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MAX6342, MAX6343, MAX6344, MAX6345
6-Pin µP Reset Circuit with Power-Fail Comparator
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Status
Active: In Production.
Description
The MAX6342-MAX6345 family of microprocessor (µP) supervisory circuits monitors power supplies in digital systems. These devices significantly improve system reliability 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 active-low 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 active-low 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.
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Data Sheet
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Key Features
- Small 6-Pin SOT23 Package
- Precision Factory-Set VCC Reset Thresholds Between 2.33V and 4.63V
- Guaranteed Active-Low 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
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Applications/Uses
- Embedded Control Systems
- Multivoltage Systems
- Network Equipment
- Portable Battery-Powered Equipment
- Portable Computing
- Telecom Equipment
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Key Specifications:
| Supervisors (1 Monitored Voltage) |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
Budgetary Price |
| min |
@ +25°C |
max |
See Notes |
| MAX6342 |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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85ms to 300ms |
No Watchdog |
| Adjustable Reset Input | | Manual Reset | | Power Fail Comparator/Low Battery Detect |
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1.5 |
40 |
$1.29 @1k |
| MAX6343 |
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$1.28 @1k |
| MAX6344 |
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$1.29 @1k |
| MAX6345 |
| Active High | | Active Low | | Push-Pull |
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$1.29 @1k |
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See All Supervisors (1 Monitored Voltage) (274)
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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
Application Notes
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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| MAX6345RUT+T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6345RUT-T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6-4*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6345SUT+T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6345SUT-T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6-4*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6345TUT+T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6345TUT-T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6-4*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6345ZUT+
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6345ZUT+T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6345ZUT-T
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Active |
SOT;6 pin;9 mm²
Outline Drawing:21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6-4*
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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.: 19-1568
Rev 2;
2006-06-07
This page last modified: 2007-08-23
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