HEF4538B 데이터 시트보기 (PDF) - Philips Electronics
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HEF4538B Datasheet PDF : 8 Pages
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Philips Semiconductors
Dual precision monostable multivibrator
Product specification
HEF4538B
MSI
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL MIN. TYP. MAX.
Change in output O
pulse width over
temperature (Tamb)
Change in output O
pulse width over
VDD range 5 to 15 V
Pulse width variation
between circuits
in same package
External timing
resistor
5
10
∆tWO
15
∆tWO
5
10
∆tWO
15
Rt
± 0,2
%
± 0,2
%
± 0,2
%
± 1,5
%
±1
%
±1
%
±1
%
5
−
(1)
kΩ
Rt = 100 kΩ
Ct = 2 nF to 10 µF
External timing
capacitor
Ct
2000
− no limits pF
Input capacitance
(pin 2 or 14)
CIN
15
pF
Note
1. The maximum permissible resistance Rt , which holds the specified accuracy of tWO, depends on the leakage current
of the capacitor Ct and the leakage of the HEF4538B.
January 1995
6
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