74vhc123a Fairchild Semiconductor, 74vhc123a Datasheet - Page 8

• Manufacturer Part Number: 74vhc123a
• Description: Dual Retriggerable Monostable Multivibrator
• Manufacturer: Fairchild Semiconductor

©1993 Fairchild Semiconductor Corporation
74VHC123A Rev. 1.2
AC Electrical Characteristics
Notes:
4. Refer to Timing Chart.
5. C
t
t
t
Symbol
PLH
PLH
PLH
∆t
I
I
Duty: %
t
consumption without load. Average operating current can be obtained by the equation:
CC
CC
WOUT
C
WOUT
C
PD
, t
, t
, t
PD
IN
1
(opr.) = C
: Active Supply Current
PHL
PHL
PHL
is defined as the value of the internal equivalent capacitance which is calculated from the operating current
Propagation Delay Time
(A, B–Q, Q)
Propagation Delay Time
(CLR Trigger—Q, Q)
Propagation Delay Time
(CLR—Q, Q)
Output Pulse Width
Output Pulse Width Error
Between Circuits
(In same Package)
Input Capacitance
Power Dissipation
Capacitance
PD
Parameter
• V
CC
• f
IN+
I
CC
1
• Duty / 100 + I
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
V
CC
(4)
(V)
C
C
C
C
C
C
C
C
C
C
C
C
C
R
C
R
C
R
V
(5)
CC
CC
L
L
L
L
L
L
L
L
L
L
L
L
L
x
L
x
L
x
= 2kΩ
= 10kΩ
= 1kΩ
= 15 pF
= 50 pF
= 15 pF
= 50 pF
= 15 pF
= 50 pF
= 15 pF
= 50 pF
= 15 pF
= 50 pF
= 15 pF
= 50 pF
= 50pF, C
= 50pF, C
= 50pF, C
/ 2 (per Circuit)
= Open
Conditions
8
x
x
x
= 28pF,
= 0.01µF,
= 0.1µF,
Min.
0.9
0.9
90
90
T
A
Typ. Max. Min. Max.
13.4
15.9
14.5
17.0
10.2
10.3
12.8
= 25°C
160
133
100
100
8.1
9.6
8.7
6.3
7.8
1.0
1.0
±1
73
4
20.6
24.1
12.0
14.0
22.4
25.9
12.9
14.9
15.8
19.3
11.4
240
200
110
110
9.4
1.1
1.1
10
T
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.9
0.9
90
90
to +85°C
A
= –40°C
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24.0
27.5
14.0
16.0
26.0
29.5
15.0
17.0
18.5
22.0
11.0
13.0
300
240
110
110
1.1
1.1
10
Units
ms
pF
pF
ns
ns
ns
ns
ns
ns
ns
µs
%