The 35.4689 MHz frequency is a common multiple for USB full-speed (48 MHz derived via PLL) or for serial transceivers that need a precise reference for 10/100 Ethernet or CAN-FD bit timing. That puts it into engine-adjacent or cabin electronics — ECU, BCM, infotainment — where a crystal oscillator's mechanical fragility is a concern.
That is a 480× reduction. The pin controlling the standby mode is typically a dedicated enable pin on the DSC1001. Pull it low to disable the output; the MEMS resonator itself may keep running internally, but the output driver is off, so the downstream logic sees a high-impedance state.
That covers 1.8V MCU I/O banks, 2.5V FPGA banks, and 3.3V peripheral rails. The 4-SMD, no-lead package is 3.20 mm × 2.50 mm with a 0.90 mm seated height — small enough for space-constrained automotive modules. No level translation needed as long as the receiving logic's supply matches the oscillator's Vdd.
There is no last-time-buy deadline or NRND flag on this order code.