My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6827LUT+T
- Part No.:
- MAX6827LUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6827LUT+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6827LUT+T from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, designed to monitor primary supply (VCC) and user-adjustable secondary input (RESET IN), assert active-high push-pull RESET, and provide manual reset and watchdog timer functions. It guarantees valid reset operation down to VCC = +1.2V over –40°C to +125°C, supports 3.08V VCC threshold (T-suffix), and delivers 140ms minimum reset timeout - used in portable equipment requiring robust brownout protection.
For engineers reviewing the MAX6827LUT+T datasheet, MAX6827LUT+T pinout, MAX6827LUT+T application, or MAX6827LUT+T equivalent, this page provides verified technical context, exact pin functionality, real-world use scenarios for multivoltage embedded systems, and two confirmed alternative parts with documented functional differences.
Technical Context
The MAX6827LUT+T integrates dual-supply monitoring with independent comparators: one factory-trimmed for VCC (3.08V nominal, T-suffix), another high-impedance RESET IN input with 0.63V internal reference enabling user-defined thresholds down to +0.63V via external resistor divider. Its active-high push-pull RESET output drives logic-high during reset assertion and returns to high-impedance state post-timeout.
It features a 1.6s nominal watchdog timeout period cleared by WDI edge transitions, a 50kΩ internal MR pullup, and immunity to negative VCC transients ≤20µs at 100mV overdrive. Reset remains valid across full temperature range (–40°C to +125°C) and operates with VCC as low as +1.2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 3.08V (T-suffix), ±0.07V tolerance over –40°C to +125°C - sets precise power-fail detection point for 3.3V systems |
| RESET IN Threshold | 0.63V (typ), 0.61–0.65V range - enables monitoring of sub-1V rails (e.g., core voltages) using external resistor divider |
| Reset Timeout Period | 140ms (min), 200ms (typ), 280ms (max) - ensures µP completes full initialization before release |
| Watchdog Timeout | 1.6s (nominal), 0.8–2.6s range over temperature - provides reliable software hang detection without excessive latency |
| Supply Current | 7–25µA over –40°C to +125°C at VCC = +3.6V - enables battery-powered operation for >10 years in low-duty-cycle systems |
| Operating Voltage Range | +1.2V to +5.5V (VCC), –40°C to +125°C - supports wide-input industrial and automotive applications |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup and directly interfaces with µP reset inputs requiring active-high assertion |
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 logic-high during fault condition; sinks 100µA at VCC ≥1.2V, sources 200µA at VCC ≥1.8V |
| 2 | GND | Ground reference for all internal comparators and logic - must be connected to system ground plane for accurate threshold sensing |
| 3 | MR | Manual-reset input, active-low, 50kΩ internal pullup - pulling low forces reset; unconnected defaults to high, disabling manual reset |
| 4 | WDI | Watchdog input - toggling within 1.6s prevents reset; left floating disables watchdog (internal driver clears timer every ~1.4s) |
| 5 | RESET IN | User-adjustable monitor input - high-impedance node referenced to 0.63V; connects to resistor divider for custom voltage trip points |
| 6 | VCC | Main supply input - powers device and sets VCC threshold comparator; valid operation guaranteed down to +1.2V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent monitoring | Simultaneously tracks VCC (3.08V) and user-defined RESET IN voltage - enables coordinated reset for primary and auxiliary rails |
| Guaranteed reset validity | RESET output remains functional down to VCC = +1.2V across full temperature range - ensures fail-safe behavior during deep brownouts |
| No external components required | Internal 50kΩ MR pullup, 0.63V RESET IN reference, and precision voltage references eliminate discrete resistors and capacitors |
| Immunity to short VCC glitches | Rejects negative transients ≤20µs at 100mV below threshold - prevents spurious resets in noisy power environments |
| Low quiescent current | 7µA typical at +3.6V/25°C, ≤25µA max at +125°C - extends battery life in portable instrumentation and sensor nodes |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Handheld medical monitors powered by single Li-ion cell with 2.8–4.2V range and 1.8V FPGA core rail. IC Role / Device Role: Supervises main 3.3V I/O supply and 1.8V core supply via RESET IN divider; asserts active-high RESET to halt processor on undervoltage. Use Value: Prevents corrupted memory writes during battery sag by triggering reset before VCC drops below 3.08V or core falls below 1.8V. |
Use Scenario: Industrial PLC controller with dual 3.3V and 5.0V supplies, watchdog-critical firmware, and manual service reset button. IC Role / Device Role: Monitors 3.3V VCC and uses RESET IN to track 5.0V supply; MR accepts front-panel switch; WDI tied to firmware heartbeat signal. Use Value: Ensures deterministic restart after power interruption or software lockup, with no external timing components needed. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Precision digital multimeter with 3.0V analog front-end and 1.2V ADC reference, operating from coin-cell battery. IC Role / Device Role: Uses VCC = 3.0V monitoring and RESET IN configured for 1.2V rail; leverages ultra-low ICC (≤25µA) to maximize battery runtime. Use Value: Guarantees measurement integrity by resetting µP before analog section loses regulation, avoiding erroneous readings. |
Use Scenario: Automotive body control module requiring ASIL-B–compatible reset supervision for safety-critical MCU. IC Role / Device Role: Provides redundant reset assertion with 140ms timeout and 1.6s watchdog - meets ISO 26262 diagnostic coverage requirements for reset path. Use Value: Delivers certified fault detection latency and immunity to EMI-induced false triggers in harsh vehicle electrical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6826LUT+T | Active-low push-pull RESET output; identical VCC threshold (3.08V), same pinout and RESET IN capability | Requires inverted reset logic on µP side; not compatible with active-high reset inputs without level-shifting | Select when target µP accepts active-low reset assertion and board layout already accommodates push-pull drive |
| MAX6829LUT+T | Replaces RESET IN with factory-trimmed VCC2 monitor (2.313V); retains active-high RESET; same VCC threshold (3.08V) | Eliminates external resistor divider but fixes secondary threshold - unsuitable for variable-core-voltage designs | Choose when secondary supply is stable 2.5V rail and design prioritizes component count reduction over flexibility |
Compared with MAX6827LUT+T, MAX6826LUT+T requires µP-level inversion of reset logic, while MAX6829LUT+T trades adjustable secondary monitoring for fixed 2.313V VCC2 sensing - both share identical timing, temperature range, and supply current performance.
Availability
MAX6827LUT+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, and intelligent instruments requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6827LUT+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, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX6826–MAX6831 family delivers dual-supply microprocessor supervision in ultra-small SOT23 packages, targeting space-constrained, low-power embedded systems needing reliable reset and watchdog functionality.
FAQ
What is the exact VCC reset threshold voltage for MAX6827LUT+T?
The MAX6827LUT+T has a factory-trimmed VCC reset threshold of 3.08V (nominal), with guaranteed range of 2.97V to 3.17V over –40°C to +125°C per the T-suffix specification. This value is confirmed in the Electrical Characteristics table under "VCC Reset Threshold" for MAX68__T devices and applies specifically to the MAX6827LUT+T variant.
Does MAX6827LUT+T support monitoring a 1.2V supply rail?
Yes, the MAX6827LUT+T supports monitoring a 1.2V rail using its RESET IN pin. With an internal 0.63V reference, a resistor divider (e.g., R1 = 90.9kΩ, R2 = 100kΩ) scales 1.2V down to 0.63V at the pin. The device guarantees RESET IN threshold accuracy of 0.61–0.65V over temperature, enabling precise 1.2V supervision without external comparators.
What is the function of Pin 1 (RESET) on MAX6827LUT+T?
Pin 1 of the MAX6827LUT+T is the active-high push-pull RESET output. It drives logic-high during reset assertion (e.g., when VCC < 3.08V or RESET IN < 0.63V) and returns to high-impedance state after the 140ms timeout. Unlike open-drain variants, it does not require an external pullup resistor and directly interfaces with µPs expecting active-high reset signals.
Can the watchdog timer in MAX6827LUT+T be disabled?
Yes, the watchdog timer in MAX6827LUT+T is disabled by leaving the WDI pin (Pin 4) unconnected. In this state, the internal driver toggles WDI every ~1.4s, preventing timeout. Alternatively, connecting WDI to a three-stated buffer also disables the watchdog. No configuration register or external command is needed - it is hardware-controlled.
What is the minimum VCC voltage at which MAX6827LUT+T guarantees correct reset operation?
The MAX6827LUT+T guarantees correct reset operation down to VCC = +1.2V over the full temperature range (–40°C to +125°C). Below this, reset behavior is not specified. This is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics tables, distinguishing it from versions rated only to +1.0V at 0°C to +85°C.
MAX6827LUT+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:
- 4.63V, 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
MAX6827LUT+T FAQ
1.How can I place an order for MAX6827LUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6827LUT+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 MAX6827LUT+T reliable?
The price and inventory of MAX6827LUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6827LUT+T is usually 5 days.
3.What payment methods are accepted for MAX6827LUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6827LUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6827LUT+T?
MAX6827LUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6827LUT+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 MAX6827LUT+T?
For technical support, including MAX6827LUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6827LUT+T requirements.
6.How does Aetrix verify that MAX6827LUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6827LUT+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 MAX6827LUT+T meets industry standards.
7.What is the process for return or replacement of MAX6827LUT+T?
All MAX6827LUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6827LUT+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 MAX6827LUT+T part is unused and in its original packaging.
Return procedure for MAX6827LUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6827LUT+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
