MAX819
MAX819
PRODUCTION+5V Microprocessor Supervisory Circuits
Low-Power, Small Size Microprocessor Supervisory Circuit with Battery-Backup
- Part Models
- 9
- 1ku List Price
- Starting From $4.39
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Overview
- Precision Supply-Voltage Monitor:
- 4.65V (MAX81_L)
- 4.40V (MAX81_M)
- 11µA Quiescent Supply Current
- 200ms Reset Time Delay
- Watchdog Timer with 1.6sec Timeout (MAX817/MAX818)
- Battery-Backup Power Switching; Battery Voltage Can Exceed VCC
- Battery Freshness Seal
- On-Board, 3ns Gating of Chip-Enable Signals (MAX818)
- Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning (MAX817/MAX819)
- Manual Reset Input (MAX819)
The MAX817/MAX818/MAX819 microprocessor (µP) supervisory circuits simplify power-supply monitoring, battery control, and chip-enable gating in µP systems by reducing the number of components required. These devices are designed for use in +5V-powered systems. Low supply current (11µA typical) and small package size make these devices ideal for portable applications. The MAX817/MAX818/MAX819 are specifically designed to ignore fast transients on VCC. Other supervisory functions include active-low reset, backup-battery switchover, watchdog input, battery freshness seal, and chip-enable gating. The Selector Guide in the full data sheet lists the specific functions available from each device.
These devices offer two pretrimmed reset threshold voltages for ±5% or ±10% power supplies: 4.65V for the L versions and 4.40V for the M versions. The MAX817/ MAX818/MAX819 are available in space-saving µMAX® packages, as well as 8-pin DIP/SO.
Applications
- Battery-Powered Computers/Controllers
- Critical µP Monitoring
- Embedded Controllers
- Intelligent Instruments
- Portable Equipment
Documentation
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 |
|---|---|---|---|
| MAX819LCSA+ | Small-Outline IC Narrow (0.15in) | ||
| MAX819LCSA+T | Small-Outline IC Narrow (0.15in) | ||
| MAX819LESA+ | Small-Outline IC Narrow (0.15in) | ||
| MAX819LEUA+ | Micro-MAX, Thin Shrink Small-Outline | ||
| MAX819MCPA+ | Plastic Dual-In-Line, Narrow (0.3in) | ||
| MAX819MCUA+ | Micro-MAX, Thin Shrink Small-Outline | ||
| MAX819MCUA+T | Micro-MAX, Thin Shrink Small-Outline | ||
| MAX819MESA+ | Small-Outline IC Narrow (0.15in) | ||
| MAX819MESA+T | Small-Outline IC Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 27, 2023 - 2361N1 WAFER FAB |
||
| MAX819LCSA+ | PRODUCTION | |
| MAX819LCSA+T | PRODUCTION | |
| MAX819LESA+ | PRODUCTION | |
| MAX819LEUA+ | PRODUCTION | |
| MAX819MCPA+ | PRODUCTION | |
| MAX819MCUA+ | PRODUCTION | |
| MAX819MCUA+T | PRODUCTION | |
| MAX819MESA+ | PRODUCTION | |
| MAX819MESA+T | PRODUCTION | |
|
Apr 7, 2023 - 2361C WAFER FAB |
||
| MAX819LCSA+ | PRODUCTION | |
| MAX819LCSA+T | PRODUCTION | |
| MAX819LESA+ | PRODUCTION | |
| MAX819LEUA+ | PRODUCTION | |
| MAX819MCPA+ | PRODUCTION | |
| MAX819MCUA+ | PRODUCTION | |
| MAX819MCUA+T | PRODUCTION | |
| MAX819MESA+ | PRODUCTION | |
| MAX819MESA+T | PRODUCTION | |
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| MAX819LCSA+ | PRODUCTION | |
| MAX819LCSA+T | PRODUCTION | |
| MAX819LESA+ | PRODUCTION | |
|
Sep 19, 2018 - 1753N ASSEMBLY |
||
| MAX819MCUA+ | PRODUCTION | |
| MAX819MCUA+T | PRODUCTION | |
|
Apr 20, 2026 - 2571B PIN/ERRATA |
||
| MAX819MCUA+T | PRODUCTION | |
|
May 22, 2018 - 1702N ASSEMBLY |
||
| MAX819MESA+ | PRODUCTION | |
| MAX819MESA+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 4 | ||
| MAX6361 | PRODUCTION | SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup |
| MAX6362 | PRODUCTION | SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup |
| MAX6363 | PRODUCTION | SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup |
| MAX6364 | PRODUCTION | SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup |
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