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Analog Devices Inc./Maxim Integrated MAX6755UKLD3+T
- Part No.:
- MAX6755UKLD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6755UKLD3+T.pdf
- Description:
- IC DETECT VOLT WINDOW SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
The MAX6755UKLD3+T from Analog Devices is a low-power, single-supply window voltage detector with factory-trimmed 3.3V nominal monitoring, ±10% adjustable window (SET = VCC), 100ms minimum reset timeout (D3 suffix), active-high push-pull RESET output, and manual reset input. It monitors system power rails in telecom and server applications where precise undervoltage/overvoltage detection with latch-free reset recovery is required.
For engineers reviewing the MAX6755UKLD3+T datasheet, MAX6755UKLD3+T pinout, MAX6755UKLD3+T application, or MAX6755UKLD3+T equivalent, this page delivers verified electrical specs, SOT23-5 package layout, real-world use cases in DC-DC converter supervision and microprocessor reset management, and two validated alternative parts with documented functional trade-offs.
Technical Context
The MAX6755UKLD3+T implements a dual-threshold comparator architecture with an internal precision reference, enabling simultaneous detection of VCC falling below UVTH (2.970–3.135V) and rising above OVTH (3.630–3.795V) at TA = –40°C to +125°C. Its SET pin configures hysteresis to ±10%, and MR asserts RESET for ≥4µs pulse width with 300ns propagation delay.
It operates from VCC = 1.0V to 6.0V with supply current as low as 13µA at 3.6V, supports outputs valid down to VCC = 1.0V, and features transient immunity up to 300ns - critical for noisy DC-DC converter feedback paths and automotive-grade power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal VCC | 3.3V fixed threshold - matches common I/O rail voltage for direct integration without external dividers. |
| Window Tolerance | ±10% (SET = VCC) - provides 0.33V hysteresis margin to reject noise-induced false triggers on 3.3V supplies. |
| Reset Timeout | 100ms min (D3 suffix) - ensures stable processor boot after brownout recovery before releasing reset signal. |
| Supply Current | 13µA typ at 3.6V - enables always-on monitoring in battery-backed or ultra-low-power systems. |
| Operating Temp | –40°C to +125°C - qualified for industrial and automotive under-hood environments without derating. |
| Output Type | Active-high push-pull RESET - drives microcontroller reset pins directly without external pull-up resistor. |
| MR Input | Active-low with 26kΩ internal pull-up - simplifies board-level reset button design with no external components needed. |
Pinout & Package
MAX6755UKLD3+T is housed in a 5-pin SOT23-5 package (package code U5+1), with exposed pad not present. Thermal resistance θJA = 255.9°C/W on multilayer PCB, supporting reliable operation at full temperature range without heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power input & monitored voltage | Supplies device and serves as primary detection node; requires 0.1µF bypass capacitor to GND. |
| 2 - GND | Ground reference | Common return for all internal comparators and output drivers; must be low-impedance path. |
| 3 - MR | Manual reset input | Active-low control: pulling below 0.23×VCC asserts RESET; internal 26kΩ pull-up eliminates external resistor. |
| 4 - RESET | Reset output | Active-high push-pull: drives high to release µP reset when VCC is within window; sinks 100µA max at VOL ≤ 0.3V. |
| 5 - SET | Window select input | Configures hysteresis: tied to VCC for ±10% window; open or floating invalid; no external bias needed. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.3V thresholds | Eliminates external resistor networks for I/O rail monitoring, reducing BOM count and layout area. |
| 100ms minimum reset timeout | Guarantees sufficient hold time for FPGA/ASIC configuration and memory initialization after power recovery. |
| Active-high push-pull RESET | Directly interfaces with ARM Cortex-M, Intel Atom, and Xilinx Zynq reset inputs without level-shifting or pull-up. |
| Low 13µA supply current | Enables permanent connection to backup battery rails (e.g., coin cell) for tamper-proof power-fail logging. |
| –40°C to +125°C operation | Validated across full industrial temperature range without performance degradation or calibration drift. |
Applications
| Telecom Power Supervision | Server CPU Core Monitoring |
|---|---|
Use Scenario: Monitors 3.3V auxiliary power rail in 5G base station RF front-end modules during hot-swap insertion. IC Role / Device Role / Timing Role: Window detector asserting RESET high only when VCC remains within 2.97–3.795V for ≥100ms post-recovery. Use Value: Prevents RF IC latch-up by ensuring clean power-up sequence before enabling PA bias control logic. | Use Scenario: Supervises 3.3V I/O voltage for Intel Xeon Scalable processors in rack-mounted servers. IC Role / Device Role / Timing Role: Generates synchronized reset pulse to CPU's RST# pin upon any VCC excursion outside ±10% window. Use Value: Eliminates need for discrete RC reset circuit, improving timing accuracy and reducing failure-in-time (FIT) rate. |
| Industrial DC-DC Converter Module | Automotive ADAS Camera ECU |
Use Scenario: Embedded in isolated 3.3V output stage of 24V-to-3.3V flyback converter for PLC I/O modules. IC Role / Device Role / Timing Role: Detects overvoltage transients induced by load dump or ESD events on secondary side. Use Value: Triggers immediate shutdown via RESET-driven gate driver disable, protecting downstream FPGAs from overvoltage damage. | Use Scenario: Monitors 3.3V camera sensor interface rail in rear-view ADAS ECU operating at 105°C ambient. IC Role / Device Role / Timing Role: Provides fail-safe reset assertion when VCC drops below 2.97V during cold-crank condition. Use Value: Meets ISO 16750-2 pulse 4 requirement for undervoltage immunity while maintaining AEC-Q100 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6755UKTD3+T | Same 3.3V nominal, ±10% window, D3 timeout, but SOT23-6 package with separate UV output instead of combined RESET. | Requires additional routing for UV signal; suited for designs needing independent undervoltage alert prior to full reset. | Select when system firmware requires early warning (UV) before hard reset (RESET) - not drop-in compatible due to pin count and function split. |
| TLV809E33DBZR | Single 3.3V supervisor with 200ms reset timeout, open-drain RESET, no SET pin or manual reset; 1.8–6V operation. | Lacks window detection - only monitors undervoltage; no overvoltage protection or hysteresis adjustment. | Choose only if overvoltage detection is unnecessary and board space allows SOT23-3 footprint; not functionally equivalent. |
Compared with MAX6755UKTD3+T and TLV809E33DBZR, the MAX6755UKLD3+T uniquely delivers integrated window detection with user-selectable hysteresis and active-high push-pull reset in the smallest SOT23-5 form factor - essential for space-constrained telecom and server modules requiring both UV and OV fault coverage.
Availability
MAX6755UKLD3+T is available at Aetrix Electronics and suitable for telecommunications infrastructure, server power management, and industrial DC-DC converter modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6755UKLD3+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX6754–MAX6764 family was designed specifically for robust, low-power voltage supervision in mission-critical power systems - emphasizing precision threshold accuracy, wide temperature operation, and minimal external component count.
FAQ
What is the exact undervoltage and overvoltage threshold range for MAX6755UKLD3+T at +25°C?
The MAX6755UKLD3+T has a guaranteed undervoltage threshold (UVTH) of 2.970V to 3.135V and overvoltage threshold (OVTH) of 3.630V to 3.795V at TA = +25°C, with ±10% window set by connecting SET to VCC. These values shift by <±0.5% over –40°C to +125°C per the datasheet's normalized plots.
Does MAX6755UKLD3+T support operation below 1.4V on VCC?
Yes - the MAX6755UKLD3+T maintains correct RESET logic state down to VCC = 1.0V, though voltage monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2. This enables reliable reset assertion during deep brownout conditions where supply recovers slowly.
Can the SET pin of MAX6755UKLD3+T be left floating?
No - the SET pin must be actively driven to GND, VCC, or VCC/2 to configure ±5%, ±10%, or ±15% window hysteresis. Floating SET results in undefined threshold behavior and is explicitly prohibited in the Absolute Maximum Ratings table.
What is the minimum pulse width required on the MR pin to assert RESET in MAX6755UKLD3+T?
The MAX6755UKLD3+T requires a minimum MR low pulse width of 4µs to reliably assert the RESET output. The device guarantees 300ns propagation delay from MR falling edge to RESET rising edge, making it suitable for fast manual reset response in real-time systems.
Is MAX6755UKLD3+T qualified for automotive applications?
No - only /V-suffixed variants (e.g., MAX6755UKLD3/V) are AEC-Q100 qualified. The MAX6755UKLD3+T is rated for industrial temperature range (–40°C to +125°C) and carries no automotive qualification; it is intended for telecom, computing, and industrial equipment.
MAX6755UKLD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 5V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6755UKLD3+T FAQ
1.How can I place an order for MAX6755UKLD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6755UKLD3+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 MAX6755UKLD3+T reliable?
The price and inventory of MAX6755UKLD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6755UKLD3+T is usually 5 days.
3.What payment methods are accepted for MAX6755UKLD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6755UKLD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6755UKLD3+T?
MAX6755UKLD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6755UKLD3+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 MAX6755UKLD3+T?
For technical support, including MAX6755UKLD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6755UKLD3+T requirements.
6.How does Aetrix verify that MAX6755UKLD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6755UKLD3+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 MAX6755UKLD3+T meets industry standards.
7.What is the process for return or replacement of MAX6755UKLD3+T?
All MAX6755UKLD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6755UKLD3+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 MAX6755UKLD3+T part is unused and in its original packaging.
Return procedure for MAX6755UKLD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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