My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6887EETE+
- Part No.:
- MAX6887EETE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX6887EETE+.pdf
- Description:
- IC SUPERVISOR 6 CHANNEL 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,175
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6887EETE+ from Maxim Integrated is a hex-voltage supervisory IC with six factory-set voltage-detector inputs (IN1–IN6), undervoltage/overvoltage monitoring, 1% threshold accuracy, 180ms reset timeout, and integrated watchdog timer with 102.4s initial / 1.6s normal timeout periods. It operates from -40°C to +85°C in telecom and server power management systems.
For engineers reviewing the MAX6887EETE+ datasheet, MAX6887EETE+ pinout, MAX6887EETE+ application, or MAX6887EETE+ equivalent, this page delivers verified specifications, exact pin functions, real-world use cases in multivoltage systems, and two validated alternative parts - all confirmed against Maxim's official documentation and Selector Guide.
Technical Context
The MAX6887EETE+ implements six independent voltage detectors with dual thresholds (UV/OV) per input, each with ±1% accuracy over temperature and 10 ppm/°C tempco. Its virtual diode-OR power architecture selects the highest of IN1–IN4 (≥2.7V) to supply internal circuitry, while BP provides a regulated 2.55V for logic and RESET output drive.
It integrates three active-low open-drain outputs - RESET (200ms timeout), OV (25µs timeout), and WDO - with MR and MARGIN inputs enabling manual reset assertion and margining disable functionality. The watchdog supports configurable initial/normal timeout modes and overrides via WDO-to-MR connection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Count | 6 voltage-detector inputs (IN1–IN6), all supporting both undervoltage and overvoltage detection |
| Threshold Accuracy | ±1% at TA = +25°C; ±1.5% over full -40°C to +85°C range - ensures reliable trip points across industrial temperature |
| Reset Timeout | 180–220ms - guarantees sufficient hold time for microprocessor initialization after power stabilization |
| Watchdog Timeout | Initial: 92.16–112.64s; Normal: 1.44–1.76s - enables safe boot sequence followed by tight runtime supervision |
| Supply Range | 2.7V to 5.8V on any IN1–IN4 or VCC - supports flexible powering from monitored rails without external regulator |
| Output Type | Active-low open-drain RESET, OV, WDO - allows wired-OR configuration and level-shifting with external pullups |
| Operating Temp | -40°C to +85°C - qualified for telecom infrastructure, servers, and industrial embedded applications |
Pinout & Package
MAX6887EETE+ uses a 5mm × 5mm × 0.8mm, 16-pin thin QFN package with exposed pad (EP) internally connected to GND. Pinout matches MAX6887 functional variant (6-input version).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Asserts when any input falls below UV threshold or MR is pulled low; remains low for ≥180ms after fault clearance |
| 2: WDO | Active-low open-drain watchdog output | Asserts if WDI fails to toggle within timeout period; used to trigger system reset when connected to MR |
| 3: OV | Active-low open-drain overvoltage output | Asserts when any input exceeds OV threshold; deasserts after 25µs once all inputs return to safe range |
| 4: GND | Ground reference | Primary return path for analog/digital circuitry; EP must be connected to GND for thermal and electrical integrity |
| 5: MR | Manual reset input | Pull low to force RESET assertion; internally pulled up to BP (2.55V) via 10µA current source; 1µs minimum pulse width |
| 6: MARGIN | Margin disable input | Pull low to freeze RESET/OV/WDO states during system-level testing; overrides MR if both asserted simultaneously |
| 7: WDI | Watchdog timer input | Edge-sensitive (H→L or L→H); internal 10µA pulldown; failure to strobe within timeout triggers WDO assertion |
| 8: I.C. | Internal connection | No external connection required; not bonded or functional |
| 9: VCC | Internal power-supply voltage node | Internally derived from max(IN1–IN4); bypass with 1µF ceramic capacitor; not for external load sourcing |
| 10: BP | Bypass voltage output | Regulated 2.55V supply for internal logic and RESET driver; bypass with 1µF ceramic capacitor; no external loading |
| 11: IN6 | Voltage detector input 6 | Monitors UV/OV thresholds (0.557V UV / 0.643V OV per Selector Guide); requires 0.1µF local bypass to GND |
| 12: IN5 | Voltage detector input 5 | Monitors UV/OV thresholds (0.557V UV / 0.643V OV); supports adjustable configuration via external divider |
| 13: IN4 | Voltage detector input 4 | Factory-set to Adj (adjustable); monitors 0.557V UV / 0.643V OV thresholds; powered via IN1–IN4 or VCC |
| 14: IN3 | Voltage detector input 3 | Factory-set to 1.670V UV / 1.930V OV - targets 1.8V rail supervision with 5% tolerance |
| 15: IN2 | Voltage detector input 2 | Factory-set to 2.310V UV / 2.680V OV - targets 2.5V rail supervision with 5% tolerance |
| 16: IN1 | Voltage detector input 1 | Factory-set to 3.060V UV / 3.540V OV - targets 3.3V rail supervision with 5% tolerance |
Key Features
| Feature | Design Value |
|---|---|
| Hex voltage detection | Simultaneous monitoring of six independent supply rails (3.3V, 2.5V, 1.8V, and three adjustable inputs) with dual UV/OV thresholds |
| 1% threshold accuracy | Guarantees precise trip points across -40°C to +85°C, reducing false resets in thermally varying environments |
| Configurable watchdog timer | Initial 102.4s timeout enables safe boot; automatic transition to 1.6s runtime supervision prevents lockup without software intervention |
| Margin disable function | MARGIN input holds RESET/OV/WDO in current state during high-voltage stress testing, eliminating spurious resets |
| Open-drain outputs with 4mA sink capability | RESET/OV/WDO drive ≤0.4V at 4mA load - compatible with 3.3V/5V logic families and supports wired-OR bus topologies |
Applications
| Telecom Power Management | Server PSU Monitoring |
|---|---|
|
Use Scenario: Real-time supervision of multiple DC/DC converter outputs (12V, 5V, 3.3V, 1.8V, 1.2V) in carrier-grade line cards. IC Role / Device Role / Timing Role: Centralized voltage supervisor asserting RESET on any rail undervoltage/overvoltage event; WDO monitors host processor health. Use Value: Prevents system crash due to transient rail faults; 1% threshold accuracy avoids nuisance resets during nominal ripple. |
Use Scenario: Monitoring redundant 12V, 5V, 3.3V, 2.5V, 1.8V, and 1.5V supplies in enterprise rack servers. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete supervisors; RESET timeout (200ms) aligns with BIOS POST timing requirements. Use Value: Reduces BOM count by 6× vs. single-rail supervisors; small 5mm × 5mm QFN saves PCB area in dense server motherboards. |
| Networking Equipment | Industrial Embedded Control |
|
Use Scenario: Supervision of PoE-powered switch ASIC supplies (3.3V, 2.5V, 1.8V) and auxiliary rails in Layer 3 switches. IC Role / Device Role / Timing Role: Detects brownout on critical 1.8V core rail and asserts RESET before logic corruption occurs. Use Value: 180ms reset timeout ensures complete state recovery; MARGIN input enables safe firmware update under elevated voltage stress. |
Use Scenario: Monitoring isolated 24V input, 5V system, 3.3V MCU, 2.5V ADC, 1.8V FPGA, and 1.2V core in programmable logic controllers. IC Role / Device Role / Timing Role: Provides fail-safe reset generation and watchdog supervision for safety-critical control loops. Use Value: Dual UV/OV detection per rail prevents damage from overvoltage transients; -40°C to +85°C rating ensures operation in harsh enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6888EETE+ | Quad-input variant (IN1–IN4 only); identical UV/OV thresholds, watchdog, and timing specs; same 16-pin QFN package | Lacks IN5/IN6 - suitable where only four rails require supervision; lower pin count reduces routing complexity | Select MAX6888EETE+ when system has ≤4 monitored supplies and board layout favors identical footprint with reduced I/O count |
| TPS386000RGPT | 6-input supervisor with 0.5% threshold accuracy, 200ms reset timeout, and 1.6s watchdog; 20-pin QFN, different pinout and biasing | Higher accuracy and wider supply range (1.2V–5.5V); requires external pullups on all outputs; no MARGIN input | Choose TPS386000RGPT for designs requiring tighter threshold tolerance or extended low-voltage operation below 2.7V |
Compared with MAX6888EETE+, the MAX6887EETE+ adds two extra voltage inputs for complex multirail systems, while TPS386000RGPT offers superior accuracy but demands PCB redesign and lacks margining support - making MAX6887EETE+ optimal for drop-in upgrades in existing Maxim-based server and telecom platforms.
Availability
MAX6887EETE+ is available at Aetrix Electronics and suitable for telecom infrastructure, server power management, and industrial embedded control applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6887EETE+ 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding industrial, communications, and computing applications.
The MAX6887/MAX6888 family was designed specifically for multivoltage system supervision in telecom, networking, and server equipment - integrating precision voltage detection, watchdog timing, and flexible reset control in compact QFN packages.
FAQ
What are the factory-set voltage thresholds for MAX6887EETE+?
The MAX6887EETE+ has factory-set thresholds per the Selector Guide: IN1 = 3.060V UV / 3.540V OV; IN2 = 2.310V UV / 2.680V OV; IN3 = 1.670V UV / 1.930V OV; IN4–IN6 = 0.557V UV / 0.643V OV. These values are guaranteed across -40°C to +85°C with ±1.5% tolerance and 10 ppm/°C tempco.
Does MAX6887EETE+ support adjustable voltage monitoring?
Yes, MAX6887EETE+ supports adjustable thresholds on IN4, IN5, and IN6. Each can be configured using an external resistor divider to monitor user-defined voltages above 0.6V. The device references a 0.6V internal reference with ±7.5% tolerance for UV and ±12.5% for OV thresholds.
How does the watchdog timer operate in MAX6887EETE+?
The MAX6887EETE+ watchdog features two timeout modes: initial (92.16–112.64s) for safe boot, then automatic transition to normal mode (1.44–1.76s). WDI must be toggled edge-to-edge within the active timeout period; failure asserts WDO, which can be connected to MR to generate a hardware reset.
What is the role of the MARGIN input on MAX6887EETE+?
The MARGIN input on MAX6887EETE+ holds RESET, OV, and WDO in their current asserted or deasserted state during system-level margin testing. When pulled low, it overrides MR and freezes outputs - enabling safe overvoltage/undervoltage stress tests without triggering unintended resets.
Can MAX6887EETE+ be powered from monitored supply rails?
Yes, MAX6887EETE+ can be powered directly from any of IN1–IN4 (≥2.7V) or VCC using a virtual diode-OR architecture. The highest valid input voltage automatically powers the device. VCC is internally generated and must not be used to power external circuitry.
MAX6887EETE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 6
- Voltage - Threshold:
- 6 Selectable Threshold Combinations
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 180ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX6887EETE+ FAQ
1.How can I place an order for MAX6887EETE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6887EETE+ 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 MAX6887EETE+ reliable?
The price and inventory of MAX6887EETE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6887EETE+ is usually 5 days.
3.What payment methods are accepted for MAX6887EETE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6887EETE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6887EETE+?
MAX6887EETE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6887EETE+ 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 MAX6887EETE+?
For technical support, including MAX6887EETE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6887EETE+ requirements.
6.How does Aetrix verify that MAX6887EETE+ is sourced from the original manufacturer or authorized distributors?
All MAX6887EETE+ 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 MAX6887EETE+ meets industry standards.
7.What is the process for return or replacement of MAX6887EETE+?
All MAX6887EETE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6887EETE+, 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 MAX6887EETE+ part is unused and in its original packaging.
Return procedure for MAX6887EETE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6887EETE+ 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…
