74LV4060 Philips, 74LV4060 Datasheet - Page 12

• Manufacturer Part Number: 74LV4060
• Description: 14-stage binary ripple counter with oscillator
• Manufacturer: Philips

Philips Semiconductors
R2 is the power limiting resistor. For starting and maintaining
oscillation, a minimum transconductance is necessary, so R2 should
not be too large. A practical value for R2 is 2.2 kW.
Waveforms showing the clock (RS) to output (Q
delays, the clock pulse width, the output transition times and the
maximum clock frequency.
1998 Jun 23
14-stage binary ripple counter with oscillator
V
CP INPUT
GND
V
Q
V
I
OH
OL
n
C3
Figure 5. External components connection for
OUTPUT
22 to
37 pF
11
V
M
a typical crystal oscillator
t
RS
PHL
100 kW to 1 MW
MR (from logic)
1/
V
Figure 6.
f
M
R
max
bias
tW
C2
t
PLH
3
) propagation
R
10
R2
2.2 kW
TC
100 pF
SV00322
SV00326
12
1. V
2. V
Waveforms showing the master reset (MR) pulse width, the master
reset to output (Q
clock (RS) removal time.
Waveforms showing the output Q
delays.
NOTES:
Qn OUTPUT
V
the output load.
MR INPUT
RS INPUT
V
Q
V
V
Q
V
M
M
OL
OH
OL
OH
OL
n
n+1
OUTPUT
= 1.5 V at V
= 0.5
and V
GND
GND
GND
OUTPUT
V
CC
V
V
I
I
.
V
OH
CC
are the typical output voltage drop that occur with
n)
at V
CC
V
propagation delays and the master reset to
M
V
M
> 2.7 V and < 3.6 V
t
CC
PLH
t
PHL
< 2.7 V and > 4.5 V.
t
W
Figure 7.
Figure 8.
V
M
n
to output
V
M
t
rem
n + 1
Product specification
74LV4060
V
t
propagation
PHL
M
SV00329
SV00327