Datasheet

September 1993 11
Philips Semiconductors Product specification
Programmable delay timer with oscillator 74HC/HCT5555
Notes
1. One stage selected.
2. It is possible to retrigger directly after the trigger pulse, however the pulse will only be extended, if the time period
exceeds the clock input cycle time divided by 2.
3. One stage selected. The termination of the output pulse remains synchronized with respect to the falling edge of the
RS clock input.
4. One stage selected. The termination of the output pulse is no longer synchronized with respect to the falling edge of
the RS clock input.
f
max
maximum
clock pulse
frequency
2
10
12
5.9
18
21
−
−
−
1.8
8
10
−
−
−
1.3
6.6
8
−
−
−
MHz
MHz
MHz
2.0
4.5
6.0
Fig.8; note 3
f
max
maximum
clock pulse
frequency
6
30
35
24.8
75
89
−
−
−
4.8
24
28
−
−
−
4
20
24
−
−
−
MHz
MHz
MHz
2.0
4.5
6.0
Fig.9; note 4
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITION
+25 −40 to +85 −40 to +125
V
CC
(V)
WAVEFORMS
MIN TYP MAX MIN MAX MIN MAX