74hct7403 NXP Semiconductors, 74hct7403 Datasheet - Page 17

• Manufacturer Part Number: 74hct7403
• Description: 4-bit X 64-word Fifo Register; 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Shift-in operation; high-speed burst mode
Note to Fig.11
In the high-speed mode, the burst-in rate is determined by the minimum shift-in HIGH and shift-in LOW specifications.
The DIR status flag is a don't care condition, and a shift-in pulse can be applied regardless of the flag. A SI pulse which
would overflow the storage capacity of the FIFO is ignored.
September 1993
handbook, full pagewidth
4-Bit x 64-word FIFO register; 3-state
(1) HC : V
Fig.11 Waveforms showing SI minimum pulse width and maximum pulse frequency, in high-speed shift-in burst
HCT: V
mode.
M
M
= 50%; V
= 1.3 V; V
I
SI INPUT
DIR OUTPUT
D n INPUT
= GND to V
I
= GND to 3 V.
CC
.
V M
(1)
t W
1/ f max
17
MGA662
74HC/HCT7403
Product specification