Philips HCT123 Manuals

The 74HC/HCT123 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT123 are dual retriggerable monostable multivibrators with output pulse width control by three methods. The basic pulse time is programmed by selection of an external resistor (REXT) and capacitor (CEXT). The external resistor and capacitor are normally connected as shown in Fig.6. 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 (A).

The 74HC/HCT123 is a dual retriggerable monostable multivibrator with reset. It is a high-voltage, high-output-drive device with Schmitt trigger action on all inputs except the reset input.

The 74HC/HCT123 are dual retriggerable monostable multivibrators with output pulse width control by three methods