74HC5555 Datasheet, PDF (14/23 Pages) NXP Semiconductors – Programmable delay timer with oscillator

Philips Semiconductors
Programmable delay timer with oscillator
Product specification
74HC/HCT5555
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF.
T_amb (°C)
TEST CONDITION
SYMBOL PARAMETER
+25
−40 to +85 −40 to +125 UNIT
MIN TYP MAX MIN MAX MIN MAX
V_CC
(V)
WAVEFORMS
t_PLH/t_PHL propagation
−
delay A, B to
Q, Q
t_PHL/t_PLH propagation
−
delay MR to Q,
Q
t_PHL/t_PLH propagation
−
delay RS to Q,
Q
t_THL/t_TLH output
−
transition time
t_W
trigger pulse
21
width
A = HIGH
B = LOW
t_W
master reset 14
pulse width
HIGH
t_W
clock pulse
16
width RS;
HIGH or LOW
t_W
minimum
−
output pulse
width
Q = HIGH,
Q = LOW
t_rt
retrigger time −
A, B
R_EXT
external timing 1
resistor
C_EXT
external timing 50
capacitor
t_rem
removal time 24
MR to A, B
f_max
maximum
10
clock pulse
frequency
f_max
maximum
30
clock pulse
frequency
28 48 −
60 −
72
24 41 −
51 −
62
32 54 −
68 −
81
7
15 −
19 −
22
12 −
26 −
32 −
5
−
18 −
21 −
9
−
20 −
24 −
100 −
−
−
−
−
0
−
−
−
−
−
−
1000 −
−
−
−
no limits
14 −
30 −
36 −
18 −
8
−
6.6 −
75 −
24 −
20 −
ns 4.5
ns 4.5
ns 4.5
ns 4.5
ns 4.5
ns 4.5
ns 4.5
ns 4.5
ns 4.5
kΩ 4.5
pF 4.5
ns 4.5
MHz 4.5
MHz 4.5
Fig.6
Fig.7
Fig.8; note 1
Fig.6
Fig.6
Fig.7
Fig.8
Fig.6
Fig.10; note 2
Fig.13
Fig.13
Fig.7
Fig.8; note 3
Fig.9; note 4
September 1993
14