MC54HC4060A Motorola, MC54HC4060A Datasheet - Page 7

• Manufacturer Part Number: MC54HC4060A
• Description: 14-Stage Binary Ripple Counter With Oscillator
• Manufacturer: Motorola

High–Speed CMOS Logic Data
DL129 — Rev 6
TABLE 1. CRYSTAL OSCILLATOR AMPLIFIER SPECIFICATIONS
Input Resistance, R in
Output Impedance, Z out (4.5V Supply)
Input Capacitance, C in
Output Capacitance, C out
Series Capacitance, C a
Open Loop Voltage Gain with Output at Full Swing,
–jX Cs
NOTE: C = C1 + C in and R = R1 + R out . C o is considered as part of
jX Ls
R S
the load. C a and R f typically have minimal effect below 2MHz.
Figure 9. Series Equivalent Crystal Load
Z load
1
–jX Co
Type
2
–jX C2
–jX C
Value are supplied by crystal manufacturer (parallel resonant crystal).
PIERCE CRYSTAL OSCILLATOR DESIGN
Figure 8. Equivalent Crystal Networks
R
1
3Vdc Supply
4Vdc Supply
5Vdc Supply
6Vdc Supply
R load
X load
R S
3–7
C O
L S
60M Minimum
200 (See Text)
5pF Typical
7pF Typical
5pF Typical
5.0 Expected Minimum
4.0 Expected Minimum
3.3 Expected Minimum
3.1 Expected Minimum
Figure 10. Parasitic Capacitances of the Amplifier
C S
(T A = 25 C; Input = Pin 11, Output = Pin 10)
2
Positive Reactance (Pierce)
Values are listed in Table 1.
C in
1
Re
C a
MC54/74HC4060A
Xe
C out
2
MOTOROLA