74HC4518 Ver la hoja de datos (PDF) - Philips Electronics
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74HC4518 Datasheet PDF : 7 Pages
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Philips Semiconductors
Dual synchronous BCD counter
AC WAVEFORMS
Product specification
74HC/HCT4518
(1) HC : VM = 50%; VI = GND to VCC.
HCT: VM = 1.3 V; VI = GND to 3 V.
Fig.7 Waveforms showing hold and set-up times for nCP0 to nCP1 and nCP1 to nCP0.
Conditions:
nCP1 = HIGH while nCP0 is triggered on a
LOW-to-HIGH transition and nCP0 = LOW,
while nCP1 is triggered on a HIGH-to-LOW transition.
(1) HC : VM = 50%; VI = GND to VCC.
HCT: VM = 1.3 V; VI = GND to 3 V.
Fig.8 Waveforms showing the minimum pulse widths for nCP0, nCP1 and nMR inputs; the removal time for nMR
and the propagation delay for nMR to nQn outputs and the maximum clock pulse frequency.
Conditions:
nCP1 = HIGH while nCP0 is triggered on a
LOW-to-HIGH transition and nCP0 = LOW,
while nCP1 is triggered on a HIGH-to-LOW transition.
(1) HC : VM = 50%; VI = GND to VCC.
HCT: VM = 1.3 V; VI = GND to 3 V.
Fig.9 Waveforms showing the propagation delays for nCP0, nCP1 to nQn outputs and the output transition times.
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.
December 1990
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