The SiT1534 from SiTime is a XO with Frequency 1 to 32768.0 Hz, Supply Voltage 1.2 to 3.63 V, Frequency Stability ±75 to ±250 ppm, Current 0.9 to 1.4 µA, Duty Cycle 48 to 52 %. Tags: Surface Mount, Low Power. More details for SiT1534 can be seen below.