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TPS3823-50DBVT Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3823-50DBVT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 14 page TPS3820xx, TPS3823xx, TPS3824xx, TPS3825xx, TPS3828xx PROCESSOR SUPERVISORY CIRCUITS SLVS165E – APRIL 1998 – REVISED DECEMBER 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 features D Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820) D Manual Reset Input (TPS3820/3/5/8) D Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824) and Open-Drain (TPS3828) D Supply Voltage Supervision Range 2.5 V, 3 V, 3.3 V, 5 V D Watchdog Timer (TPS3820/3/4/8) D Supply Current of 15 µA (Typ) D SOT23-5 Package D Temperature Range ...–40°C to 85°C applications D Applications Using DSPs, Microcontrollers, or Microprocessors D Industrial Equipment D Programmable Controls D Automotive Systems D Portable/Battery-Powered Equipment D Intelligent Instruments D Wireless Communications Systems D Notebook/Desktop Computers description The TPS382x family of supervisors provides circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET is asserted when supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor moni- tors VDD and keeps RESET active as long as VDD remains below the threshold voltage VIT–. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT–. When the supply voltage drops below the threshold voltage VIT–, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage VIT– set by an internal voltage divider. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2002, Texas Instruments Incorporated This document contains information on products in more than one phase of development. The status of each device is indicated on the page(s) specifying its electrical characteristics. 3 2 4 5 TPS3820, TPS3823, TPS3828 . . . DBV PACKAGE (TOP VIEW) 1 RESET GND MR VDD WDI 3 2 4 5 TPS3825 . . . DBV PACKAGE (TOP VIEW) 1 RESET GND RESET VDD MR 3 2 4 5 TPS3824 . . . DBV PACKAGE (TOP VIEW) 1 RESET GND RESET VDD WDI RESET MR WDI 100 nF VDD GND TPS3823-33 VDD RESET I/O GND MSP430C325 3.3 V typical application |
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