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TLV809K33DBZT データシート(PDF) 7 Page - Texas Instruments |
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TLV809K33DBZT データシート(HTML) 7 Page - Texas Instruments |
7 / 20 page R2 _ + R1 V DD GND RESET TLV809 Oscillator Reference Voltage of 1.137 V Reset Logic + Timer 7 TLV809 www.ti.com SLVSA03D – JUNE 2010 – REVISED MARCH 2016 Product Folder Links: TLV809 Submit Documentation Feedback Copyright © 2010–2016, Texas Instruments Incorporated 8 Detailed Description 8.1 Overview The TLV809 is a 3-pin voltage detector with fixed detection thresholds, an active-low push-pull RESET output, and an internal timer to delay the RESET signal when VDD rises above the threshold voltage. 8.2 Functional Block Diagram 8.3 Feature Description 8.3.1 Supply Voltage Monitoring The device actively monitors its supply voltage to ensure that the power supply is above a certain voltage threshold. The device offers various fixed threshold options that are approximately 10% below several standard supply voltages (2.5 V, 3.0 V, 3.3 V, 5.0 V). 8.3.2 RESET Output The device has a RESET output to indicate the status of the input power supply. RESET is an active low signal, asserting when VDD is below the threshold voltage. When VDD rises above VIT, there is a delay time (td) until RESET deasserts. RESET is a push-pull output stage. 8.4 Device Functional Modes When the input supply voltage is in its recommended operating range (2 V to 6 V), the device is in a normal operational mode. In normal operational mode the device monitors VDD for undervoltage detection. When the input supply is below its recommended operating range, the device is in shutdown mode and therefore tries to assert RESET. |
同様の部品番号 - TLV809K33DBZT |
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同様の説明 - TLV809K33DBZT |
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