HEF4047BF Philips Semiconductors, HEF4047BF Datasheet - Page 8

• Manufacturer Part Number: HEF4047BF
• Description: Monostable/astable multivibrator
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1. Astable mode design information
a. Unit-to-unit transfer-voltage variations
The following analysis presents worst-case variations from unit-to-unit as a function of transfer-voltage (V
running (astable) operation.
Values for t
thus if t
January 1995
V
V
t
t
t
DD
DD
1
2
Monostable/astable multivibrator
A
=
=
=
= 5 or 10 V
= 15 V
–
–
2 t
A
R
R
= 4,40 R
t
t
C
C
1
A
t
t
+
are:
In
In
t
2
--------------------------- -
V
------------------------------ -
2V
V
DD
=
DD
t
C
DD
V
–
t
+
TR
–
2R
is used, the maximum variation will be (+ 7,0%; 0,0%) at 10 V.
–
V
typ. : V
min. : V
max.: V
min. : V
max.: V
V
V
TR
t
TR
C
TR
t
In
------------------------------------------------------------------------ - , where t
V
TR
TR
TR
TR
TR
DD
= 0,5 V
= 0,3 V
= 0,7 V
= 4 V;
= 11 V;
V
+
TR
V
TR
V
DD
DD
DD
Fig.4 Astable mode waveforms.
DD
;
;
;
2V
–
DD
t
t
t
t
t
V
A
A
A
A
A
TR
= 4,40 R
= 4,71 R
= 4,71 R
= 4,84 R
= 4,84 R
–
V
TR
8
t
t
t
t
t
C
C
C
C
C
t
t
t
t
t
A
=
Astable mode pulse width.
Product specification
HEF4047B
TR
) shift for free
MSI