參數(shù)資料
型號(hào): 933372910652
廠商: NXP SEMICONDUCTORS
元件分類: 諧振器
英文描述: 4000/14000/40000 SERIES, MONOSTABLE MULTIVIBRATOR, PDSO14
封裝: PLASTIC, SOT-108-1, SO-14
文件頁數(shù): 3/15頁
文件大小: 274K
代理商: 933372910652
January 1995
11
Philips Semiconductors
Product specication
Monostable/astable multivibrator
HEF4047B
MSI
2. Monostable mode design information
The following analysis presents worst case variations from unit-to-unit as a function of transfer-voltage (VTR) shift for
one-shot (monostalbe) operation.
Values for tM are:
Note
1. In the astable mode, the first positive half cycle has a duration of tM; succeeding durations are 12 tA.
thus if tM = 2,48 RtCt is used, the maximum variation will be (+ 12%; 0,0%) at 10 V.
typ. : VTR = 0,5 VDD;tM = 2,48 RtCt
VDD = 5 to10 V
min. : VTR = 0,3 VDD;tM = 2,78 RtCt
max.: VTR = 0,7 VDD;tM = 2,52 RtCt
VDD = 15 V
min. : VTR =4 V;
tM = 2,88 RtCt
max.: VTR = 11 V;
tM = 2,56 RtCt
Fig.7 Monostable waveforms.
t
1 ‘Rt Ct In
V
TR
2V
DD
--------------
=
t
M
t
1'
t
2
+
()
=
t
M
R
t Ct In
V
TR
() V
DD
V
TR
()
2V
DD
V
TR
() 2V
DD
()
------------------------------------------------------------
, where t
M
Monostable mode pulse width.
=
=
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