74HCT5555 Overview
The 74HC/HCT5555 are high-speed Si-gate CMOS devices and are pin patible with low power Schottky TTL (LSTTL). They are specified in pliance with JEDEC standard no. The 74HC/HCT5555 are precision programmable delay timers which consist of:.
74HCT5555 Key Features
- Positive and negative edge triggered
- Retriggerable or non-retriggerable
- Programmable delay minimum: 100 ns maximum: depends on input frequency and division ratio
- Divide-by range of 2 to 224
- Direct reset terminates output pulse
- Very low power consumption in triggered start mode
- 3 oscillator operating modes
- RC oscillator
- Crystal oscillator
- External oscillator