Silicon oscillator for programmable timing
The LTC6992CS6-4#TRMPBF is a silicon oscillator from the TimerBlox family, meaning it generates a square-wave clock without a crystal or ceramic resonator — just a single resistor sets the frequency from 3.81 Hz up to 1 MHz. It draws 365 µA typical supply current across the 2.25 V to 5.5 V range, so it can run directly off a 3.3 V or 5 V rail without a separate regulator.
Frequency programming and supply tolerance
The output frequency is set by one external resistor (Rset) with no software or I²C writes — the datasheet formula ties Rset to frequency with ±1.5% typical accuracy. Supply range spans 2.25 V to 5.5 V, which covers both 3.3 V and 5 V logic families without a level translator.