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Maxim > Products > Automotive > MAX691A, MAX693A, MAX800, ...
Maxim > Products > Military and Aerospace > MAX691A, MAX693A, MAX800, ...
Maxim > Products > Supervisors, Voltage Monitors, Sequencers > MAX691A, MAX693A, MAX800, ...
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MAX691A, MAX693A, MAX800, MAX800L, MAX800M
Microprocessor Supervisory Circuits
Industry-Standard, Full-Function µP Supervisor
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Status
Active: In Production.
Description
The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (µP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30µA supply current, 200ms typ reset active delay on power-up, and 6ns chip-enable propagation delay. Features include write protection of CMOS RAM or EEPROM, separate watchdog outputs, backup-battery switchover, and a RESET-bar output that is valid with VCC down to 1V. The MAX691A/MAX800L have a 4.65V typical reset-threshold voltage, and the MAX693A/MAX800M's reset threshold is 4.4V typical. The MAX800L/MAX800M guarantee power-fail accuracies to ±2%.
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Data Sheet
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Key Features
- 200ms Power-OK/Reset Timeout Period
- 1µA Standby Current, 30µA Operating Current
- On-Board Gating of Chip-Enable Signals, 10ns max Delay
- MaxCap® or SuperCap Compatible
- Guaranteed Active-Low RESET Assertion to VCC = +1V
- Voltage Monitor for Power-Fail or Low-Battery Warning
- Power-Fail Accuracy Guaranteed to ±2% (MAX800L/M)
- Available in 16-Pin Narrow SO, Plastic DIP, and TSSOP Packages
- Underwriters Laboratories (UL) Recognized
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Applications/Uses
- Automotive Electronics
- Computers: Desktop, Workstation, Server
- Controllers
- Critical µP Monitoring
- Intelligent Instruments
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Key Specifications:
| Battery Backup Circuits |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
ICC
(µA) |
Features |
Industry Qualified |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max |
max w/pins |
See Notes |
| MAX691A |
4.5 to 5.0 |
| Active High | | Active Low | | Push-Pull |
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100 |
| Adjustable Reset Input | | Battery On | | Chip Enable Gate | | Low Line | | Power Fail Comparator | | Watchdog |
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| Automotive - General | | MIL-STD-883B |
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| -55 to +125 | | -40 to +85 | | 0 to +70 |
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158.4 |
$3.68 @1k |
| MAX693A |
4.0 to 4.5 |
| Automotive - General | | MIL-STD-883B |
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33.4 |
$3.68 @1k |
| MAX800 |
3.3 to 5.5 |
Automotive - General |
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33.4 |
$4.06 @1k |
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See All Battery Backup Circuits (86)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
Notes and Comments
Guarantee power-fail accuracies to ±2% (MAX800L/MAX800M)
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Information Index
Document Ref.: 19-0094
Rev 11;
2008-09-10
This page last modified: 2008-09-10
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