The DSC1033CI1-012.8000T is a MEMS-based XO (standard oscillator) from Microchip's PureSilicon™ series, delivering a 12.8 MHz CMOS output from a 3.3V supply rail. The ±50 ppm frequency stability holds the clock edge within 0.64 ns of nominal at 12.8 MHz, tight enough for a UART baud-rate generator or a simple MCU system clock.
Industrial temperature range and standby power
The 3 mA typical supply current is modest for a 12.8 MHz rail; the real power story is the standby (power-down) function, which drops the disable current to 1 µA. For a battery-backed real-time clock or a remote sensor that sleeps between transmissions, that 1 µA leakage is below the self-discharge rate of a typical coin cell.