74HC4060 Datasheet, PDF (12/12 Pages) NXP Semiconductors – 14-stage binary ripple counter with oscillator

Philips Semiconductors
14-stage binary ripple counter with oscillator
Product specification
74HC/HCT4060
TYPICAL CRYSTAL OSCILLATOR
In Fig.11, 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 kΩ.
AC WAVEFORMS
Fig.11 External components connection for a crystal oscillator.
(1) HC : V_M = 50%; V_I = GND to V_CC.
HCT: V_M = 1.3 V; V_I = GND to 3 V.
Fig.12 Waveforms showing the clock (RS) to
output (Q₃) propagation delays, the clock
pulse width, the output transition times and
the maximum clock frequency.
(1) HC : V_M = 50%; V_I = GND to V_CC.
HCT: V_M = 1.3 V; V_I = GND to 3 V.
Fig.13 Waveforms showing the master reset (MR)
pulse width, the master reset to output (Q_n)
propagation delays and the master reset to
clock (RS) removal time.
(1) HC : V_M = 50%; V_I = GND to V_CC.
HCT: V_M = 1.3 V; V_I = GND to 3 V.
Fig.14 Waveforms showing the output (Q_n) to Q_n+1 propagation delays.
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.
December 1990
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