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MAX6801UR31D3-T Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX6801UR31D3-T Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 7 page General Description The MAX6800/MAX6801/MAX6802 microprocessor (µP) supervisory circuits monitor the power supplies in 2.85V to 5.0V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external com- ponents and adjustments. These devices perform a single function—they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for a preset timeout period after VCC has risen above the reset threshold. The only difference among the three devices is their output. The MAX6801 (push/pull) and MAX6802 (open-drain) have an active-low RESET output, while the MAX6800 (push/pull) has an active-high RESET output. The MAX6800/MAX6801 are guaranteed to be in the cor- rect state for VCC down to 0.7V. The MAX6802 is guaran- teed to be in the correct state for VCC down to 1.0V. The reset comparator in these ICs is designed to ignore fast transients on VCC. Reset thresholds are factory- trimmable between 2.63V and 4.80V, in approximately 100mV increments. These devices are available with a 1ms (min), 20ms (min), or 100ms (min) reset pulse width. Ideal for space-critical applications, the MAX6800/MAX6801/MAX6802 come packaged in a 3- pin SOT23. For a lower threshold voltage version, see the MAX6332/MAX6333/MAX6334. Applications Computers Controllers Intelligent Instruments Critical µP/µC Power Monitoring Portable/Battery-Powered Equipment Automotive Features o Ultra-Low 0.7V Operating Supply Voltage o Low 4.0µA Supply Current o Precision Monitoring of 2.85V to 5.0V Power- Supply Voltages o Reset Thresholds Available from 2.63V to 4.80V, in Approximately 100mV Increments o Fully Specified over Temperature o Three Power-On Reset Timeout Periods Available (1ms min, 20ms min, 100ms min) o Low Cost o Three Available Output Structures: Push/Pull RESET, Push/Pull RESET, Open-Drain RESET o Guaranteed RESET/RESET Valid to VCC = 0.7V (MAX6800/MAX6801) o Power-Supply Transient Immunity o No External Components Required o 3-Pin SOT23 Package o Pin Compatible with MAX809/MAX810, MAX6326/MAX6327/MAX6328, and MAX6346/MAX6347/MAX6348 3-Pin, Low-Power µP Reset Circuits ________________________________________________________________ Maxim Integrated Products 1 PART* MAX6800UR_ _D_-T MAX6801UR_ _D_-T MAX6802UR_ _D_-T -40°C to +125°C -40°C to +125°C -40°C to +125°C TEMP. RANGE PIN-PACKAGE 3 SOT23-3 3 SOT23-3 3 SOT23-3 Ordering Information *These devices are available in factory-set VCC reset thresh- olds from 2.63V to 4.80V, in approximately 0.1V increments. Choose the desired reset threshold suffix from Table 1 and insert it in the blanks following “UR” in the part number. Factory-programmed reset timeout periods are also available. Insert the number corresponding to the desired nominal reset timeout period (1 = 1ms min, 2 = 20ms min, 3 = 100ms min) in the blank following “D” in the part number. There are 15 stan- dard versions with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see Selector Guide). Contact the factory for availability of non- standard versions (required order increment is 10,000 pieces). All devices available in tape-and-reel only. Typical Operating Circuit and Pin Configuration appear at end of data sheet. Selector Guide appears at end of data sheet. 19-1933 Rev 1; 2/01 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. |
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