26 MHz MEMS oscillator with standby — what it does
The DSC1033BC1-026.6000T is a MEMS-based XO (standard oscillator) delivering a 26 MHz clock output in CMOS logic levels from a 3.3 V supply rail. The standby (power-down) function on pin 1 pulls the output to high-impedance and drops the supply current to 1 µA max — useful for battery-operated equipment that needs to gate the clock tree during sleep modes without a separate load-switch.
Microchip has marked the DSC1033BC1-026.6000T as obsolete. No official successor or pin-compatible replacement is listed by the manufacturer.