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TL7705BMUB Arkusz danych(PDF) 1 Page - Texas Instruments |
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TL7705BMUB Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 20 page TL7702B, TL7705B, TL7733B SUPPLY-VOLTAGE SUPERVISORS SLVS037M – SEPTEMBER 1989 – REVISED MAY 2003 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Power-On Reset Generator D Automatic Reset Generation After Voltage Drop D RESET Output Defined From VCC ≥ 1 V D Precision Voltage Sensor D Temperature-Compensated Voltage Reference D True and Complement Reset Outputs D Externally Adjustable Pulse Duration 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 NC SENSE NC RESET NC NC RESIN NC CT NC TL7705BM ...FK PACKAGE (TOP VIEW) 1 2 3 4 8 7 6 5 REF RESIN CT GND VCC SENSE RESET RESET TL77xxBC ...D OR P PACKAGE TL7705BM . . . JG PACKAGE TL7705BQ ...D PACKAGE (TOP VIEW) 1 2 3 4 5 10 9 8 7 6 NC REF RESIN CT GND NC VCC SENSE RESET RESET TL7705BM ...U PACKAGE (TOP VIEW) NC – No internal connection NC – No internal connection description/ordering information The TL7702B, TL7705B, and TL7733B are integrated-circuit supply-voltage supervisors designed for use as reset controllers in microcomputer and microprocessor systems. The supply-voltage supervisor monitors the supply for undervoltage conditions at the SENSE input. During power up, the RESET output becomes active (low) when VCC attains a value approaching 1 V. As VCC approaches 3 V (assuming that SENSE is above VT+), the delay-timer function activates a time delay, after which outputs RESET and RESET go inactive (high and low, respectively). When an undervoltage condition occurs during normal operation, outputs RESET and RESET go active. To ensure that a complete reset occurs, the reset outputs remain active for a time delay after the voltage at the SENSE input exceeds the positive-going threshold value. The time delay is determined by the value of the external capacitor CT: td ≈ 2.6 × 104 × CT, where CT is in farads (F) and td is in seconds (s). An external capacitor (typically 0.1 µF) must be connected to REF to reduce the influence of fast transients in the supply voltage. The TL7702BC, TL7705BC, and TL7733BC are characterized for operation from 0 °C to 70°C. The TL7702BI, TL7705BI, and TL7733BI are characterized for operation from –40 °C to 85°C. The TL7705BQ is characterized for operation from –40 °C to 125°C. The TL7705BM is characterized for operation from –55°C to 125°C. 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. The TL7705BM is obsolete and no longer is supplied. Copyright 2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. |
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