74HC5555D

Programmable delay timer with oscillator

The 74HC/HCT5555 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/HCT5555 are precision programmable delay timers which consist of:

• 24-stage binary counter

• integrated oscillator (using external timing components)

• retriggerable/non-retriggerable

monostable

• automatic power-ON reset

• output control logic

• oscillator control logic

• overriding asynchronous master

reset (MR).