Datasheet

September 1993 18
Philips Semiconductors Product specification
Programmable delay timer with oscillator 74HC/HCT5555
Fig.8 Waveforms showing the clock (RS) to outputs (Q and Q) propagation delays, the clock pulse width and
the maximum clock frequency.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
handbook, full pagewidth
t
PHL
V
M
(1)
t
W
t
PLH
Q OUTPUT
RS INPUT
MGA651
V
CC
1
2
V
M
(1)
Q OUTPUT
1/f max
Fig.9 Waveforms showing the clock (RS) to outputs (Q and Q) propagation delays, the clock pulse width and
the maximum clock frequency (Output waveforms are not synchronized with respect to the RS waveform).
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
handbook, full pagewidth
t
PHL
V
M
(1)
1/f max
t
PLH
Q OUTPUT
RS INPUT
MGA654
V
M
(1)
Q OUTPUT
V
M
(1)