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Número de pieza
componentes Descripción
HEF4538BU Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
HEF4538BU
Dual precision monostable multivibrator
Philips Electronics
HEF4538BU Datasheet PDF : 8 Pages
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Philips Semiconductors
Dual precision monostable multivibrator
Product specification
HEF4538B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°
C; C
L
= 50 pF; input transition times
≤
20 ns
V
DD
V
SYMBOL MIN. TYP. MAX.
Change in output O
pulse width over
temperature (T
amb
)
Change in output O
pulse width over
V
DD
range 5 to 15 V
Pulse width variation
between circuits
in same package
External timing
resistor
5
10
∆
t
WO
15
∆
t
WO
5
10
∆
t
WO
15
R
t
±
0,2
%
±
0,2
%
±
0,2
%
±
1,5
%
±
1
%
±
1
%
±
1
%
5
−
(1)
k
Ω
R
t
= 100 k
Ω
C
t
= 2 nF to 10
µ
F
External timing
capacitor
C
t
2000
−
no limits pF
Input capacitance
(pin 2 or 14)
C
IN
15
pF
Note
1. The maximum permissible resistance R
t
, which holds the specified accuracy of t
WO
, depends on the leakage current
of the capacitor C
t
and the leakage of the HEF4538B.
January 1995
6
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