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74VHC221AM 数据表(PDF) 7 Page - Fairchild Semiconductor

部件名 74VHC221AM
功能描述  Dual Non-Retriggerable Monostable Multivibrator
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

74VHC221AM 数据表(HTML) 7 Page - Fairchild Semiconductor

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©1994 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHC221A Rev. 1.2
7
AC Electrical Characteristics(4)
Notes:
4. Refer to 74VHC221A Timing Chart.
5. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current
consumption without load. Average operating current can be obtained by the equation:
ICC (opr.) = CPD • VCC • fIN + ICC
1 • Duty / 100 + I
CC / 2 (per Circuit)
ICC
1: Active Supply Current
Duty: %
AC Operating Requirement
Symbol
Parameter
VCC (V)
Conditions
TA = 25°C
TA = –40°C
to +85°C
Units
Min.
Typ.
Max.
Min.
Max.
tPLH, tPHL Propagation Delay Time
(A, B–Q, Q)
3.3 ± 0.3
CL = 15pF
13.4
20.6
1.0
24.0
ns
CL = 50pF
15.9
24.1
1.0
27.5
5.0 ± 0.5
CL = 15pF
8.1
12.0
1.0
14.0
ns
CL = 50pF
9.6
14.0
1.0
16.0
tPLH, tPHL Propagation Delay Time
(CLR Trigger—Q, Q)
3.3 ± 0.3
CL = 15pF
14.5
22.4
1.0
26.0
ns
CL = 50pF
17.0
25.9
1.0
29.5
5.0 ± 0.5
CL = 15pF
8.7
12.9
1.0
15.0
ns
CL = 50pF
10.2
14.9
1.0
17.0
tPLH, tPHL Propagation Delay Time
(CLR—Q, Q)
3.3 ± 0.3
CL = 15pF
10.3
15.8
1.0
18.5
ns
CL = 50pF
12.8
19.3
1.0
22.0
5.0 ± 0.5
CL = 15pF
6.3
9.4
1.0
11.0
ns
CL = 50pF
7.8
11.4
1.0
13.0
tWOUT
Output Pulse Width
2.0
CX = 28pF, CL = 50pF,
RX = 6kΩ
415
3.3 ± 0.3
345
ns
5.0 ± 0.5
312
3.3 ± 0.3
CL = 50pF, Cx = 28pF,
Rx
= 2kΩ
160
240
300
ns
5.0 ± 0.5
133
200
240
3.3 ± 0.3
CL = 50pF,
Cx
= 0.01µF,
Rx
= 10kΩ
90
100
110
90
110
µs
5.0 ± 0.5
90
100
110
90
110
3.3 ± 0.3
CL = 50pF, Cx = 0.1µF,
Rx
= 10kΩ
0.9
1.0
1.1
0.9
1.1
ms
5.0 ± 0.5
0.9
1.0
1.1
0.9
1.1
∆t
wOUT
Output Pulse Width Error
Between Circuits
(In same Package)
±1
%
CIN
Input Capacitance
VCC = Open
4
10
10
pF
CPD
Power Dissipation
Capacitance
(5)
73
pF
Symbol
Parameter
VCC (V)
TA = 25°C
TA = –40°C to +85°C
Units
Min.
Typ.
Max.
Min.
Max.
tW(L)
Minimum Trigger
3.3
5.0
5.0
ns
tW(H)
Pulse Width
5.0
5.0
5.0
tW(L)
Minimum Clear Pulse Width
3.3
5.0
5.0
ns
5.0
5.0
5.0


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