74hct7403 NXP Semiconductors, 74hct7403 Datasheet - Page 23

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74hct7403

Manufacturer Part Number
74hct7403
Description
4-bit X 64-word Fifo Register; 3-state
Manufacturer
NXP Semiconductors
Datasheet
Philips Semiconductors
Note to Fig.19
This circuit is only required if the SI input is constantly held HIGH, when the FIFO is empty and the automatic shift-in
cycles are started or if SO output is constantly held HIGH, when the FIFO is full and the automatic shift-out cycles are
started (see Figs 7 and 10).
September 1993
handbook, full pagewidth
4-Bit x 64-word FIFO register; 3-state
composite
DIR
Fig.19 Expanded FIFO for increased word length.
Q
Q
Q
Q R
74
CP
CP
D
D
MR
SI
4
4
DIR
SI
DIR
SI
D n
MR
MR
D n
23
7403
7403
DOR
DOR
Q n
SO
OE
SO
OE
Q n
4
4
SO
OE
D
D
CP
CP
74
R
Q
Q
Q
Q
74HC/HCT7403
MGA683
Product specification
composite
DOR

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