It provides clock pulses of 3.579 Mhz frequency. Because these are very common and inexpensive they are used in many other applications, for example DTMF generators. It is a common clock for HT9170B DTMF decoder. It uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency.This frequency is commonly used to keep track of time, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.
Features of 3.579MHz Crystal Oscillators.
- Steel Case.
 - Stable frequency output over a wide operating temperature.
 - Oxide free leads for maximum efficiency
 - Frequency:3.579Mhz.
 
Applications of 3.579MHz Crystal Oscillators.
- Timing in Microcontrollers.
 - As clock source in multiple projects.
 - Multiple DIY projects requiring precise frequency clock.
 - DTMF modules.
 




