January 1995 5
Philips Semiconductors Product specification
Programmable timer
HEF4541B
MSI
Fig.5 RC oscillator frequency as a function of R
t
and C
t
at V
DD
= 5 to 15 V; T
amb
=25°C.
C
t
curve at R
t
= 56 kΩ;R
S
= 120 kΩ.
−−− R
t
curve at C
t
= 1 nF; R
S
=2 R
t
.
