hef4047b NXP Semiconductors, hef4047b Datasheet - Page 11

• Manufacturer Part Number: hef4047b
• Description: Monostable/astable Multivibrator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2. Monostable mode design information
The following analysis presents worst case variations from unit-to-unit as a function of transfer-voltage (V
one-shot (monostalbe) operation.
Values for t
Note
1. In the astable mode, the first positive half cycle has a duration of t
thus if t
January 1995
V
V
t
t
t
DD
DD
Monostable/astable multivibrator
1
M
M
‘
=
=
= 5 to10 V
= 15 V
=
M
–
–
R
R
t
= 2,48 R
1
t
t
'
M
C
C
+
t
t
are:
t
In
In
2
--------------
2V
----------------------------------------------------------- - , where t
V
2V
t
C
V
TR
DD
t
TR
DD
is used, the maximum variation will be (+ 12%; 0,0%) at 10 V.
typ. : V
min. : V
max.: V
min. : V
max.: V
–
V
V
DD
TR
–
TR
TR
TR
TR
TR
V
2V
TR
= 0,5 V
= 0,3 V
= 0,7 V
= 4 V;
= 11 V;
DD
DD
DD
DD
; t
; t
; t
Fig.7 Monostable waveforms.
t
t
M
M
M
M
M
M
= 2,48 R
= 2,78 R
= 2,52 R
= 2,88 R
= 2,56 R
=
Monostable mode pulse width.
t
t
t
t
t
C
C
C
C
C
11
t
t
t
t
t
M
; succeeding durations are
Product specification
1
2
HEF4047B
t
A
.
TR
) shift for
MSI