Datasheet

September 1993 16
Philips Semiconductors Product specification
Programmable delay timer with oscillator 74HC/HCT5555
AC WAVEFORMS
Fig.6 Waveforms showing the triggering of the delay timer by input A or B, the minimum pulse widths of the
trigger inputs A and B, the output pulse width and output transition times.
(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
W
Q OUTPUT
MGA653
Q OUTPUT
90%
10%
A INPUT
B INPUT
V
M
(1)
V
M
(1)
t
TLH
t
THL
90%
10%
t
W
GND
V
M
(1)
90%
10%
t
W
90%
10%
t
PHL
t
PLH
V
M
(1)
t
TLH
t
THL