74HC7403 Datasheet, PDF (18/28 Pages) NXP Semiconductors – 4-Bit x 64-word FIFO register; 3-state

Philips Semiconductors
4-Bit x 64-word FIFO register; 3-state
Shift-out operation; high-speed burst mode
Product specification
74HC/HCT7403
handbook, full pagewidth
SO INPUT
1/f _max
tW
VM ⁽¹⁾
Qn OUTPUT
DOR OUTPUT
MGA663
(1) HC : V_M = 50%; V_I = GND to V_CC.
HCT: V_M = 1.3 V; V_I = GND to 3 V.
Fig.12 Waveforms showing SO minimum pulse width and maximum pulse frequency, in high-speed shift-out
burst mode.
Note to Fig.12
In the high-speed mode, the burst-out rate is determined by the minimum shift-out HIGH and shift-out LOW
specifications. The DOR flag is a don't care condition and an SO pulse can be applied without regard to the flag.
September 1993
18