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74HC221 Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. 74HC221
Description  Dual non-retriggerable monostable multivibrator with reset
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74HC221 Datasheet(HTML) 6 Page - NXP Semiconductors

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December 1990
6
Philips Semiconductors
Product specification
Dual non-retriggerable monostable
multivibrator with reset
74HC/HCT221
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard (except for nREXT/CEXT)
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr =tf = 6 ns; CL = 50 pF
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
WAVEFORMS
+25
−40 to +85 −40 to +125
min
typ
max. min
max.
min.
max.
tPLH
propagation delay (trigger)
nA, nB to nQ
72
26
21
220
44
37
275
55
47
330
66
56
ns
2.0
4.5
6.0
CEXT = 0 pF;
REXT =5 kΩ;
Fig.10
tPLH
propagation delay (trigger)
nRD to nQ
80
29
23
245
49
42
305
61
52
370
74
63
ns
2.0
4.5
6.0
CEXT = 0 pF;
REXT =5 kΩ;
Fig.10
tPHL
propagation delay (trigger)
nA, nB to nQ
58
21
17
180
36
31
225
45
38
270
54
46
ns
2.0
4.5
6.0
CEXT = 0 pF;
REXT =5 kΩ;
Fig.10
tPHL
propagation delay (trigger)
nRD to nQ
63
23
18
195
39
33
245
49
42
295
59
50
ns
2.0
4.5
6,0
CEXT = 0 pF;
REXT =5 kΩ;
Fig.10
tPLH
propagation delay (reset)
nRD to nQ
66
24
19
200
40
34
250
50
43
300
60
51
ns
2.0
4.5
6.0
CEXT = 0 pF;
REXT =5 kΩ;
Fig.11
tPLH
propagation delay (reset)
nRD to nQ
58
21
17
180
36
31
225
45
38
270
54
46
ns
2.0
4.5
6.0
CEXT = 0 pF;
REXT =5 kΩ;
Fig.11
tTHL/
tTLH
output transition time
19
7
6
75
15
13
95
19
16
110
22
19
ns
2.0
4.5
6.0
Fig.10
tW
trigger pulse width
nA = LOW
75
15
13
25
9
7
95
19
16
110
22
19
ns
2.0
4.5
6.0
Fig.7
tW
trigger pulse width
nB = HIGH
90
18
15
30
11
9
115
23
20
135
27
23
ns
2.0
4.5
6.0
Fig.7
tW
trigger pulse width
nRD = LOW
75
15
13
25
9
7
95
19
16
110
22
19
ns
2.0
4.5
6.0
Fig.8
tW
output pulse width
nQ = LOW
nQ = HIGH
630
700 770
602
798
595
805
µs
5.0
CEXT = 100 nF;
REXT = 10 kΩ;
Fig.10


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