74AHCT123A

INTEGRATED CIRCUITS DATA SHEET 74AHC123A; 74AHCT123A Dual retriggerable monostable multivibrator with reset Product specification File under Integrated Circuits, IC06 2000 Mar 15 Philips Semiconductors Product specification Dual retriggerable monostable multivibrator with reset FEATURES ESD protection: HBM EIA/JESD22-A114-A exceeds 2000 V MM EIA/JESD22-A115-A exceeds 200 V CDM EIA/JESD22-C101 exceeds 1000 V All inputs have Schmitt-trigger actions Inputs accept voltages higher than VCC For AHC only: operates with CMOS input levels For AHCT only: operates with TTL input levels Specified from −40 to +85 °C and −40 to +125 °C DC triggered from active HIGH or active LOW inputs Retriggerable for very long pulses up to 100% duty factor Direct reset terminates output pulse Output capability: standard (except for nREXT/CEXT). DESCRIPTION The 74AHC/AHCT123A 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 74AHC/AHCT123A 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. 74AHC123A; 74AHCT123A Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (nA) or the active HIGH-g...