MAX6326
MAX6326
PRODUCTION3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
Industry's Lowest-Power Reset IC Consumes Only 500nA with No External Components Required
- Part Models
- 28
- 1ku List Price
- Starting From $2.02
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Overview
- Ultra-Low 1µA (max) Supply Current (MAX6326/MAX6327/MAX6328)
- Precision Monitoring of 2.5V, 3V, 3.3V, and 5V Power-Supply Voltages
- Reset Thresholds Available from 2.2V to 4.63V
- Fully Specified Over Temperature
- 100ms (min) Power-On Reset Pulse Width
- Low Cost
- Available in Three Versions: Push-Pull Active-Low RESET, Push-Pull RESET, and Open-Drain Active-Low RESET
- Power-Supply Transient Immunity
- No External Components
- 3-Pin SC70/SOT23 Packages
- Pin Compatible with MAX803/MAX809/MAX810
The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348 microprocessor (µP) supervisory circuits monitor the power supplies in µP and digital systems. These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 2.5V, 3V, 3.3V, and 5V powered circuits.
These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 100ms after VCC has risen above the reset threshold. The only difference between the devices is their output. The MAX6326/MAX6346 (push-pull) and MAX6328/MAX6348 (open-drain) have an active-low reset output. The MAX6327/MAX6347 have an active-high push-pull reset output. All of these parts are guaranteed to be in the correct state for VCC down to 1V. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds are factory-trimmable between 2.2V and 4.63V, in approximately 100mV increments. Twenty-one standard versions are available. Contact the factory for availability of nonstandard versions.
Ultra-low supply currents (1µA max for the MAX6326/MAX6327/MAX6328) make these parts ideal for use in portable equipment. All six devices are available in space-saving SOT23 and SC70 packages.
Applications
- Computers: Desktop, Workstation, Server
- Controllers
- Critical µP and µC Power Monitoring
- Intelligent Instruments
- Portable Battery-Powered Equipment
Documentation
Data Sheet 1
Design Note 3
Technical Articles 3
Product Selector Card 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX6326UR22+ | SOT_23 | ||
| MAX6326UR22+T | SOT_23 | ||
| MAX6326UR23+ | SOT_23 | ||
| MAX6326UR23+T | SOT_23 | ||
| MAX6326UR26+ | SOT_23 | ||
| MAX6326UR26+T | SOT_23 | ||
| MAX6326UR27+ | SOT_23 | ||
| MAX6326UR27+T | SOT_23 | ||
| MAX6326UR28+ | SOT_23 | ||
| MAX6326UR28+T | SOT_23 | ||
| MAX6326UR29+ | SOT_23 | ||
| MAX6326UR29+T | SOT_23 | ||
| MAX6326UR31+ | SOT_23 | ||
| MAX6326UR31+T | SOT_23 | ||
| MAX6326XR22+ | Single Chip Package | ||
| MAX6326XR22+T | Single Chip Package | ||
| MAX6326XR25+ | Single Chip Package | ||
| MAX6326XR25+T | Single Chip Package | ||
| MAX6326XR26+ | Single Chip Package | ||
| MAX6326XR26+T | Single Chip Package | ||
| MAX6326XR28+ | Single Chip Package | ||
| MAX6326XR28+T | Single Chip Package | ||
| MAX6326XR29+ | Single Chip Package | ||
| MAX6326XR29+T | Single Chip Package | ||
| MAX6326XR30+ | Single Chip Package | ||
| MAX6326XR30+T | Single Chip Package | ||
| MAX6326XR31+ | Single Chip Package | ||
| MAX6326XR31+T | Single Chip Package |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 27, 2023 - 2361N1 WAFER FAB |
||
| MAX6326UR22+ | PRODUCTION | |
| MAX6326UR22+T | PRODUCTION | |
| MAX6326UR23+ | PRODUCTION | |
| MAX6326UR23+T | PRODUCTION | |
| MAX6326UR26+ | PRODUCTION | |
| MAX6326UR26+T | PRODUCTION | |
| MAX6326UR27+ | PRODUCTION | |
| MAX6326UR27+T | PRODUCTION | |
| MAX6326UR28+ | PRODUCTION | |
| MAX6326UR28+T | PRODUCTION | |
| MAX6326UR29+ | PRODUCTION | |
| MAX6326UR29+T | PRODUCTION | |
| MAX6326UR31+ | PRODUCTION | |
| MAX6326UR31+T | PRODUCTION | |
|
Feb 5, 2015 - 1370_CANCELLATION ASSEMBLY |
||
| MAX6326UR22+ | PRODUCTION | |
| MAX6326UR23+T | PRODUCTION | |
| MAX6326UR28+T | PRODUCTION | |
| MAX6326UR31+T | PRODUCTION | |
|
Sep 18, 2014 - 1370_ERRATA ASSEMBLY |
||
| MAX6326UR22+ | PRODUCTION | |
| MAX6326UR22+T | PRODUCTION | |
| MAX6326UR23+ | PRODUCTION | |
| MAX6326UR23+T | PRODUCTION | |
| MAX6326UR26+ | PRODUCTION | |
| MAX6326UR26+T | PRODUCTION | |
| MAX6326UR27+ | PRODUCTION | |
| MAX6326UR27+T | PRODUCTION | |
| MAX6326UR28+T | PRODUCTION | |
| MAX6326UR29+ | PRODUCTION | |
| MAX6326UR29+T | PRODUCTION | |
| MAX6326UR31+ | PRODUCTION | |
| MAX6326UR31+T | PRODUCTION | |
|
Apr 20, 2026 - 2571C PIN/ERRATA |
||
| MAX6326UR22+T | PRODUCTION | |
| MAX6326UR26+T | PRODUCTION | |
| MAX6326UR28+T | PRODUCTION | |
| MAX6326UR29+T | PRODUCTION | |
| MAX6326UR31+T | PRODUCTION | |
|
Jun 29, 2018 - 1703N ASSEMBLY |
||
| MAX6326UR26+T | PRODUCTION | |
| MAX6326UR28+T | PRODUCTION | |
| MAX6326UR31+T | PRODUCTION | |
|
Jul 21, 2020 - 2072 MECHANICAL DATASHEET |
||
| MAX6326XR22+ | PRODUCTION | |
| MAX6326XR22+T | PRODUCTION | |
| MAX6326XR25+ | ||
| MAX6326XR25+T | ||
| MAX6326XR26+ | PRODUCTION | |
| MAX6326XR26+T | PRODUCTION | |
| MAX6326XR28+ | PRODUCTION | |
| MAX6326XR28+T | PRODUCTION | |
| MAX6326XR29+ | PRODUCTION | |
| MAX6326XR29+T | PRODUCTION | |
| MAX6326XR30+ | PRODUCTION | |
| MAX6326XR30+T | PRODUCTION | |
| MAX6326XR31+ | PRODUCTION | |
| MAX6326XR31+T | PRODUCTION | |
|
Apr 15, 2020 - 2038N ASSEMBLY |
||
| MAX6326XR22+ | PRODUCTION | |
| MAX6326XR22+T | PRODUCTION | |
| MAX6326XR26+ | PRODUCTION | |
| MAX6326XR26+T | PRODUCTION | |
| MAX6326XR28+ | PRODUCTION | |
| MAX6326XR28+T | PRODUCTION | |
| MAX6326XR30+ | PRODUCTION | |
| MAX6326XR30+T | PRODUCTION | |
|
Apr 20, 2026 - 2571 PIN/ERRATA |
||
| MAX6326XR22+T | PRODUCTION | |
| MAX6326XR26+T | PRODUCTION | |
| MAX6326XR28+T | PRODUCTION | |
| MAX6326XR29+T | PRODUCTION | |
| MAX6326XR30+T | PRODUCTION | |
| MAX6326XR31+T | PRODUCTION | |
|
Apr 16, 2020 - 2038A ASSEMBLY |
||
| MAX6326XR29+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Supervisory Circuits & Reset ICs 6 | ||
| MAX6332 | Obsolete | 3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits |
| MAX6333 | PRODUCTION | 3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits |
| MAX6334 | PRODUCTION | 3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits |
| MAX6335 | PRODUCTION | 4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset |
| MAX6336 | PRODUCTION | 4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset |
| MAX6337 | PRODUCTION | 4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset |