KK33197A
Representative Block Diagram
This device contains 390 active transistors.
ELECTRICAL CHARACTERISTICS
(–45°C 3 T
A
≤
+125°C, 8.0 V
≤
VCC
≤
16 V, unless otherwise noted. Typical
values reflect approximate mean at TA = 25°C with VCC = 14 V at the time of initial device characterization.)
NOTES:
1. The oscillator frequency is defined by the current flowing through the external resistor R2. The voltage at the INT pin is
(VCC/2 – Vbe) and hence the current flowing through R3 is different if R3 is connected to Vbb or to Gnd because of the
voltage drop across resistor R1. This voltage drop causes the oscillator coefficient for t
b2
to be different for the two cases of
INT terminated to Gnd or to Vbb. Because of this, the oscillator coefficient is specified with a specific value of R1
whenever INT is connected to Vbb. If R1 is changed, the coefficient will change. Also, any extra current through the
resistor R1 other than the current used by the device will cause timing deviations in t
b2
timings (as in the case where two
devices are sharing a common R1 resistor).
2. The oscillator stability with temperature is dependent on the temperature coefficients of the external components. If the
capacitance value of the external capacitor varies more than 5% over the parametric temperature range, the figures quoted
for oscillator variation are not valid.
3. The t
b1
duration is given by coefficient 4 x R2 x C2 (t
b1
duration = t
b1
x 4 x R2 x C2).
4. The t
b2
duration is given by coefficient x R3 x C2 (t
b2
duration = t
b2
x R3 x C2).
2
KODENSHI [ KODENSHI KOREA CORP. ]
