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Analog Devices Inc./Maxim Integrated MAX6807US26
- Part No.:
- MAX6807US26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6807US26.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,037
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Product details
Overview
MAX6807US26 from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It features a factory-preset 2.6V ±2% reset threshold, active-high push-pull RESET output, and guaranteed operation down to VCC = 1.2V - enabling reliable brownout detection in battery-powered instrumentation and portable controllers.
For engineers reviewing the MAX6807US26 datasheet, MAX6807US26 pinout, MAX6807US26 application, or MAX6807US26 equivalent, this device serves as a low-quiescent-current (35µA), hysteresis-equipped supervisory circuit for critical µP power sequencing, embedded controller reset assertion, and portable equipment supply integrity verification.
Technical Context
The MAX6807US26 implements a precision bandgap-based voltage reference with internal hysteresis (VHYST = 0.02–0.03 × VTH−) to prevent output chatter near the 2.6V threshold. Its active-high push-pull RESET output drives logic-high when VCC ≥ 2.6V and asserts logic-low during undervoltage conditions.
It operates across −40°C to +85°C, supports VCC from 1.2V to 5.5V, and includes no external components - relying on internal 80kΩ MR pulldown (SOT143 package only) and fixed threshold accuracy without trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.60V ±2% (VCC falling); ensures reset assertion before system ICs drop below minimum operating voltage |
| Supply Current | 35µA typical at VCC = 3.6V; enables multi-year battery life in portable equipment |
| VCC Operating Range | 1.2V to 5.5V; supports operation through deep brownout and full 3.3V/5V rail monitoring |
| RESET Output Type | Active-high push-pull; eliminates need for external pullup and directly interfaces CMOS inputs |
| Hysteresis | 0.02–0.03 × VTH−; prevents oscillation during slow-rising/falling supply transitions |
| Power-Up Delay | 30µs typical; provides clean, glitch-free reset assertion after VCC stabilization |
| Tempco | 30ppm/°C; maintains threshold stability over industrial temperature range |
Pinout & Package
The MAX6807US26 is packaged in a 4-pin SOT143 surface-mount package with exposed pad (land pattern 90-0183). Pin 1 is RESET (active-high push-pull), Pin 2 is GND, Pin 3 is VCC, and Pin 4 is MR (manual reset input, internally pulled down by 80kΩ).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; asserts logic high when VCC ≥ 2.6V, low otherwise |
| 2 | GND | Ground reference for internal comparator and output stage |
| 3 | VCC | Supply input; powers internal circuitry and defines reset threshold reference |
| 4 | MR | Active-high manual reset input; overrides automatic reset when driven high |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.6V threshold | ±2% accuracy over −40°C to +85°C ensures compliance with 2.5V ±10% system supply specs |
| Active-high push-pull output | Directly drives CMOS inputs without external pullup; reduces BOM count and layout area |
| Manual reset input (MR) | Integrated 80kΩ pulldown allows momentary switch interface without external resistor |
| Low 35µA supply current | Enables use in always-on battery-backed systems with minimal standby drain |
| Immunity to VCC transients | Rejects negative-going transients ≤100µs (at 100mV overdrive), improving noise robustness |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
Use Scenario: Power monitoring in handheld barcode scanners and wireless data loggers with single-cell Li-ion or alkaline supplies. IC Role / Device Role / Timing Role: Voltage supervisor asserting reset during battery sag or cold-temperature discharge. Use Value: Prevents firmware corruption by ensuring µP remains held in reset until VCC stabilizes above 2.6V. | Use Scenario: Supply integrity check in portable multimeters and environmental sensors with dual 3.3V/5V rails. IC Role / Device Role / Timing Role: Primary reset generator for ARM Cortex-M0+ controller during power-up and brownout. Use Value: Guarantees valid reset signal down to VCC = 1.2V, supporting graceful shutdown before deep undervoltage lockout. |
| Computers | Critical µP and µC Power Monitoring |
Use Scenario: Standby power supervision in embedded PC/104 modules with ATX-derived 3.3V standby rail. IC Role / Device Role / Timing Role: Secondary supervisor verifying auxiliary supply health before main CPU initialization. Use Value: 30µs power-up delay ensures stable VCC before releasing reset, eliminating boot glitches. | Use Scenario: Reset coordination in industrial PLC I/O modules where µC must not execute code below safe voltage. IC Role / Device Role / Timing Role: Precision undervoltage detector triggering hardware reset independent of software watchdog. Use Value: ±2% threshold tolerance matches 2.5V system spec limits, avoiding false resets during nominal ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6806US26 | Active-low push-pull RESET output; identical threshold, hysteresis, and supply current | Requires inverted logic handling in µP reset input; unsuitable for direct replacement where active-high is mandated | Select when target µP accepts active-low reset and board-level inversion is unavailable |
| TPS3808G26DBVR | 2.63V threshold (±0.5%), 1.8–6.0V VCC range, 1.6µA quiescent current, no MR pin | Lacks manual reset; optimized for ultra-low-power applications but requires external RC for delay tuning | Choose for battery-critical designs needing sub-2µA standby; avoid if MR functionality is required |
Compared with MAX6806US26 and TPS3808G26DBVR, the MAX6807US26 uniquely combines active-high push-pull output, integrated MR input, and industrial-grade ±2% threshold accuracy - making it optimal for portable controllers requiring both manual intervention and deterministic reset polarity.
Availability
MAX6807US26 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, computers, and critical µP and µC power monitoring requiring stable component supply and long-term industrial availability.
Supply support for MAX6807US26 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, computing, and communications applications - emphasizing reliability, integration, and performance in harsh environments.
The MAX6806/MAX6807/MAX6808 family delivers cost-effective, zero-adjustment voltage supervision for microprocessor systems - targeting applications where supply integrity must be verified without external components or calibration.
FAQ
What is the reset threshold voltage of the MAX6807US26?
The MAX6807US26 has a factory-preset reset threshold of 2.60V ±2% (i.e., 2.548V to 2.652V at +25°C), specified for VCC falling conditions. This threshold is laser-trimmed during production and remains stable across −40°C to +85°C with a tempco of 30ppm/°C. The MAX6807US26 uses this precise point to assert its active-high RESET output when VCC drops below the threshold.
Does the MAX6807US26 support manual reset functionality?
Yes, the MAX6807US26 supports manual reset via Pin 4 (MR), which is an active-high input with an internal 80kΩ pulldown resistor. Driving MR high forces RESET low regardless of VCC level, enabling operator-initiated or test-system-triggered resets. This feature is exclusive to the SOT143 package variant - the MAX6807US26 - and is not present in SC70 or SOT23 versions of the MAX6807.
What is the minimum VCC required for guaranteed RESET output operation in the MAX6807US26?
The MAX6807US26 guarantees correct RESET output behavior down to VCC = 1.2V. Below this voltage, RESET may become indeterminate. This specification ensures reliable reset assertion during gradual brownout conditions common in battery-powered systems. The MAX6807US26 achieves this via optimized internal biasing and push-pull output stage design - distinct from the MAX6806/MAX6808, which guarantee down to 1.0V.
How does the MAX6807US26 handle power-supply transients?
The MAX6807US26 is immune to short-duration negative-going VCC transients up to 100µs (at 100mV overdrive), as characterized in Figure 3 of its datasheet. This immunity stems from internal filtering and comparator hysteresis, preventing spurious resets during switching noise or load-dump events. For enhanced robustness, a 0.1µF ceramic capacitor placed close to the VCC pin is recommended - a practice validated in the MAX6807US26's application notes.
What packages are available for the MAX6807US26?
MAX6807US26 is exclusively offered in the 4-pin SOT143 package (package code U4-1, land pattern 90-0183), which includes the MR input pin. Unlike other MAX6807 variants (e.g., MAX6807UR26-T in SOT23 or MAX6807UA26 in µMAX), the "US" suffix denotes the SOT143 configuration. This package supports tape-and-reel delivery with a minimum order quantity of 2500 units and features RoHS-compliant lead finish.
MAX6807US26 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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 High
- Reset Timeout:
- 30µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX6807US26 FAQ
1.How can I place an order for MAX6807US26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6807US26 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 MAX6807US26 reliable?
The price and inventory of MAX6807US26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6807US26 is usually 5 days.
3.What payment methods are accepted for MAX6807US26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6807US26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6807US26?
MAX6807US26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6807US26 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 MAX6807US26?
For technical support, including MAX6807US26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6807US26 requirements.
6.How does Aetrix verify that MAX6807US26 is sourced from the original manufacturer or authorized distributors?
All MAX6807US26 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 MAX6807US26 meets industry standards.
7.What is the process for return or replacement of MAX6807US26?
All MAX6807US26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6807US26, 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 MAX6807US26 part is unused and in its original packaging.
Return procedure for MAX6807US26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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