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Analog Devices Inc./Maxim Integrated MAX6806SA46
- Part No.:
- MAX6806SA46
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6806SA46.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:10,084
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Product details
Overview
MAX6806SA46 from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It provides an active-low, push-pull RESET output with a factory-trimmed 4.6V ±2% threshold, valid down to VCC = 1.0V, and consumes only 35µA typical supply current. It is used in critical µP/µC power monitoring applications where reliable reset assertion during brownout or power-down is essential.
For engineers reviewing the MAX6806SA46 datasheet, MAX6806SA46 pinout, MAX6806SA46 application, or MAX6806SA46 equivalent, key selection considerations include its 4.6V reset threshold accuracy, push-pull active-low output drive capability, immunity to fast VCC transients (up to 100V/µs), operation over –40°C to +85°C, and compatibility with 8-pin SO package layouts.
Technical Context
The MAX6806SA46 implements a precision bandgap-based voltage comparator with internal hysteresis (VHYST = 0.02–0.03 × VTH−) to prevent output chatter near the 4.6V threshold. Its reset assertion is triggered on VCC falling below VTH− = 4.508V (min) at +25°C, with guaranteed operation across –40°C to +85°C and tempco ≤30ppm/°C.
It features a manual-reset input (MR) only in SOT143 packages - not present in the 8-pin SO variant - and delivers a logic-low RESET output sinking up to 1.0mA at VCC = 2.0V while maintaining VOL ≤ 0.4V. RESET remains valid for VCC ≥ 1.0V, enabling robust low-voltage supervision in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.6V ±2% (4.508V–4.692V at +25°C); ensures reliable reset before system ICs drop below minimum operating voltage |
| Supply Current | 35µA typical at VCC = 3.6V; enables long battery life in portable equipment |
| RESET Output Type | Active-low, push-pull; drives CMOS/TTL loads directly without external pull-up |
| VCC Operating Range | 1.0V to 5.5V; supports valid reset assertion even during deep brownout |
| Reset Delay | 30µs typical (VCC falling at 1mV/µs); provides fast response to supply collapse |
| Hysteresis | 0.02–0.03 × VTH−; prevents oscillation during slow or noisy VCC transitions |
| Tempco | ≤30ppm/°C; maintains threshold stability across industrial temperature range |
Pinout & Package
MAX6806SA46 is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch. Pin 1 is RESET (active-low push-pull output), Pin 4 is GND, Pin 5 is VCC, and Pins 2, 3, 6–8 are no-connect (N.C.).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output; sinks current when asserted, drives high-impedance loads directly |
| 2 | N.C. | No internal connection; must be left unconnected or tied to GND per layout best practice |
| 3 | N.C. | No internal connection; electrically isolated from die; no routing required |
| 4 | GND | Analog ground reference; requires low-impedance connection to system ground plane |
| 5 | VCC | Supply voltage input (1.0V–5.5V); bypass with 0.1µF ceramic capacitor close to pin |
| 6 | N.C. | No internal connection; floating; avoid routing signals nearby to prevent coupling |
| 7 | N.C. | No internal connection; unused silicon pad; no thermal or electrical function |
| 8 | N.C. | No internal connection; reserved for future variants; leave unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.6V threshold | ±2% accuracy eliminates need for external resistor dividers or calibration |
| Push-pull active-low RESET | Drives TTL/CMOS inputs directly without pull-up resistors or level-shifting circuitry |
| Valid RESET down to VCC = 1.0V | Ensures deterministic reset state during deep brownout or battery depletion |
| 35µA supply current | Minimizes quiescent power draw in always-on supervisory functions |
| Immunity to VCC transients | Withstands negative-going transients up to 100V/µs without false triggering |
Applications
| Critical µP Power Monitoring | Portable/Battery-Powered Equipment |
|---|---|
Use Scenario: Monitoring 5V supply rails in embedded controllers where undervoltage can corrupt firmware execution or memory writes. IC Role / Device Role / Timing Role: Voltage detector asserting active-low RESET to hold µP in reset until VCC stabilizes above 4.6V. Use Value: Prevents illegal instruction fetch or register corruption during power ramp-up or brownout by guaranteeing reset assertion before VCC falls below 4.508V. | Use Scenario: Supervising Li-ion battery-backed systems where supply voltage drops gradually during discharge. IC Role / Device Role / Timing Role: Precision threshold detection with 1.0V operational floor, enabling reset assertion even as battery sags to end-of-life voltage. Use Value: Extends usable battery runtime by allowing µP to operate down to 1.0V while still ensuring clean reset before functional failure. |
| Bar-Code Scanners | Intelligent Instruments |
Use Scenario: Ensuring reliable boot sequence in handheld scanners subject to mechanical shock-induced power glitches. IC Role / Device Role / Timing Role: Immune-to-transient voltage supervisor providing glitch-free reset during cable flex or connector bounce. Use Value: Eliminates spurious reboots caused by sub-10µs VCC dips, improving field reliability and user experience. | Use Scenario: Power monitoring in calibrated test equipment requiring stable initialization before measurement cycles begin. IC Role / Device Role / Timing Role: High-accuracy (±2%) reset generator with <30ppm/°C drift, ensuring consistent startup behavior across temperature. Use Value: Guarantees repeatable power-on timing and eliminates calibration drift due to supply-monitoring inaccuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326TUT46+T | 4.6V ±0.5% threshold, 1.2µA supply current, SC70-3 package | Lacks push-pull drive; open-drain output requires external pull-up | Select when ultra-low quiescent current is prioritized over drive strength and board space is constrained |
| TPS3808G33DBVR | 3.3V fixed threshold, 1.8µA supply current, SOT23-6 package | Different threshold; no 4.6V option; includes watchdog timer and programmable delay | Select when system requires both reset and watchdog functionality, and 3.3V rail supervision suffices |
Compared with MAX6806SA46, MAX6326TUT46+T offers tighter threshold accuracy and lower ICC but sacrifices push-pull drive and requires external biasing; TPS3808G33DBVR adds watchdog capability but targets 3.3V systems and cannot replace 4.6V supervision without redesign.
Availability
MAX6806SA46 is available at Aetrix Electronics and suitable for critical µP power monitoring, portable/battery-powered equipment, bar-code scanners, and intelligent instruments requiring stable component supply and industrial-temperature operation.
Supply support for MAX6806SA46 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, mixed-signal, and power-management ICs for industrial, computing, communications, and consumer applications.
The MAX6806 series belongs to Maxim's voltage supervisor product line, engineered specifically for accurate, low-power, single-supply reset generation in µP/µC systems with strict threshold and timing requirements.
FAQ
What is the exact reset threshold voltage of MAX6806SA46 and how tightly is it specified?
The MAX6806SA46 has a nominal reset threshold of 4.6V, guaranteed over temperature to be between 4.508V and 4.692V (±2%) at +25°C. This tolerance holds across the full –40°C to +85°C operating range, with a maximum tempco of 30ppm/°C, making it suitable for applications demanding precise power-rail supervision without calibration.
Does MAX6806SA46 support manual reset functionality?
No, MAX6806SA46 does not support manual reset. The MR (manual reset) input is only available in the 4-pin SOT143 package variants (e.g., MAX6806US46-T). The MAX6806SA46 uses an 8-pin SO package with Pins 2, 3, 6–8 designated as N.C., and no internal MR circuitry is connected.
What is the minimum VCC voltage at which MAX6806SA46 guarantees a valid RESET output?
MAX6806SA46 guarantees a valid active-low RESET output for VCC ≥ 1.0V. Below 1.0V, the RESET output becomes high-impedance. This specification allows the device to assert reset reliably during deep brownout conditions common in battery-powered systems before the µP loses functional integrity.
Can MAX6806SA46 be used with a 3.3V supply rail?
Yes, MAX6806SA46 operates with VCC from 1.0V to 5.5V, so it functions correctly on a 3.3V rail. However, its 4.6V reset threshold means it will assert reset whenever the 3.3V rail drops below 4.6V - which never occurs under normal operation. Therefore, MAX6806SA46 is intended for 5V systems; for 3.3V supervision, use MAX6806SA33 (if available) or a 3.3V-threshold variant like MAX6326.
What package type and pin count does MAX6806SA46 use, and are all pins electrically active?
MAX6806SA46 uses an 8-pin SO (Small Outline) package. Only three pins are electrically active: Pin 1 (RESET), Pin 4 (GND), and Pin 5 (VCC). Pins 2, 3, and 6–8 are no-connect (N.C.) and must remain unconnected in the PCB layout to avoid unintended coupling or EMI issues.
MAX6806SA46 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:
- 4.6V
- 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
MAX6806SA46 FAQ
1.How can I place an order for MAX6806SA46 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806SA46 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 MAX6806SA46 reliable?
The price and inventory of MAX6806SA46 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806SA46 is usually 5 days.
3.What payment methods are accepted for MAX6806SA46?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806SA46 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806SA46?
MAX6806SA46 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806SA46 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 MAX6806SA46?
For technical support, including MAX6806SA46 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806SA46 requirements.
6.How does Aetrix verify that MAX6806SA46 is sourced from the original manufacturer or authorized distributors?
All MAX6806SA46 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 MAX6806SA46 meets industry standards.
7.What is the process for return or replacement of MAX6806SA46?
All MAX6806SA46 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806SA46, 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 MAX6806SA46 part is unused and in its original packaging.
Return procedure for MAX6806SA46:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6806SA46 Tags
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MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
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APX803L20-29SA-7
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