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Analog Devices Inc./Maxim Integrated MAX6806SA23
- Part No.:
- MAX6806SA23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6806SA23.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:11,333
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Product details
Overview
MAX6806SA23 from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It features a factory-preset 2.3V ±2% reset threshold, active-low push-pull RESET output, and guaranteed operation down to VCC = 1.0V - enabling reliable brownout detection in battery-powered embedded controllers and intelligent instrumentation.
For engineers reviewing the MAX6806SA23 datasheet, MAX6806SA23 pinout, MAX6806SA23 application, or MAX6806SA23 equivalent, key selection considerations include its 2.3V threshold accuracy, 35µA supply current, SOT23-compatible 8-pin SO package, and immunity to fast VCC transients up to 100V/µs - critical for stable reset assertion in portable and industrial µP systems.
Technical Context
The MAX6806SA23 implements a precision bandgap-based voltage comparator with internal hysteresis (VHYST = 0.02–0.03 × VTH−), ensuring stable switching during supply ramp-up/down without oscillation. Its reset assertion is purely analog - no internal timer or delay circuitry - resulting in sub-30µs response to VCC falling below 2.3V.
It operates across −40°C to +85°C with <30ppm/°C reset threshold tempco and supports manual reset only in SOT143 variants - not applicable to the SO-packaged MAX6806SA23. The push-pull output drives CMOS loads directly without external pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.30V ±2% (VTH− at +25°C); ensures accurate brownout detection before system ICs drop below minimum operating voltage. |
| Supply Voltage Range | 1.0V to 5.5V (−40°C to +85°C); enables valid reset assertion even during deep battery discharge. |
| Supply Current | 35µA typical at VCC = 3.6V; minimizes quiescent power in always-on monitoring circuits. |
| RESET Output Type | Active-low, push-pull; eliminates need for external pull-up and supports direct interface to µP reset inputs. |
| Reset Propagation Delay | 30µs max (VCC falling at 1mV/µs); provides rapid fault response without timing uncertainty. |
| Input Transient Immunity | Immune to VCC transients ≤100V/µs; prevents false resets during ESD or switching noise events. |
| Operating Temperature | −40°C to +85°C; qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
MAX6806SA23 is housed in an 8-pin SO (Small Outline) package, pin-compatible with industry-standard MC33064/MC34064 supervisory circuits. This surface-mount package supports automated assembly and offers thermal performance suitable for high-density PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output; sinks current when asserted, sources current when deasserted. |
| 2 | VCC | Main supply input; powers internal comparator and output stage; valid from 1.0V to 5.5V. |
| 3 | N.C. | No internal connection; must be left unconnected or tied to ground per layout best practice. |
| 4 | GND | Analog and digital ground reference; requires low-impedance connection to system ground plane. |
| 5–8 | N.C. | All four pins are not internally connected; no routing or termination required. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% accurate reset threshold | Guarantees detection within 46mV of 2.3V at +25°C - sufficient to catch 5% supply droop before µP malfunction. |
| Push-pull active-low RESET | Drives reset line directly without pull-up resistor, reducing BOM count and eliminating weak-state uncertainty. |
| Valid RESET down to VCC = 1.0V | Ensures deterministic reset assertion through full battery discharge in portable equipment. |
| 35µA supply current | Enables continuous monitoring in energy-constrained devices without compromising battery life. |
| Internal hysteresis (20–30mV) | Prevents output chatter near threshold during slow-ramping supplies or noisy environments. |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
|
Use Scenario: Monitoring Li-ion battery voltage during discharge to prevent data corruption in handheld meters. IC Role / Device Role / Timing Role: Precision voltage detector asserting reset before MCU enters undefined state. Use Value: 2.3V threshold aligns with end-of-discharge cutoff for 3.0V nominal systems, extending usable runtime while guaranteeing safe shutdown. |
Use Scenario: Ensuring clean boot sequence in programmable logic analyzers after AC power interruption. IC Role / Device Role / Timing Role: Supervisory circuit generating immediate reset on VCC undershoot, independent of RC timing. Use Value: Sub-30µs response time prevents metastability in FPGA configuration latches during brownout recovery. |
| Critical µP and µC Power Monitoring | Bar-Code Scanners |
|
Use Scenario: Protecting ARM Cortex-M4-based controllers in industrial gateways from undervoltage-induced firmware crashes. IC Role / Device Role / Timing Role: Analog comparator-based reset generator with no internal clock dependency. Use Value: ±2% threshold accuracy over temperature ensures consistent trip point across −40°C to +85°C ambient range. |
Use Scenario: Maintaining reliable reset during rapid battery swaps in cordless barcode scanners. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor enabling always-on monitoring between scans. Use Value: 35µA ICC allows >1-year standby life on a single CR2032 cell while preserving reset integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6806UA23 | Same 2.3V threshold and push-pull output, but in 8-pin µMAX package (3mm × 3mm vs. SO's 4.9mm × 6.0mm). | Preferred for space-constrained PCBs where footprint reduction outweighs thermal dissipation needs. | Select MAX6806UA23 when board area is limited and thermal load is low; MAX6806SA23 preferred for higher-power or legacy SO footprints. |
| TLV803DB23DBZR | 2.32V threshold (±1%), 300nA IQ, open-drain output - requires external pull-up and lacks push-pull drive strength. | Suitable for ultra-low-power IoT sensors but incompatible with direct µP reset pin drive without level-shifting. | Choose TLV803DB23DBZR only if nanoamp quiescent current is mandatory and system can accommodate open-drain interface. |
Compared with MAX6806UA23, MAX6806SA23 offers better thermal performance and legacy compatibility; versus TLV803DB23DBZR, it delivers robust push-pull drive and faster transient immunity at the cost of higher supply current - making it optimal for industrial µP supervision where reliability trumps ultra-low IQ.
Availability
MAX6806SA23 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, and critical µP and µC power monitoring requiring stable component supply and long-term industrial availability.
Supply support for MAX6806SA23 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) designs precision analog and mixed-signal ICs for industrial, communications, and computing applications, with emphasis on high-reliability power management and sensing solutions.
The MAX6806 family was developed specifically for accurate, low-power supply voltage monitoring in microprocessor systems - delivering factory-trimmed thresholds, minimal external components, and robust transient immunity in compact packages.
FAQ
What is the exact reset threshold voltage of the MAX6806SA23?
The MAX6806SA23 has a factory-preset nominal reset threshold of 2.30V, with guaranteed accuracy of ±2% over temperature (−40°C to +85°C). At +25°C, the electrical specification defines VTH− as 2.254V (min) to 2.346V (max), ensuring precise brownout detection before downstream ICs fail.
Does the MAX6806SA23 support manual reset functionality?
No, the MAX6806SA23 does not support manual reset. Manual reset (MR) input is only available in the 4-pin SOT143 package variants (e.g., MAX6806US23-T). The MAX6806SA23 uses an 8-pin SO package with pins 3, 5–8 designated as N.C., and no MR terminal is implemented.
Can the MAX6806SA23 operate reliably below 2.0V supply voltage?
Yes, the MAX6806SA23 is fully specified to operate down to VCC = 1.0V. Its RESET output remains valid (logic low when asserted) across this entire range, and supply current stays at 35µA typical even at 1.0V - enabling dependable supervision during deep battery discharge scenarios.
Is the MAX6806SA23 pin-compatible with older Maxim supervisory ICs?
Yes, the MAX6806SA23 is pin-compatible with the MC33064, MC34064, MC33164, and MC34164 in the 8-pin SO package. Pin 1 (RESET), Pin 2 (VCC), Pin 4 (GND), and Pins 3/5–8 (N.C.) match exactly - allowing drop-in replacement without PCB modification.
What is the maximum VCC slew rate the MAX6806SA23 can tolerate without false triggering?
The MAX6806SA23 is rated for immunity to VCC transients up to 100V/µs. This specification ensures no spurious reset pulses occur during fast supply disturbances such as ESD events or switching regulator noise - a key advantage over basic RC-based reset circuits.
MAX6806SA23 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:
- 2.3V
- 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
MAX6806SA23 FAQ
1.How can I place an order for MAX6806SA23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806SA23 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 MAX6806SA23 reliable?
The price and inventory of MAX6806SA23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806SA23 is usually 5 days.
3.What payment methods are accepted for MAX6806SA23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806SA23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806SA23?
MAX6806SA23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806SA23 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 MAX6806SA23?
For technical support, including MAX6806SA23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806SA23 requirements.
6.How does Aetrix verify that MAX6806SA23 is sourced from the original manufacturer or authorized distributors?
All MAX6806SA23 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 MAX6806SA23 meets industry standards.
7.What is the process for return or replacement of MAX6806SA23?
All MAX6806SA23 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806SA23, 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 MAX6806SA23 part is unused and in its original packaging.
Return procedure for MAX6806SA23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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