SiT1421B Datasheet - SiTime

SiT1421B Active Resonator Drop-In Replacement

Pin Symbol 1 XIN/VDD VDD Power 2 GND Power 3 XOUT Output 4 GND Power Functionality Connect to µC GPIO pin XTAL1 set High via firmware[3] Electrical ground CLK output; connect to µC XTAL2 pin (refer to Figure 18 in Application Note section) Electrical GND Top View GND 4 3 XOUT/CLK .

SiT1421B Features

* No load capacitors required

* No motional series resistance (ESR) compensation

* No negative resistance testing

* Guaranteed oscillator startup under all conditions

* One active resonator can drive up to two clock inputs

* All-inclusive frequency stability as low as ±20 ppm

SiT1421B-SiTime.pdf