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Analog Devices Inc./Maxim Integrated MAX6806SA26
- Part No.:
- MAX6806SA26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6806SA26.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:10,851
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Product details
Overview
MAX6806SA26 from Maxim Integrated is a precision voltage detector IC designed for reliable power-supply monitoring in microprocessor-based systems. It features a factory-preset 2.6V ±2% reset threshold, active-low push-pull RESET output, and guaranteed operation down to VCC = 1.0V - enabling robust brownout detection in battery-powered instrumentation and embedded controllers.
For engineers reviewing the MAX6806SA26 datasheet, MAX6806SA26 pinout, MAX6806SA26 application, or MAX6806SA26 equivalent, key selection criteria include its 2.6V threshold accuracy, 35µA supply current, manual-reset capability (in SOT143), and compatibility with 1V–5.5V supply rails in space-constrained industrial and portable designs.
Technical Context
The MAX6806SA26 implements a precision bandgap-based voltage comparator with internal hysteresis (VHYST = 0.02–0.03 × VTH−) to prevent output oscillation during supply transients near the 2.6V threshold. Its push-pull output drives logic-level RESET signals without external pull-up components.
It operates across −40°C to +85°C, supports VCC as low as 1.0V while maintaining valid RESET assertion, and exhibits ≤30ppm/°C reset-threshold temperature coefficient - ensuring stable trip points over industrial temperature ranges without calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.60V ±2% (VTH− at +25°C); ensures reliable detection of 2.5V ±5% supply droop before system ICs fail |
| Supply Voltage Range | 1.0V to 5.5V; enables use with Li-ion, 1.8V/2.5V/3.3V/5V rails and deep-brownout recovery |
| Supply Current | 35µA typical at VCC = 3.6V; minimizes quiescent load in always-on battery monitoring circuits |
| RESET Output Type | Active-low, push-pull; eliminates need for external pull-up and directly interfaces to µP reset inputs |
| Reset Delay | 30µs typical (VCC falling at 1mV/µs); provides fast response to supply collapse without false triggering |
| Operating Temp | −40°C to +85°C; qualified for industrial and automotive-adjacent embedded environments |
| Threshold Tempco | ≤30ppm/°C; maintains <±30mV drift over full temperature range - critical for precision power sequencing |
Pinout & Package
MAX6806SA26 is housed in an 8-pin SO (Small Outline) package with standard 150-mil width and 1.27mm pitch. Pin 1 is RESET (active-low push-pull), Pin 2 is VCC, Pin 4 is GND; Pins 3 and 5–8 are no-connect (N.C.).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output; sinks current when VCC < 2.6V; asserts reset to µP without external components |
| 2 | VCC | Main supply input; powers internal comparator and output stage; valid from 1.0V to 5.5V |
| 4 | GND | Analog and digital ground reference; must be low-impedance for accurate threshold sensing |
| 3,5–8 | N.C. | No internal connection; left unconnected on PCB; no routing or thermal considerations required |
Key Features
| Feature | Design Value |
|---|---|
| ±2% accurate 2.6V threshold | Guarantees reset assertion before 2.5V system ICs drop out of spec - no trimming or calibration needed |
| 35µA supply current | Enables multi-year battery life in portable instruments with continuous power monitoring |
| RESET valid to VCC = 1.0V | Ensures deterministic reset state even during severe brownouts or battery depletion |
| Immunity to VCC transients | Rejects negative-going spikes ≤100µs (at 100mV overdrive), eliminating false resets in noisy power environments |
| Hysteresis (20–30mV) | Prevents chatter during slow-rising/falling supplies - critical for clean power-up sequencing |
Applications
| Portable Battery-Powered Equipment | Intelligent Instruments |
|---|---|
Use Scenario: Handheld multimeters and data loggers powered by single-cell Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Precision voltage detector monitoring VCC to assert reset before ADC or MCU brownout. Use Value: Prevents corrupted measurements or firmware crashes by guaranteeing reset at ≥2.548V (min threshold), aligning with 2.5V system rail tolerance. |
Use Scenario: Benchtop oscilloscopes and spectrum analyzers requiring stable initialization after AC power cycling. IC Role / Device Role / Timing Role: Primary supervisor IC generating clean, glitch-free reset pulse during power-up and brownout. Use Value: 30µs delay and ±2% threshold ensure reset holds long enough for FPGA configuration while avoiding premature release. |
| Critical µP and µC Systems | Bar-Code Scanners |
Use Scenario: Industrial PLC controllers where unexpected reset could halt production lines. IC Role / Device Role / Timing Role: Fail-safe power monitor asserting active-low RESET to ARM Cortex-M or PIC microcontrollers. Use Value: Push-pull output drives reset pin directly; no pull-up required - reducing BOM count and layout risk. |
Use Scenario: Ruggedized handheld scanners used in warehouses with frequent battery swaps and ESD exposure. IC Role / Device Role / Timing Role: Power integrity guardian detecting rapid VCC sag during motor activation or RF transmission bursts. Use Value: Immunity to 100µs transients prevents spurious resets during barcode laser firing or Bluetooth handshake. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LT26D3+ | Same 2.6V ±2% threshold, but active-low open-drain output; requires external pull-up resistor | Suitable where shared reset bus or level-shifting across multiple supplies is needed | Choose if system uses wired-OR reset architecture or needs RESET pulled up to >VCC |
| TPS3808G33DBVR | 2.93V fixed threshold (not 2.6V); 1.8–6.0V VCC range; 2.5µA quiescent current; adjustable delay option | Better for ultra-low-power applications, but mismatched threshold requires redesign of supply margining | Select only if 2.93V threshold fits system rail tolerance and µA-level current savings outweigh threshold shift |
Compared with MAX6806SA26, MAX6326LT26D3+ offers open-drain flexibility at the cost of added component count, while TPS3808G33DBVR trades threshold accuracy and push-pull simplicity for lower current and wider VCC range - neither is pin-compatible, and both require schematic and layout review for integration.
Availability
MAX6806SA26 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, critical µP and µC systems, bar-code scanners, and power monitoring applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6806SA26 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX6806 series was designed specifically for precision power-supply monitoring in resource-constrained embedded systems - delivering factory-trimmed accuracy, ultra-low current, and robust transient immunity without external components.
FAQ
What is the exact reset threshold voltage of the MAX6806SA26?
The MAX6806SA26 has a factory-preset nominal reset threshold of 2.60V, with guaranteed accuracy of ±2% over temperature and supply variations - meaning the actual falling threshold (VTH−) is specified from 2.548V to 2.652V at +25°C, and remains within tighter bounds across −40°C to +85°C per its 30ppm/°C tempco.
Does the MAX6806SA26 support manual reset functionality?
No - the MAX6806SA26 in the 8-pin SO package does not include a manual reset (MR) input. Manual reset is only available on the 4-pin SOT143 variants (e.g., MAX6806US26-T). The SO-packaged MAX6806SA26 relies solely on VCC monitoring and has no MR pin; all pins except 1 (RESET), 2 (VCC), and 4 (GND) are no-connect.
What is the minimum supply voltage at which MAX6806SA26 guarantees valid RESET assertion?
The MAX6806SA26 guarantees RESET remains asserted (low) for VCC down to 1.0V, as confirmed in its Electrical Characteristics table. Below 1.0V, the output becomes high-impedance; for applications requiring valid logic levels down to 0V, an external pulldown resistor on the RESET line is recommended per Maxim's Figure 4 application note.
Can MAX6806SA26 replace MC34064P-26R2 in existing designs?
No - although both are 2.6V reset detectors, MAX6806SA26 is an 8-pin SO device with pins 1=RESET, 2=VCC, 4=GND, and N.C. on remaining pins, whereas MC34064P-26R2 is an 8-pin DIP/SO with different pinout (pin 1=GND, pin 2=VCC, pin 3=RESET). They are not pin-compatible, and MAX6806SA26 lacks the MC34064's built-in delay capacitor pin.
Is the MAX6806SA26 RoHS compliant and lead-free?
Yes - MAX6806SA26 is RoHS compliant and lead-free. Per Maxim's Package Information section, the "-SA" suffix denotes the 8-pin SO package, and Maxim confirms RoHS compliance for all current production lots; the package drawing and land pattern (Outline No. 21-0041) meet JEDEC MS-012 standards with lead-free terminations.
MAX6806SA26 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 30µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6806SA26 FAQ
1.How can I place an order for MAX6806SA26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806SA26 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6806SA26 reliable?
The price and inventory of MAX6806SA26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806SA26 is usually 5 days.
3.What payment methods are accepted for MAX6806SA26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806SA26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806SA26?
MAX6806SA26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806SA26 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6806SA26?
For technical support, including MAX6806SA26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806SA26 requirements.
6.How does Aetrix verify that MAX6806SA26 is sourced from the original manufacturer or authorized distributors?
All MAX6806SA26 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6806SA26 meets industry standards.
7.What is the process for return or replacement of MAX6806SA26?
All MAX6806SA26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806SA26, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6806SA26 part is unused and in its original packaging.
Return procedure for MAX6806SA26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6806SA26 Tags
-
MIC826SYMT-TR
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APX803S-31SA-7
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APX803L20-29SA-7
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MCP130T-315I/TT
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MCP120T-475I/TT
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