74ACT2708PC Fairchild Semiconductor, 74ACT2708PC Datasheet - Page 8

• Manufacturer Part Number: 74ACT2708PC
• Description: IC MEMORY FIRST OUT 64X9 28-DIP
• Manufacturer: Fairchild Semiconductor
• Series: 74ACTr

Specifications of 74ACT2708PC

• Function: Asynchronous, Synchronous
• Memory Size: 576 (9 x 64)
• Data Rate: 60MHz
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Access Time: -
• Other names: 74ACT2708

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Mode 5: With FIFO Empty, Shift-Out is Held HIGH
in Anticipation of Data
Sequence of Operation
1. FIFO is initially empty; Shift-Out goes HIGH.
2. Shift-In pulse loads data into the FIFO and IR falls. HF
3. OR rises a fall-through time of t
Note: FULL is LOW; MRis HIGH; OE is LOW; t
rises propagation delay t
edge of Shift-In, indicating that new data is ready to be
output.
X1
after the falling edge of SI.
DOF
FTO
FIGURE 5. Modes of Operation Mode 5
t
FTO
after the falling
t
OD5
. Data output transition—valid data arrives at output stage t
8
4. Data arrives at output one propagation delay, t
5. OR goes LOW pulse width t
6. Shift-Out goes LOW, necessary to complete the Shift-
after the falling edge of Shift-In.
goes LOW pulse width t
the FIFO is empty once more.
Out process.
X3
after rising, indicating that
DOF
OP
after OR is HIGH.
after rising and HF
OD5
,