74VHC221A(2007) 데이터 시트보기 (PDF) - Fairchild Semiconductor
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74VHC221A Datasheet PDF : 12 Pages
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AC Electrical Characteristics(4)
Symbol
Parameter
tPLH, tPHL Propagation Delay Time
(A, B–Q, Q)
tPLH, tPHL Propagation Delay Time
(CLR Trigger—Q, Q)
tPLH, tPHL Propagation Delay Time
(CLR—Q, Q)
tWOUT Output Pulse Width
∆twOUT
CIN
CPD
Output Pulse Width Error
Between Circuits
(In same Package)
Input Capacitance
Power Dissipation
Capacitance
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
2.0
3.3 ± 0.3
Conditions
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CX = 28pF, CL = 50pF,
RX = 6kΩ
5.0 ± 0.5
3.3 ± 0.3 CL = 50pF, Cx = 28pF,
5.0 ± 0.5 Rx = 2kΩ
3.3 ± 0.3 CL = 50pF,
5.0 ± 0.5 Cx = 0.01µF,
Rx = 10kΩ
3.3 ± 0.3 CL = 50pF, Cx = 0.1µF,
5.0 ± 0.5 Rx = 10kΩ
VCC = Open
(5)
TA = 25°C
Min. Typ. Max.
13.4 20.6
15.9 24.1
8.1 12.0
9.6 14.0
14.5 22.4
17.0 25.9
8.7 12.9
10.2 14.9
10.3 15.8
12.8 19.3
6.3 9.4
7.8 11.4
415
345
312
160 240
133 200
90 100 110
90 100 110
0.9 1.0 1.1
0.9 1.0 1.1
±1
4
10
73
TA = –40°C
to +85°C
Min. Max. Units
1.0 24.0 ns
1.0 27.5
1.0 14.0 ns
1.0 16.0
1.0 26.0 ns
1.0 29.5
1.0 15.0 ns
1.0 17.0
1.0 18.5 ns
1.0 22.0
1.0 11.0 ns
1.0 13.0
ns
300 ns
240
90 110 µs
90 110
0.9 1.1 ms
0.9 1.1
%
10
pF
pF
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 + ICC1 • Duty / 100 + ICC / 2 (per Circuit)
ICC1: Active Supply Current
Duty: %
AC Operating Requirement
Symbol
tW(L)
tW(H)
tW(L)
Parameter
Minimum Trigger
Pulse Width
Minimum Clear Pulse Width
VCC (V)
3.3
5.0
3.3
5.0
TA = 25°C
Min. Typ. Max.
5.0
5.0
5.0
5.0
TA = –40°C to +85°C
Min.
Max.
5.0
5.0
5.0
5.0
Units
ns
ns
©1994 Fairchild Semiconductor Corporation
74VHC221A Rev. 1.2
7
www.fairchildsemi.com
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