74VHC123A(2007) データシートの表示（PDF） - Fairchild Semiconductor
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74VHC123A Datasheet PDF : 14 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
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
Conditions
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 50pF, Cx = 28pF,
Rx = 2kΩ
CL = 50pF, Cx = 0.01µF,
Rx = 10kΩ
CL = 50pF, Cx = 0.1µF,
Rx = 1kΩ
VCC = Open
(5)
TA = 25°C
TA = –40°C
to +85°C
Min. Typ. Max. Min. Max. Units
13.4 20.6 1.0 24.0 ns
15.9 24.1 1.0 27.5
8.1 12.0 1.0 14.0 ns
9.6 14.0 1.0 16.0
14.5 22.4 1.0 26.0 ns
17.0 25.9 1.0 29.5
8.7 12.9 1.0 15.0 ns
10.2 14.9 1.0 17.0
10.3 15.8 1.0 18.5 ns
12.8 19.3 1.0 22.0
6.3 9.4 1.0 11.0 ns
7.8 11.4 1.0 13.0
160 240
300 ns
133 200
240
90 100 110 90 110 µs
90 100 110 90 110
0.9 1.0 1.1 0.9 1.1 ms
0.9 1.0 1.1 0.9 1.1
±1
%
4
10
73
10 pF
pF
Notes:
4. Refer to 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: %
©1993 Fairchild Semiconductor Corporation
74VHC123A Rev. 1.2
8
www.fairchildsemi.com
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