74hc6323a NXP Semiconductors, 74hc6323a Datasheet - Page 14

• Manufacturer Part Number: 74hc6323a
• Description: Programmable Ripple Counter With Oscillator; 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
September 1993
handbook, halfpage
Programmable ripple counter with
oscillator; 3-state
Above 5 MHz replace R2 by a capacitor of
half the value of C2.
C
equals for this application C1 . C2/C1 + C2.
Fig.13 Typical setup for a crystal oscillator
L
at which a crystal is specified (or adjusted)
operating in the fundamental mode
(1 MHz to 25 MHz).
C1
7
22 to
37 pF
X1
MR (from logic)
100 k
R bias
M
to 1
MBA328 - 1
C2
X2
6
R2
2.2
k
100 pF
14
handbook, halfpage
Applicable for third overtone crystals (lower
damping resistance at the third harmonic
frequency) at typical 50 MHz. For lower
frequencies extra load capacitors must be
supplied, or increase bias resistor.
Fig.14 Typical set-up for a crystal oscillator
operating in the third overtone mode without
the use of an inductor.
C1
7
1 to 10 pF
(optional)
X1
MR (from logic)
R bias
3 k
74HC/HCT6323A
MBA329 - 1
Product specification
X2
6