Description
The TC54 Series are CMOS voltage detectors, suited especially for battery-powered applications because of their extremely low 1µA operating current and small surfacemount packaging. Each part is laser trimmed to the desired threshold voltage which can be specified from in 0.1V steps. The device includes a comparator, low-current highprecision reference, laser-trimmed divider, hysteresis circuit and output driver. The TC54 is available with either an opendrain or complementary output stage. In operation, the TC54’s output (VOUT) remains in the logic HIGH state as long as VIN is greater than the specified threshold voltage (VDET When VIN falls below V DET, the output is driven to a logic LOW. VOUT remains LOW until VIN rises above V DET by an amount V HYST, whereupon it resets to a logic HIGH.
