74HCT4060D NXP Semiconductors, 74HCT4060D Datasheet - Page 15

• Manufacturer Part Number: 74HCT4060D
• Description: IC, LOGIC, 74HCT, COUNTER, SO16
• Manufacturer: NXP Semiconductors

Specifications of 74HCT4060D

• Counter Type: Binary
• Clock Frequency: 88MHz
• Count Maximum: 14
• Supply Voltage Range: 4.5V To 5.5V
• Logic Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
13. RC oscillator
74HC_HCT4060_3
Product data sheet
13.1 Timing component limitations
13.2 Typical crystal oscillator circuit
The oscillator frequency is mainly determined by R
R2C2 << R
across the input protection diodes on the frequency. The stray capacitance C2 should be
kept as small as possible. In consideration of accuracy, C
stray capacitance. R
typically is 280
The recommended values for these components to maintain agreement with the typical
oscillation formula are:
C
In order to avoid start-up problems, R
In
minimum transconductance is necessary, so R2 should not be too large. A practical value
for R2 is 2.2 k .
Fig 12. Example of a RC oscillator
t
Figure
> 50 pF, up to any practical value and 10 k < R
Typical formula for oscillator frequency:
13, R2 is the power limiting resistor. For starting and maintaining oscillation a
t
C
t
. The function of R2 is to minimize the influence of the forward voltage
at V
t
must be larger than the ON resistance in series with it, which
CC
Rev. 03 — 14 July 2008
= 2.0 V, 130
C2
R2
11 RS
t
MR (from logic)
at V
1 k .
74HC4060; 74HCT4060
14-stage binary ripple counter with oscillator
f
osc
CC
=
= 4.5 V and 100
------------------------------ -
2.5
RTC
10
R t
t
t
C
< 1 M .
t
74HCT4060
, provided R2
1
R
74HC4060
t
001aai121
t
C
must be larger than the inherent
CTC
9
C t
t
at V
2R
CC
© NXP B.V. 2008. All rights reserved.
t
= 6.0 V.
and
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