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Analog Devices Inc./Maxim Integrated MAX6807UA46
- Part No.:
- MAX6807UA46
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6807UA46.pdf
- Description:
- IC SUPERVISOR 1 CHAN 8UMAX/USOP
- Quantity:
- Payment:
- Shipping:
Inventory:12,143
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Product details
Overview
MAX6807UA46 from Maxim Integrated is an active-high, push-pull precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It asserts a logic-high RESET signal when VCC falls below its factory-trimmed 4.6V threshold (±2% accuracy), guarantees valid output down to VCC = 1.2V, draws only 35µA supply current, and operates across –40°C to +85°C - ideal for reliable reset supervision in battery-powered instrumentation and embedded controllers.
For engineers reviewing the MAX6807UA46 datasheet, MAX6807UA46 pinout, MAX6807UA46 application, or MAX6807UA46 equivalent, key selection considerations include its active-high push-pull output configuration, 4.6V reset threshold with 20mV hysteresis, SC70/SOT23/µMAX/SO package compatibility, and immunity to sub-100µs negative-going VCC transients.
Technical Context
The MAX6807UA46 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 active-high push-pull RESET output drives high with VOH ≥ 0.8×VCC at ISOURCE = 20µA (VCC = 1.2V) and sinks low with VOL ≤ 0.4V at ISINK = 3.2mA (VCC = 5.0V).
No manual reset (MR) input is present in the 8-pin µMAX package - MR is exclusive to the 4-pin SOT143 variant. The device requires no external components, supports VCC ranging from 1.2V to 5.5V, and delivers guaranteed reset assertion within 30µs of VCC falling through threshold at 1mV/µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.60V ±2% (VTH− at +25°C); ensures reset assertion before 5V system ICs drop below minimum operating voltage |
| Threshold Hysteresis | 0.02–0.03 × VTH−; prevents oscillation during slow-rising/falling VCC near 4.6V |
| Supply Current | 35µA typical at VCC = 3.6V; enables long battery life in portable equipment |
| RESET Output Type | Active-high, push-pull; eliminates need for external pull-up resistor and supports direct µP interface |
| VCC Operating Range | 1.2V to 5.5V (–40°C to +85°C); allows operation during brownout recovery and deep low-power states |
| Reset Delay | 30µs max (VCC falling at 1mV/µs); provides fast, deterministic response to supply faults |
| Tempco | 30ppm/°C; maintains threshold stability over full industrial temperature range |
Pinout & Package
MAX6807UA46 is housed in an 8-pin µMAX package (package code UA), pin-compatible with MC33064/MC33164 series. Pin assignments are identical across µMAX and SO variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output; drives high when VCC < 4.6V, low when VCC ≥ 4.6V + hysteresis |
| 2 | VCC | Positive supply input; powers internal comparator and output stage; absolute max = +6.0V |
| 3 | N.C. | No internal connection; must be left unconnected or tied to GND (no functional impact) |
| 4 | GND | Analog/digital ground reference; return path for supply current and output sink/source |
| 5–8 | N.C. | All four pins are not internally connected; no routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.6V threshold | Eliminates external resistor divider and calibration, reducing BOM count and layout area |
| Active-high push-pull output | Directly interfaces with µP reset inputs requiring high-active assertion without pull-up resistors |
| 35µA quiescent current | Enables use in always-on supervisory circuits for battery-backed systems with multi-year runtime |
| Immunity to VCC transients | Withstands negative-going spikes ≤100µs at 50mV overdrive, reducing need for input filtering |
| Guaranteed operation down to 1.2V VCC | Ensures valid reset signaling during deep brownout conditions where many µPs remain partially functional |
Applications
| Computers | Controllers |
|---|---|
Use Scenario: Monitoring 5V main supply in desktop motherboard power sequencing. IC Role / Device Role / Timing Role: Voltage detector asserting active-high RESET to halt CPU execution during undervoltage. Use Value: Prevents corrupted memory writes and processor lockup by guaranteeing reset before VCC drops below 4.508V (min threshold). | Use Scenario: Supervising power rails in programmable logic controllers (PLCs) deployed in factory automation. IC Role / Device Role / Timing Role: Standalone reset supervisor ensuring deterministic restart after AC line sags or switching noise. Use Value: 30µs delay and ±2% threshold accuracy enable compliance with IEC 61000-4-11 immunity requirements. |
| Intelligent Instruments | Critical µP and µC Power Monitoring |
Use Scenario: Battery-powered handheld multimeters with dual 3.3V/5V rail monitoring. IC Role / Device Role / Timing Role: Primary supervisor for main 5V rail, paired with lower-threshold detector for backup domain. Use Value: 35µA supply current extends single-AA battery life beyond 10 years in sleep mode. | Use Scenario: Reset management in medical infusion pump microcontrollers where firmware integrity is safety-critical. IC Role / Device Role / Timing Role: Independent hardware reset source decoupled from software watchdog timers. Use Value: Immunity to VCC transients prevents spurious resets during motor actuation noise events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6807SA46 | Same electrical specs and 4.6V active-high output, but in 8-pin SO package (larger footprint, higher thermal mass) | Preferred for through-hole prototyping or legacy board designs using SO-8 footprints | Select when SO-8 mechanical compatibility or hand-solderability is required over µMAX size constraints |
| TLV803SDBZR | 4.63V threshold (±1%), 350nA IQ, open-drain output, SOT23-3 package; lacks push-pull drive and MR support | Suitable for ultra-low-power applications where reset polarity and drive strength are secondary to current draw | Choose only if active-high push-pull is not required and supply current < 1µA is mandatory |
Compared with MAX6807SA46, the MAX6807UA46 offers identical functionality in a smaller µMAX package for space-constrained PCBs; compared with TLV803SDBZR, it provides stronger drive capability and deterministic active-high timing but consumes higher quiescent current.
Availability
MAX6807UA46 is available at Aetrix Electronics and suitable for computers, controllers, intelligent instruments, and critical µP/µC power monitoring requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX6807UA46 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 U.S.-based semiconductor company specializing in analog and mixed-signal ICs for power management, sensing, and interface applications.
The MAX6806/MAX6807/MAX6808 family was engineered specifically for precision power-supply monitoring in digital systems - delivering factory-trimmed thresholds, minimal external components, and robust transient immunity for reliable µP reset generation.
FAQ
What is the exact reset threshold voltage of MAX6807UA46 and how accurate is it?
The MAX6807UA46 has a nominal reset threshold of 4.60V, specified with ±2% accuracy over temperature (4.508V to 4.692V at +25°C). This tolerance ensures the device asserts RESET before downstream 5V ICs fall outside their guaranteed operating range, and the internal hysteresis prevents chatter during slow VCC transitions near threshold.
Does MAX6807UA46 support manual reset functionality?
No, MAX6807UA46 does not support manual reset. The MR (manual reset) input is only available on the 4-pin SOT143 package variants (e.g., MAX6807US46-T). The 8-pin µMAX package (UA) contains no MR pin - all pins 3 and 5–8 are N.C., and reset is triggered solely by VCC falling below the 4.6V threshold.
What is the minimum VCC required for MAX6807UA46 to guarantee valid RESET output?
MAX6807UA46 guarantees valid RESET output down to VCC = 1.2V. At VCC ≥ 1.2V, VOH ≥ 0.8×VCC (at ISOURCE = 20µA) and VOL ≤ 0.4V (at ISINK = 3.2mA). Below 1.2V, RESET behavior is not specified - the output may become indeterminate, so system-level brownout handling should occur above this limit.
Can MAX6807UA46 be used with a 3.3V microcontroller that expects an active-low reset signal?
No - MAX6807UA46 provides only an active-high push-pull RESET output. For active-low reset requirements, use MAX6806UA46 (active-low push-pull) or MAX6808UA46 (active-low open-drain). Interfacing MAX6807UA46 directly to an active-low µP reset pin would invert reset logic and cause malfunction unless an external inverter is added.
Is MAX6807UA46 pin-compatible with industry-standard supervisory ICs like the MC33064?
Yes - MAX6807UA46 in the 8-pin µMAX package is pin-compatible with MC33064, MC33164, MC34064, and MC34164. Pin 1 is RESET, Pin 2 is VCC, Pin 4 is GND, and Pins 3/5–8 are N.C., matching the functional pinout of those devices while offering improved accuracy (±2% vs. ±5%) and lower quiescent current (35µA vs. ~100µA).
MAX6807UA46 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
MAX6807UA46 FAQ
1.How can I place an order for MAX6807UA46 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6807UA46 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 MAX6807UA46 reliable?
The price and inventory of MAX6807UA46 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6807UA46 is usually 5 days.
3.What payment methods are accepted for MAX6807UA46?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6807UA46 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6807UA46?
MAX6807UA46 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6807UA46 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 MAX6807UA46?
For technical support, including MAX6807UA46 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6807UA46 requirements.
6.How does Aetrix verify that MAX6807UA46 is sourced from the original manufacturer or authorized distributors?
All MAX6807UA46 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 MAX6807UA46 meets industry standards.
7.What is the process for return or replacement of MAX6807UA46?
All MAX6807UA46 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6807UA46, 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 MAX6807UA46 part is unused and in its original packaging.
Return procedure for MAX6807UA46:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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