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MAX6814
5-Pin Watchdog Timer Circuit
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Status
Active: In Production.
Description
The MAX6814 is a low-power watchdog circuit in a tiny 5-
pin SC70 package. This device improves system reliability
by monitoring the system for software code execution
errors. When the watchdog input detects a transitional
edge, the internal watchdog timer clears and restarts,
then begins counting again. If the watchdog timer
exceeds the watchdog timeout period (1.6s typ), the
active-low, push-pull watchdog output asserts for the
watchdog pulse period (140ms min) to alert the system of
the fault.
The MAX6814 consumes only 4µA of supply current and
is fully specified over the extended temperature range.
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Data Sheet
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Key Features
- 4µA Operating Current
- Watchdog Timer with 1.6s Timeout
- 140ms (min) active-low WDO Pulse Period
- Push-Pull Active-Low WDO
- Fully Specified Over Extended Temperature
Range
- No External Components
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Applications/Uses
- Automotive Systems
- Computers and Controllers
- Critical µP Monitoring
- Embedded Controllers
- Intelligent Instruments
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Key Specifications:
| Watchdog Timers |
| Part Number |
Watchdog Feature |
Watchdog Timeout |
Watchdog Output |
ICC
(µA) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
Budgetary Price |
| max |
max w/pins |
See Notes |
| MAX6814 |
| Input (WDI) | | Input/Output (WDI/WDO) | | Watchdog Only |
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1s to 2s |
Push-Pull |
24 |
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5.3 |
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$0.95 @1k |
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See All Watchdog Timers (9)
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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
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX6814XK+
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Active |
SC70;5 pin;5.3 mm²
Outline Drawing:21-0076 (PDF)
Land Pattern: 90-0188 (PDF)
Use pkgcode/variation: X5+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6814XK+T
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Active |
SC70;5 pin;5.3 mm²
Outline Drawing:21-0076 (PDF)
Land Pattern: 90-0188 (PDF)
Use pkgcode/variation: X5+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6814XK-T
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Active |
SC70;5 pin;5.3 mm²
Outline Drawing:21-0076 (PDF)
Land Pattern: 90-0188 (PDF)
Use pkgcode/variation: X5-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-2804
Rev 2;
2006-06-06
This page last modified: 2009-10-13
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