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Analog Devices Inc./Maxim Integrated MAX6827ZUT+T
- Part No.:
- MAX6827ZUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6827ZUT+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6827ZUT+T from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory IC in 6-pin SOT23 package, monitoring primary VCC (2.25V to 2.38V threshold) and secondary VCC2 (2.244V to 2.388V threshold), with push-pull active-high RESET output, manual reset input (MR), and 1.6s watchdog timeout - used in battery-powered embedded controllers for reliable power-up/brownout detection.
For engineers reviewing the MAX6827ZUT+T datasheet, MAX6827ZUT+T pinout, MAX6827ZUT+T application, or MAX6827ZUT+T equivalent, this page delivers verified electrical specs, exact pin functions, real-world use cases in multivoltage systems, and two validated alternative parts with documented functional differences.
Technical Context
The MAX6827ZUT+T integrates dual independent voltage monitors: one factory-trimmed for VCC2 at 2.244–2.388V over temperature, and one preprogrammed for VCC at 2.25–2.38V. It asserts an active-high push-pull RESET when either supply falls below its threshold, MR is pulled low, or WDI fails to toggle within 1.6s.
Its internal 140ms minimum reset timeout delay ensures stable µP initialization after recovery; RESET remains asserted during MR low condition and for full timeout after MR release. The device operates down to VCC = +1.2V over full –40°C to +125°C range and draws only 25µA max ICC at +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.25V (min) to 2.38V (max) at –40°C to +125°C - sets primary supply brownout detection point for 2.3V nominal rails |
| VCC2 Reset Threshold | 2.244V (min) to 2.388V (max) at –40°C to +125°C - factory-trimmed secondary monitor for I/O or core voltage tracking |
| RESET Output Type | Active-high push-pull - drives high without external pullup, compatible with µP reset inputs requiring active-high assertion |
| Reset Timeout Period | 140ms (min) to 320ms (max) - guarantees sufficient hold time for µP initialization after power recovery |
| Watchdog Timeout | 1.12s (min) to 2.60s (max) at –40°C to +125°C - provides fail-safe software execution monitoring with temperature-compensated timing |
| Supply Current (ICC) | 25µA (max) at –40°C to +125°C, VCC = +3.6V - enables multi-year operation in coin-cell–powered portable instruments |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive modules and industrial edge controllers |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant lead-free (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output - asserts high during fault conditions; sinks 100µA min at VCC ≥ 1.2V |
| 2 | GND | Ground reference - common return for all internal comparators and logic |
| 3 | MR | Manual-reset input, active-low with 50kΩ internal pullup - initiates reset when pulled to GND; 1µs minimum pulse width |
| 4 | WDI | Watchdog input - toggling within 1.6s prevents reset; unconnected disables watchdog via internal timer servicing |
| 5 | VCC2 | Secondary supply input - connects directly to monitored 2.24–2.39V rail; no external components required |
| 6 | VCC | Primary supply input - powers internal circuitry and sets VCC monitor threshold; valid down to +1.2V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks VCC (2.25–2.38V) and VCC2 (2.244–2.388V) with separate comparators - eliminates need for discrete supervisor + voltage reference |
| Guaranteed reset validity to VCC = +1.2V | Ensures correct RESET state during deep brownout - critical for fail-safe shutdown in battery-backed systems |
| Immunity to short negative VCC transients | Withstands ≤20µs glitches down to 100mV below threshold without spurious reset - reduces false triggers in noisy power environments |
| No external components required | Factory-trimmed thresholds and integrated pullup on MR eliminate resistors/capacitors - saves PCB area and BOM cost |
| 1.6s watchdog with glitch rejection | Clears on any WDI edge (50ns min pulse); rejects noise via 100ns MR/WDI glitch filter - robust against EMI-induced resets |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Coin-cell–powered handheld diagnostic tool operating across –20°C to +70°C with dual 2.3V I/O and 1.8V core rails. IC Role / Device Role: Primary supervisor asserting active-high RESET to ARM Cortex-M0 during cold-start and battery sag. Use Value: 25µA max ICC extends battery life beyond 5 years; 140ms reset timeout ensures bootloader execution before peripheral initialization. |
Use Scenario: Industrial PLC module with isolated 2.25V sensor interface and 3.3V communication processor. IC Role / Device Role: Dual-rail monitor detecting simultaneous drop in both supplies to prevent corrupted CAN frame transmission. Use Value: Factory-trimmed VCC2 threshold (2.244–2.388V) matches 2.25V rail tolerance; push-pull RESET drives µP reset pin without pullup resistor. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Portable gas analyzer using low-power ADC and 2.3V reference, powered by rechargeable Li-ion cell. IC Role / Device Role: Brownout detector triggering controlled shutdown when cell voltage drops below 2.25V during discharge. Use Value: Guaranteed operation down to VCC = +1.2V allows full reset assertion even during final battery depletion phase. |
Use Scenario: Medical infusion pump controller requiring fail-safe restart after power interruption or software hang. IC Role / Device Role: Watchdog-enforced reset generator - WDI toggled by safety-critical task scheduler to prevent runaway code execution. Use Value: 1.12–2.60s watchdog window accommodates worst-case interrupt latency while ensuring deterministic recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6827TUT+T | VCC threshold = 3.00–3.17V (vs. 2.25–2.38V); same VCC2, RESET type, and watchdog | Designed for 3.3V systems instead of 2.3V rails - not interchangeable without redesigning power sequencing | Select MAX6827TUT+T only if primary supply is 3.0–3.15V nominal; otherwise MAX6827ZUT+T is required for 2.25–2.38V compliance. |
| MAX6829ZUT+T | Open-drain RESET output (vs. push-pull); identical VCC/VCC2 thresholds and watchdog | Requires external pullup for active-high reset signaling - adds component count and affects rise time in high-capacitance buses | Choose MAX6829ZUT+T only when interfacing with bidirectional µP reset pins (e.g., Motorola 68HC11); MAX6827ZUT+T simplifies design with integrated drive. |
Compared with MAX6827TUT+T and MAX6829ZUT+T, the MAX6827ZUT+T uniquely supports 2.25–2.38V primary supply monitoring with active-high push-pull RESET - enabling direct connection to modern ultra-low-voltage µPs without level-shifting or external biasing.
Availability
MAX6827ZUT+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, and intelligent instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6827ZUT+T 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 power, sensing, and connectivity applications, with emphasis on reliability and integration.
The MAX6826–MAX6831 family delivers dual-supply supervision in ultra-small SOT23 packages for space-constrained, low-power systems where guaranteed reset behavior down to 1.2V is essential.
FAQ
What is the exact VCC reset threshold range for MAX6827ZUT+T over temperature?
The MAX6827ZUT+T has a VCC reset threshold of 2.25V (min) to 2.38V (max) across the full –40°C to +125°C operating range. This range is factory-programmed and specified in the Electrical Characteristics table under "VCC Reset Threshold" for suffix Z. The typical value is 2.32V at +25°C.
Does MAX6827ZUT+T support monitoring a secondary voltage lower than 2.24V?
No - the MAX6827ZUT+T uses the VCC2 pin for factory-trimmed secondary monitoring with a fixed range of 2.244V to 2.388V. To monitor voltages below 2.24V, select MAX6826/MAX6827/MAX6828 variants with RESET IN pin (e.g., MAX6827ZUT+T does not have RESET IN; it uses VCC2 only).
What is the RESET output configuration of MAX6827ZUT+T and how does it interface with µPs?
The MAX6827ZUT+T features an active-high push-pull RESET output. It drives high (VOH ≥ 0.8 × VCC) when not asserting reset and low (VOL ≤ 0.3V) when asserting reset. This eliminates need for external pullup and directly interfaces with µPs requiring active-high reset signals, such as many ARM Cortex-M series devices.
Can the watchdog timer on MAX6827ZUT+T be disabled, and how?
Yes - the watchdog timer on MAX6827ZUT+T is disabled by leaving the WDI pin unconnected or connecting it to a three-stated driver. When unconnected, internal circuitry services the timer every ~1.4s, preventing timeout. No configuration register or external signal is needed to disable it.
Is MAX6827ZUT+T compatible with 1.8V VCC operation?
No - the MAX6827ZUT+T is specified for VCC operation from +1.2V to +5.5V, but its preprogrammed VCC threshold (2.25–2.38V) requires VCC ≥ ~2.25V to function as intended. At 1.8V VCC, the device powers up but cannot assert reset for VCC brownout since the supply remains below threshold.
MAX6827ZUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.32V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6827ZUT+T FAQ
1.How can I place an order for MAX6827ZUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6827ZUT+T 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 MAX6827ZUT+T reliable?
The price and inventory of MAX6827ZUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6827ZUT+T is usually 5 days.
3.What payment methods are accepted for MAX6827ZUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6827ZUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6827ZUT+T?
MAX6827ZUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6827ZUT+T 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 MAX6827ZUT+T?
For technical support, including MAX6827ZUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6827ZUT+T requirements.
6.How does Aetrix verify that MAX6827ZUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6827ZUT+T 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 MAX6827ZUT+T meets industry standards.
7.What is the process for return or replacement of MAX6827ZUT+T?
All MAX6827ZUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6827ZUT+T, 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 MAX6827ZUT+T part is unused and in its original packaging.
Return procedure for MAX6827ZUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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