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MAX6345-UT-T Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX6345-UT-T Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 8 page General Description The MAX6342–MAX6345 family of microprocessor (µP) supervisory circuits monitors power supplies in digital sys- tems. These devices significantly improve system reliabili- ty and accuracy compared to separate ICs or discrete components. The MAX6342–MAX6345 provide factory-trimmed VCC reset threshold voltages from 2.33V to 4.63V and operate with supply voltages between +1V and +5.5V. A +1.25V threshold detector allows for a power-fail warning, for low-battery detection, or for monitoring another power supply. The MAX6342 contains an MR input and an active-low push-pull reset. The MAX6343 and MAX6344 are identical to the MAX6342 except they provide an active-low, open-drain reset and an active-high, push- pull reset, respectively. The MAX6345 provides a second reset output in place of the MR input to give it an active- high push-pull reset and an active-low push-pull reset. All of the devices are packaged in a miniature 6-pin SOT23. Applications Portable Computers Telecom Equipment Networking Equipment Portable/Battery-Powered Equipment Multivoltage Systems Embedded Control Systems Features ♦ Small 6-Pin SOT23 Package ♦ Precision Factory-Set VCC Reset Thresholds Between 2.33V and 4.63V ♦ Guaranteed RESET Valid to VCC = +1V ♦ 100ms min Reset Pulse Width ♦ Debounced CMOS-Compatible Manual-Reset Input ♦ Voltage Monitor for Power-Fail or Low-Battery Warning 6-Pin µP Reset Circuit with Power-Fail Comparator ________________________________________________________________ Maxim Integrated Products 1 GND PFI 16 5 VCC ( ) ARE FOR MAX6344 ONLY. TOP VIEW 2 34 RESET (RESET) PFO MR MAX6342 MAX6343 MAX6344 SOT23-6 Selector Guide 1 Selector Guide 2 19-1568; Rev 2; 12/05 PART MAX6342_UT-T MAX6343_UT-T MAX6344_UT-T -40°C to +125°C -40°C to +125°C -40°C to +125°C TEMP RANGE PIN-PACKAGE 6 SOT23-6 6 SOT23-6 6 SOT23-6 Note: The MAX6342–MAX6345 are available with factory-set reset thresholds from 2.33V to 4.63V (see Selector Guides 1, 2). Insert the letter corresponding to the desired nominal reset threshold into the blank following the part number. There is a 2500 piece order increment required for the SOT package. SOT Top Marks table appears at end of data sheet. Devices are available in both leaded and lead-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering. Pin Configurations Ordering Information MAX6345_UT-T -40°C to +125°C 6 SOT23-6 PART PUSH-PULL RESET OUTPUT OPEN-DRAIN RESET OUTPUT PUSH-PULL RESET OUTPUT MAX6342 ✔ — — MAX6343 — ✔ — MAX6344 — — ✔ MAX6345 ✔ — ✔ MANUAL-RESET INPUT ✔ ✔ ✔ — Typical Operating Circuit appears at end of data sheet. Pin Configurations continued at end of data sheet. SUFFIX RESET THRESHOLD (V) L 4.63 M 4.38 T 3.08 S 2.93 R 2.63 Z 2.33 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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