My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6756UKZD3
- Part No.:
- MAX6756UKZD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6756UKZD3.pdf
- Description:
- IC SUPERVISOR SGL VOLT WINDOW
- Quantity:
- Payment:
- Shipping:
Inventory:1,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6756UKZD3 from Maxim Integrated is a low-power, single-voltage window detector IC that monitors 2.5V system supplies for undervoltage and overvoltage conditions with ±15% factory-trimmed thresholds, 100ms minimum reset timeout, and active-low open-drain RESET output. It features manual reset input, operates from 1.0V to 6.0V supply, consumes only 13µA typical current, and is rated for -40°C to +125°C industrial/automotive environments.
For engineers reviewing the MAX6756UKZD3 datasheet, MAX6756UKZD3 pinout, MAX6756UKZD3 application, or MAX6756UKZD3 equivalent, key selection considerations include its SOT23-5 package, fixed 2.5V nominal monitoring point (Z suffix), ±15% window set via SET pin biasing, 100ms D3 timeout option, and compatibility with microprocessor power-rail supervision in space-constrained embedded systems.
Technical Context
The MAX6756UKZD3 implements dual internal comparators referenced to a precision bandgap, comparing VCC against UVTH = 2.125V (−15%) and OVTH = 2.875V (+15%) at 25°C. Its SET pin accepts three bias states-GND (±5%), VCC (±10%), or VCC/2 (±15%)-to configure hysteresis without external components.
It integrates a 100ms minimum timeout monostable circuit triggered on UV/OV assertion, with propagation delay of 20µs (typ) and guaranteed correct output state down to VCC = 1.0V. The open-drain RESET output supports wired-OR configurations and level-shifting across voltage domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal VCC Threshold | 2.5V (Z suffix); enables direct supervision of 2.5V logic rails and I/O supplies |
| Window Tolerance | ±15% (SET biased to VCC/2); provides robust immunity to supply ripple and noise |
| Reset Timeout | 100ms min (D3 suffix); ensures stable processor boot after brownout recovery |
| Supply Current | 13µA typ at 3.6V; supports always-on monitoring in battery-powered systems |
| Operating Temp | −40°C to +125°C; qualified for under-hood automotive and industrial control applications |
| Output Type | Active-low open-drain RESET; allows flexible pull-up voltage selection and bus sharing |
| Manual Reset | MR input with 26kΩ internal pullup; enables hardware-initiated system reset independent of supply state |
Pinout & Package
MAX6756UKZD3 is housed in a 5-pin SOT23-5 package with exposed pad (not electrically connected), optimized for high-density PCB layouts and thermal performance in compact power management subsystems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power Input & Monitored Voltage | Powers device and serves as primary monitored rail; outputs remain valid down to 1.0V |
| GND | Ground Reference | Common return path for internal comparators, reference, and output drivers |
| MR | Active-Low Manual Reset Input | Asserts RESET when pulled low; internally pulled up to VCC (26kΩ) |
| RESET | Open-Drain Output | Active-low reset signal; requires external pullup; asserts during UV/OV fault or MR activation |
| SET | Window Select Input | Bias to VCC/2 for ±15% window; no external resistors needed |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed 2.5V Threshold | Eliminates external resistor networks and calibration effort for 2.5V rail monitoring |
| Configurable ±15% Window | Enables tighter fault detection margins than standard ±5% options without design change |
| 100ms Minimum Timeout | Prevents premature processor release during slow supply ramp-up or recovery transients |
| 1.0V Valid Output Operation | Guarantees correct RESET state even during deep brownout, improving system reliability |
| 20µs Propagation Delay | Delivers fast fault response for real-time protection of sensitive digital loads |
Applications
| Microprocessor Power Supervision | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring 2.5V core supply of ARM Cortex-M7 MCU in an automotive ADAS domain controller. IC Role / Device Role / Timing Role: Window detector asserting open-drain RESET to hold processor in reset until 2.5V rail stabilizes within ±15% tolerance post-power-on or after transient dip. Use Value: Prevents illegal instruction execution during unstable voltage by enforcing 100ms minimum reset hold time and validating operation down to 1.0V VCC. | Use Scenario: Supervising 2.5V analog front-end supply in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Single-point voltage monitor triggering system-level fault flag and disabling I/O drivers upon undervoltage or overvoltage event. Use Value: Enables fail-safe shutdown before ADC/DAC corruption occurs, leveraging ±15% window to accommodate aging-related supply drift. |
| Telecom Line Card Power | Medical Sensor Hub |
Use Scenario: Ensuring clean startup of 2.5V SerDes PHY on a 40Gbps optical line card operating in extended temperature range. IC Role / Device Role / Timing Role: Open-drain RESET output tied to FPGA configuration reset pin, asserted until 2.5V rail meets ±15% window with 100ms debounce. Use Value: Avoids partial configuration and metastability by guaranteeing full rail stability before FPGA initialization begins. | Use Scenario: Supervising isolated 2.5V sensor bias supply in a portable ECG monitor with strict battery life requirements. IC Role / Device Role / Timing Role: Ultra-low-current (13µA) window detector enabling continuous power-rail vigilance during sleep mode. Use Value: Extends battery runtime while maintaining safety-critical voltage integrity verification for analog signal chain accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6755UKZD3 | Same 2.5V threshold and ±15% window, but features active-high push-pull RESET output instead of open-drain | Requires direct connection to processor reset pin without external pullup; incompatible with wired-OR reset buses | Select when system reset logic expects active-high assertion and no shared reset bus exists |
| TLV809K25DBZR | Fixed 2.5V undervoltage detector only (no overvoltage detection); 3.5% threshold accuracy vs. ±15% window; no SET pin or manual reset | Provides basic brownout protection only; cannot detect overvoltage faults or support user-initiated reset | Select only if overvoltage monitoring and MR functionality are not required and tighter UV threshold tolerance is preferred |
Compared with MAX6755UKZD3 and TLV809K25DBZR, the MAX6756UKZD3 uniquely delivers combined UV/OV window detection with configurable hysteresis, manual reset capability, and open-drain flexibility-making it the only choice for systems requiring comprehensive 2.5V rail integrity assurance with interface adaptability.
Availability
MAX6756UKZD3 is available at Aetrix Electronics and suitable for microprocessor supervision, industrial PLC I/O modules, telecom line cards, and medical sensor hubs requiring stable component supply across automotive and extended-temperature industrial programs.
Supply support for MAX6756UKZD3 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 management, sensing, and interface applications in demanding environments.
The MAX6754–MAX6764 family was engineered specifically for reliable, low-power voltage supervision in space-constrained embedded systems where simultaneous undervoltage and overvoltage detection is critical to system safety and data integrity.
FAQ
What is the exact undervoltage and overvoltage threshold for MAX6756UKZD3 at 25°C?
The MAX6756UKZD3 has a nominal 2.5V VCC threshold with ±15% window: UVTH = 2.125V (−15%) and OVTH = 2.875V (+15%) at 25°C. These values are factory-trimmed and specified over −40°C to +125°C with ±0.7% hysteresis. The Z suffix confirms 2.5V nominal, and D3 indicates 100ms minimum timeout.
How is the ±15% window configured on MAX6756UKZD3?
The ±15% window on MAX6756UKZD3 is set by biasing the SET pin to VCC/2 using a resistor divider. Connecting SET directly to GND selects ±5%, to VCC selects ±10%, and to VCC/2 selects ±15%. No external capacitors or trimming components are required-the internal reference handles all calibration.
Does MAX6756UKZD3 support operation below 1.4V VCC?
Yes-MAX6756UKZD3 guarantees correct RESET output logic state for VCC ≥ 1.0V, though voltage monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2. This allows safe reset assertion during deep brownout conditions where VCC drops below 1.4V but remains above 1.0V.
What is the function of the MR pin on MAX6756UKZD3?
The MR pin on MAX6756UKZD3 is an active-low manual reset input with internal 26kΩ pullup to VCC. Driving MR low asserts the open-drain RESET output immediately. After MR returns high, RESET remains asserted for the full 100ms timeout period (D3 option), ensuring deterministic system reset timing independent of supply behavior.
Can MAX6756UKZD3 be used in automotive applications?
Yes-MAX6756UKZD3 is specified for −40°C to +125°C operation and offered in lead-free SOT23-5 packaging. While not AEC-Q200 certified out-of-box, its extended temperature rating, 100ms timeout, and 1.0V operational floor make it suitable for non-safety-critical automotive subsystems such as infotainment power supervision and body control module auxiliary rails.
MAX6756UKZD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6756UKZD3 FAQ
1.How can I place an order for MAX6756UKZD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6756UKZD3 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 MAX6756UKZD3 reliable?
The price and inventory of MAX6756UKZD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6756UKZD3 is usually 5 days.
3.What payment methods are accepted for MAX6756UKZD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6756UKZD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6756UKZD3?
MAX6756UKZD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6756UKZD3 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 MAX6756UKZD3?
For technical support, including MAX6756UKZD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6756UKZD3 requirements.
6.How does Aetrix verify that MAX6756UKZD3 is sourced from the original manufacturer or authorized distributors?
All MAX6756UKZD3 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 MAX6756UKZD3 meets industry standards.
7.What is the process for return or replacement of MAX6756UKZD3?
All MAX6756UKZD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6756UKZD3, 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 MAX6756UKZD3 part is unused and in its original packaging.
Return procedure for MAX6756UKZD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6756UKZD3 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…
