74act2708 Fairchild Semiconductor, 74act2708 Datasheet - Page 8

no-image

74act2708

Manufacturer Part Number
74act2708
Description
64 X 9 First-in, First-out Memory
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
74act2708PC
Manufacturer:
TI
Quantity:
658
www.fairchildsemi.com
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
,

Related parts for 74act2708