 X 4, 64 X 5 CASCADABLE MEMORY
Texas Instruments	SN74ACT7813-40DLR	396Kb / 18P	[Old version datasheet] 64 x18 CLOCKED FIRST-IN, FIRST-OUT MEMORY
List of Unclassifed Man...	TDC1030	226Kb / 14P	FIRST-IN FIRST-OUT MEMORY
Texas Instruments	SN74ALS236	174Kb / 11P	[Old version datasheet] 64 횞 4 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY
	SN74ACT7813	194Kb / 14P	[Old version datasheet] 64 횞 18 CLOCKED FIRST-IN, FIRST-OUT MEMORY
	SN74ACT7813	231Kb / 16P	[Old version datasheet] 64 횞 18 CLOCKED FIRST-IN, FIRST-OUT MEMORY
	SN74ABT3611	368Kb / 26P	[Old version datasheet] 64 횞 36 CLOCKED FIRST-IN, FIRST-OUT MEMORY