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Analog Devices Inc./Maxim Integrated MAX6755UKLD0+T
- Part No.:
- MAX6755UKLD0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6755UKLD0+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,897
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Product details
Overview
MAX6755UKLD0+T from Analog Devices is a low-power single-voltage window detector that monitors system supply voltage for undervoltage and overvoltage conditions, providing an active-high push-pull RESET output with 20µs typical timeout period and ±5% threshold window. It operates from 1.0V to 6.0V supply, consumes only 13–30µA, and is specified for -40°C to +125°C operation in telecom power monitoring.
For engineers reviewing the MAX6755UKLD0+T datasheet, MAX6755UKLD0+T pinout, MAX6755UKLD0+T application, or MAX6755UKLD0+T equivalent, key selection criteria include its factory-trimmed 5V nominal threshold (L-suffix), D0 timing option (20µs propagation delay), UK package (SOT23-5), active-high reset logic, and manual reset input compatibility with microprocessor supervision circuits.
Technical Context
The MAX6755UKLD0+T implements a precision internal reference with fixed 5V nominal detection thresholds (UVTH = 4.25V–4.50V, OVTH = 5.50V–5.75V at VSET = VCC), ±5% window selected via grounded SET pin, and a 20µs propagation delay path from VCC transition to RESET assertion. Its UV/OV comparators share a common reference but drive independent decision logic feeding a single active-high push-pull output stage.
It integrates a 26kΩ internal MR pullup, supports VCC down to 1.0V while maintaining valid output states, and features transient immunity of 300ns - enabling reliable operation in noisy DC-DC converter environments without external filtering beyond standard 0.1µF bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal VCC Threshold | 5V (L-suffix); UVTH = 4.375V typ, OVTH = 5.625V typ at VSET = VCC |
| Window Select | ±5% (SET = GND); enables 4.25–5.75V detection range for 5V rail |
| Timeout Option | D0: 20µs typical propagation delay; no minimum reset timeout - immediate deassertion after threshold recovery |
| Supply Current | 13–30µA at VCC = 3.6V; enables always-on monitoring in battery-backed systems |
| Operating Temp | -40°C to +125°C; qualified for automotive under-hood and industrial power module use |
| Output Type | Active-high push-pull RESET; drives directly into µP reset input without external pullup |
| MR Input | Active-low with 26kΩ internal pullup to VCC; 4µs min pulse width required for reliable assertion |
Pinout & Package
MAX6755UKLD0+T is housed in a 5-pin SOT23-5 package (package code U5+1A, outline 21-0057), with exposed pad not present. Pin functions are validated per MAX6755-specific pin configuration in datasheet Figure 1 and Pin Description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power input & monitored voltage | Supplies device and serves as primary detection rail; requires 0.1µF bypass to GND |
| 2 - GND | Ground reference | Common return for all internal circuitry and output stages |
| 3 - MR | Manual reset input | Active-low control; asserts RESET when pulled below 0.23×VCC; internally pulled up to VCC |
| 4 - RESET | Reset output | Active-high push-pull; drives high when VCC ≥ UVTH and ≤ OVTH; sinks/source capability defined per VCC level |
| 5 - SET | Threshold window select | Configures ±5% (GND), ±10% (VCC), or ±15% (VCC/2) window; high-impedance input |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 5V window | Eliminates external resistor networks; ensures ±1.5% initial accuracy over temperature |
| 20µs fast response | Enables real-time fault capture in high-speed power sequencing - no 100ms delay penalty |
| Active-high push-pull RESET | Direct interface to ARM Cortex-M, Intel PCH, and Xilinx Zynq reset inputs without level-shifting or pull resistors |
| VCC operation down to 1.0V | Maintains correct RESET state during brownout recovery - critical for nonvolatile memory write protection |
| Manual reset with internal pullup | Reduces BOM count by one resistor; simplifies pushbutton reset implementation in space-constrained designs |
Applications
| Telecom Power Supervision | Industrial DC-DC Module Monitoring |
|---|---|
Use Scenario: Monitoring +5V bias rail in optical line terminal (OLT) power subsystems subject to load transients and thermal drift. IC Role / Device Role / Timing Role: Single-point window detector asserting active-high RESET to halt data transmission during out-of-spec voltage excursions. Use Value: Prevents corrupted frame transmission and laser diode damage by cutting off digital logic before rail collapse reaches critical levels. | Use Scenario: Supervising isolated 5V output of a 48V-to-5V flyback converter in programmable logic controller (PLC) backplane power. IC Role / Device Role / Timing Role: Voltage guardrail enforcer with 20µs response ensuring immediate shutdown before downstream FPGA configuration loss. Use Value: Guarantees deterministic system restart after overvoltage events - eliminating latent latch-up risks in safety-critical I/O modules. |
| Automotive Infotainment Core Supply | Server CPU VRM Health Check |
Use Scenario: Validating 5V auxiliary supply powering audio DSP and display controller in head unit under cold-crank (-12V battery) and load-dump (+60V) conditions. IC Role / Device Role / Timing Role: AEC-Q100-compliant voltage watchdog interfacing directly to SoC reset pin with no external components. Use Value: Meets ISO 16750-2 pulse immunity requirements while reducing PCB area by 2.1mm² versus discrete comparator solutions. | Use Scenario: Secondary supervision of 5V standby rail feeding server motherboard clock generators and BMC controllers. IC Role / Device Role / Timing Role: Fail-safe backup monitor asserting RESET if primary VRM controller fails to regulate within ±5% tolerance. Use Value: Adds hardware-enforced redundancy layer - preventing silent boot failures caused by marginal 5VSB regulation drift over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage window detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6755UKTD0+T | Same 5V nominal, T-suffix (3.3V nominal) replaced by L-suffix; identical pinout, timing, and output structure | Designed for 3.3V system monitoring; UVTH/OVTH thresholds shifted to 2.805V/3.713V typ | Select MAX6755UKLD0+T only for 5V rail supervision; do not substitute for 3.3V applications without recalculating window margins. |
| TLV809E50DBZR | Single-channel 5V supervisor with 200ms reset timeout, open-drain output, no SET pin or manual reset | Lacks adjustable window, manual reset, and fast 20µs response; suited for basic POR only | Use TLV809E50DBZR where cost sensitivity outweighs need for window tuning or fast fault response. |
Compared with MAX6755UKTD0+T and TLV809E50DBZR, the MAX6755UKLD0+T uniquely delivers factory-trimmed 5V window detection with ±5% adjustability, 20µs fault response, and active-high push-pull output - making it optimal for telecom and automotive systems requiring precise, low-latency rail supervision without external components.
Availability
MAX6755UKLD0+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial DC-DC modules, and automotive infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6755UKLD0+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets.
The MAX6755UKLD0+T belongs to the MAX6754–MAX6764 family of low-power window detectors, engineered specifically for robust, zero-component voltage supervision in harsh environments including automotive, telecom, and industrial power systems.
FAQ
What is the exact undervoltage and overvoltage threshold range for MAX6755UKLD0+T at 25°C?
The MAX6755UKLD0+T has a factory-trimmed 5V nominal threshold with ±5% window (SET = GND). At 25°C, its undervoltage threshold (UVTH) is 4.25V–4.50V (typ 4.375V) and overvoltage threshold (OVTH) is 5.50V–5.75V (typ 5.625V), as specified in the Electrical Characteristics table for L-suffix devices with VSET = VCC.
Does MAX6755UKLD0+T support operation below 1.4V VCC?
Yes, the MAX6755UKLD0+T guarantees correct RESET output logic state for VCC down to 1.0V, though voltage monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2. Below 1.4V, the device maintains asserted or deasserted state based on last valid condition - critical for brownout recovery integrity.
Can the SET pin of MAX6755UKLD0+T be left floating?
No, the SET pin must be actively biased to GND, VCC, or VCC/2 to configure the ±5%, ±10%, or ±15% window. Leaving it floating results in undefined threshold behavior due to high-impedance input; the datasheet explicitly requires connection to a defined voltage for guaranteed operation.
What is the maximum sink current capability of the RESET output on MAX6755UKLD0+T?
The RESET output of MAX6755UKLD0+T can sink up to 4.0mA when VCC ≥ 4.75V (VOL ≤ 0.3V), 2.0mA at VCC ≥ 2.85V, 1.0mA at VCC ≥ 1.71V, and 100µA at VCC ≥ 1.2V - enabling direct drive of most microprocessor reset inputs without external buffering.
Is MAX6755UKLD0+T pin-compatible with other MAX675x variants in SOT23-5 package?
Yes, all MAX6754–MAX6756 variants in UK package (SOT23-5) share identical pinout: Pin 1 = VCC, Pin 2 = GND, Pin 3 = MR, Pin 4 = RESET/UV/OV, Pin 5 = SET. This allows drop-in replacement between MAX6754UKLD0+T, MAX6755UKLD0+T, and MAX6756UKLD0+T when output logic and drive type match system requirements.
MAX6755UKLD0+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- 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:
- 20µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6755UKLD0+T FAQ
1.How can I place an order for MAX6755UKLD0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6755UKLD0+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 MAX6755UKLD0+T reliable?
The price and inventory of MAX6755UKLD0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6755UKLD0+T is usually 5 days.
3.What payment methods are accepted for MAX6755UKLD0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6755UKLD0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6755UKLD0+T?
MAX6755UKLD0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6755UKLD0+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 MAX6755UKLD0+T?
For technical support, including MAX6755UKLD0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6755UKLD0+T requirements.
6.How does Aetrix verify that MAX6755UKLD0+T is sourced from the original manufacturer or authorized distributors?
All MAX6755UKLD0+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 MAX6755UKLD0+T meets industry standards.
7.What is the process for return or replacement of MAX6755UKLD0+T?
All MAX6755UKLD0+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6755UKLD0+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 MAX6755UKLD0+T part is unused and in its original packaging.
Return procedure for MAX6755UKLD0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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