admin 发表于 2010-4-17 15:37:01

TC54 Datasheet

http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifTC54 Voltage Detector Datasheet


The TC54 Series are CMOS voltage detectors, suited especially for battery-powered applications because of their extremely low 1uA operating current and small surface-mount packaging. Each part is laser trimmed to the desired threshold voltage which can be specified from 1.1V to 6.0V, for a 2% tolerance. The device includes a comparator, low-current high-precision reference, laser-trimmeddivider,hysteresiscircuit and output driver. The TC54 is available with either an open-drain 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 (V – DET). 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 VHYST, whereupon it resets to a logic HIGH.
   
Parameter NameValue
Vcc Range (V)0.7 to 10
OutputOpen-Drain/Push-Pull
Typical Supply Current (µA)1.1
Reset TypeActive Low
Minimal Reset Voltage (V)4.21, 4.12, 2.94, 2.84, 2.65, 2.06, 1.37
Minimal Reset Pulse Width (ms)0.2
Operating Temp. Range (°C)-40 to 85

   Features
Precise Detection Thresholds..Standard ± 2.0%
Low Current Drain ...............................Typ. 1uA
Wide Detection Range ..........................1.1V to 6.0V
Wide Operating Voltage Range ................0.7V to 10V


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