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MAX7705
µP Power Supply Monitor with Reset
Power Supply Monitor with Reset
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Status
Active: In Production.
Description
In applications with microprocessors (µPs) that have a RESET input, the MAX7705 is functionally and socket compatible with the TL7705, but requires no external components. It provides power-supply glitch immunity and a guaranteed power-up reset delay, while typically consuming 1/27th the power from a +5V supply.
The MAX7705 monitors the power supply in µP and digital systems. The RESET output is valid for VCC down to 1V. The device offers excellent circuit reliability and low cost by eliminating external components and adjustments.
A system reset is provided during power-up, power-down, and brownout conditions. When VCC is below the reset threshold, RESET is low and holds the µP in reset. RESET will go high 280ms after VCC rises above the reset threshold. The MAX7705 is available in 8-pin DIP and SO packages.
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Data Sheet
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Key Features
- No External Components
- Low Cost
- Precise Reset Threshold
- 280ms Power-On Reset Delay
- 8-Pin DIP and SO Packages
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Applications/Uses
- Minimum Component Count Low-Cost Processor Systems
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Key Specifications:
| Supervisors (1 Monitored Voltage) |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
ICC
(µA) |
Budgetary Price |
| min |
max |
See Notes |
| MAX7705 |
3.3 to 5.5 |
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85ms to 300ms |
No Watchdog |
150 |
$1.26 @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
Product Guides
Reliability Reports
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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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| MAX7705CPA
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Active |
PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8-1*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX7705CPA+
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Active |
PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8+1*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7705CWA
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Active |
W.SO;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX7705EPA
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Active |
Land Pattern: Not Available
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See data sheet
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| MAX7705EPA+
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Active |
PDIP;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX7705EWA
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Active |
W.SO;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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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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Notes and Comments
+5V, no external components required, socket-compatible with TL7705
Similar Products by Function
| MAX811, MAX812 |
4-Pin µP Voltage Monitors with Manual Reset Input |
| MAX6326, MAX6327, MAX6328, ... |
3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits |
| MAX6332, MAX6333, MAX6334 |
3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits |
| MAX6335, MAX6336, MAX6337 |
4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset |
| MAX803L, MAX803M, MAX803R, ... |
3-Pin Microprocessor Reset Circuits |
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More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-0151
Rev 0;
1993-06-01
This page last modified: 2007-05-30
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