Philips Semiconductors Product specification
74F821/822/823/824/825/826Bus interface registers
1996 Jan 05
13
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
t
PHL
CP
V
M
V
M
V
M
t
w
(H)
1/f
max
V
M
V
M
t
PHL
t
w
(L)
t
PLH
Qn
V
M
V
M
Qn
t
PLH
SF00506
Waveform 1. Propagation delay for clock input to output,
clock pulse width, and maximum clock frequency
V
M
V
M
V
M
t
rec
t
PHL
MR
CP
Qn, Qn
V
M
t
w
(L)
SF00507
Waveform 2. Master reset pulse width, master reset to output
delay and master reset to clock recovery time
V
M
V
M
V
M
V
M
V
M
V
M
t
su
(L) t
h
(L)
t
su
(H) t
h
(H)
Dn, CE
CP
SF00508
Waveform 3. Data setup time and hold times
V
M
V
M
V
M
t
PHZ
t
PZH
OEn
V
OH
-0.3V
0V
Qn, Qn
SF00509
Waveform 4. 3-State output enable time to high level and
output disable time from high level
V
M
V
M
V
M
t
PLZ
t
PZL
V
OL
+0.3V
3.5V
OEn
Qn, Q
n
SF00510
Waveform 5. 3-State output enable time to low level and
output disable time from low level
