74hct423pw NXP Semiconductors, 74hct423pw Datasheet - Page 10

• Manufacturer Part Number: 74hct423pw
• Description: Dual Retriggerable Monostable Multivibrator With Reset
• Manufacturer: NXP Semiconductors

Philips Semiconductors
APPLICATION INFORMATION
Power-up considerations
When the monostable is powered-up it may produce an output pulse, with a pulse width defined by the values of R
C
Power-down considerations
A large capacitor (C
capacitor. When a system containing this device is powered-down or a rapid decrease of V
monostable may substain damage, due to the capacitor discharging through the input protection diodes. To avoid this
possibility, use a damping diode (D
surges and connect as shown in Fig.12.
1998 Jul 08
X
Dual retriggerable monostable
multivibrator with reset
, this output pulse can be eliminated using the circuit shown in Fig.11.
X
) may cause problems when powering-down the monostable due to the energy stored in this
Fig.11 Power-up output pulse elimination circuit.
X
) preferably a germanium or Schottky-type diode able to withstand large current
Fig.12 Power-down protection circuit.
10
CC
to zero occurs, the
74HC/HCT423
Product specification
X
and