Datasheet

January 1995 9
Philips Semiconductors Product specification
Monostable/astable multivibrator
HEF4047B
MSI
b. Variations due to changes in V
DD
In addition to variations from unit-to-unit, the astable period may vary as a function of frequency with respect to V
DD
.
Typical variations are presented graphically in Figs 5 and 6 with 10 V as a reference.
CURVE f
O
kHz
C
t
pF
R
t
kΩ
A 10 100 220
B 5 100 470
C 1 1000 220
Fig.5 Typical O and O period accuracy as a function of supply voltage; astable mode; T
amb
=25°C.