Philips 74LV423
The 74LV423 is a low-voltage Si-gate CMOS device and is pin and function compatible with the 74HC/HCT423. The 74LV423 is a dual retriggerable monostable multivibrator with output pulse width control by three methods. The basic pulse time is programmed by selection of an external resistor (REXT) and capacitor (CEXT).| Part No. | 74LV423 |
|---|---|
| Datasheet | 74LV423 Download |
| Manufacturer |  Philips |
| Description | Dual retriggerable monostable multivibrator |
| Buy | Stock & Price |
FEATURES
● Optimized for Low Voltage applications: 1.0 to 5.5V● Accepts TTL input levels between VCC = 2.7V and VCC = 3.6V
● Typical VOLP (output ground bounce) t 0.8V @ VCC = 3.3V,
● Typical VOHV (output VOH undershoot) u 2V @ VCC = 3.3V,
● DC triggered from active HIGH or active LOW inputs
● Retriggerable for very long pulses up to 100% duty factor
● Direct reset terminates output pulses
● Schmitt-trigger action on all inputs except for the reset input
● Output capability: standard (except for nREXT/CEXT)
● ICC category: MSI Tamb = 25°C Tamb = 25°C
DESCRIPTION
They are normally connected as shown in Figure 1. Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long as desired. Alternatively, an output delay can be terminated at any time by a LOW-going edge on input nRD, which also inhibits the triggering.
