74hct5555 NXP Semiconductors, 74hct5555 Datasheet - Page 10

• Manufacturer Part Number: 74hct5555
• Description: Programmable Delay Timer With Oscillator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
September 1993
t
t
t
t
t
t
t
t
t
R
C
t
SYMBOL
PLH
PLH
PLH
THL
W
W
W
W
rt
rem
Programmable delay timer with oscillator
EXT
EXT
/t
/t
/t
/t
PHL
PHL
PHL
TLH
r
propagation
delay A, B to
Q, Q
propagation
delay MR to Q,
Q
propagation
delay RS to Q,
Q
output
transition time
trigger pulse
width
A = HIGH
B = LOW
master reset
pulse width
HIGH
clock pulse
width RS;
HIGH or LOW
minimum
output pulse
width
Q = HIGH,
Q = LOW
retrigger time
A, B
external timing
resistor
external timing
capacitor
removal time
MR to A, B
= t
PARAMETER
f
= 6 ns; C
L
= 50 pF.
70
14
12
70
14
12
80
16
14
5
1
50
50
120
24
20
MIN
77
28
22
61
22
18
83
30
24
19
7
6
17
6
5
19
7
6
25
9
7
275
100
80
0
0
0
39
14
11
TYP
25
240
48
41
185
37
31
250
50
43
75
15
13
1000
1000
MAX
T
amb
90
18
15
90
18
15
100
20
17
150
30
26
MIN
40 to 85
no limits
( C)
10
300
60
51
230
46
39
315
63
54
95
19
16
MAX
105
21
18
105
21
18
120
24
20
180
36
31
MIN
40 to 125
360
72
61
280
56
48
375
75
64
110
22
19
MAX
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
k
k
pF
pF
ns
ns
ns
UNIT
74HC/HCT5555
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
5.0
2.0
5.0
2.0
4.5
6.0
V
(V)
TEST CONDITION
CC
Product specification
Fig.6
Fig.7
Fig.8; note 1
Fig.6
Fig.6
Fig.7
Fig.8
Fig.6; note 1
Fig.10; note 2
Fig.13
Fig.13
Fig.7
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