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Analog Devices Inc./Maxim Integrated MAX6755UKZD3+
- Part No.:
- MAX6755UKZD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6755UKZD3+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:970
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Product details
Overview
The MAX6755UKZD3+ 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, active-high push-pull RESET output, and manual reset input - used in telecom power supervision and microprocessor reset control.
For engineers reviewing the MAX6755UKZD3+ datasheet, MAX6755UKZD3+ pinout, MAX6755UKZD3+ application, or MAX6755UKZD3+ equivalent, this page delivers verified electrical specs, SOT23-5 package details, temperature-stable threshold behavior (-40°C to +125°C), and direct alternatives for voltage monitoring in DC-DC converter modules and automotive ECUs.
Technical Context
The MAX6755UKZD3+ implements a dual-threshold comparator architecture with internal bandgap reference and precision resistor divider, enabling fixed 2.5V nominal detection (Z suffix) with ±15% window set via SET pin biasing at VCC/2. It asserts RESET high when VCC falls below 2.125V or rises above 2.875V (TA = -40°C to +125°C).
Its 100ms minimum timeout period (D3 suffix) ensures reliable microprocessor reset hold-off during brownout recovery, while the active-high push-pull output drives logic-level loads directly without external pull-up, and the MR input supports system-initiated resets with 300ns propagation delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Supply Voltage | 2.5V - Factory-trimmed detection point for core logic rails in embedded systems |
| Window Tolerance | ±15% - Set by biasing SET pin to VCC/2; enables robust margin against ripple and drift |
| UV Threshold (min) | 2.125V - Guaranteed falling-VCC undervoltage trip point across full temperature range |
| OV Threshold (max) | 2.875V - Guaranteed rising-VCC overvoltage trip point across full temperature range |
| Reset Timeout | 100ms min - Ensures stable CPU reset assertion during slow power-up or recovery transients |
| Supply Current | 13µA typ at 3.6V - Enables always-on monitoring in battery-backed or low-power IoT nodes |
| Operating Temp | -40°C to +125°C - Qualified for under-hood automotive and industrial power supply monitoring |
Pinout & Package
MAX6755UKZD3+ is housed in a 5-pin SOT23-5 package with exposed pad not present (TDFN variants are MAX6760–MAX6762). Pin 1 is VCC, Pin 2 is GND, Pin 3 is MR, Pin 4 is RESET, Pin 5 is SET - all pins support operation from 1.0V to 6.0V with 20mA absolute max current rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power input & monitored voltage | Supplies internal circuitry and serves as the primary voltage being checked; valid down to 1.0V for output assertion |
| GND (Pin 2) | Reference ground | Return path for all internal comparators and output drivers; must be low-impedance for accurate threshold tracking |
| MR (Pin 3) | Active-low manual reset | Asserts RESET high when pulled low; internally pulled up to VCC via 26kΩ; requires ≥4µs pulse width |
| RESET (Pin 4) | Active-high push-pull output | Drives CMOS inputs directly; VOH ≥ 0.8×VCC at 0.8mA source; VOL ≤ 0.3V at 1.0mA sink |
| SET (Pin 5) | Window select input | Bias to VCC/2 for ±15% window; connects to internal resistor divider to scale reference for UV/OV thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.5V window | Eliminates external resistor networks for 2.5V rail monitoring - reduces BOM count and layout area |
| ±15% adjustable window | Enables tighter or looser tolerance selection via single SET pin bias - no re-spin required for margin tuning |
| 100ms minimum timeout | Guarantees sufficient reset hold time for ARM Cortex-M or RISC-V boot sequences after brownout |
| Active-high push-pull RESET | Directly interfaces with processors requiring high-true reset signals without pull-up resistors or level shifters |
| Manual reset input (MR) | Supports hardware-initiated system reset via front-panel button or watchdog timeout signal |
Applications
| Telecom Power Supervision | Microprocessor Reset Control |
|---|---|
Use Scenario: Monitoring 2.5V LDO output powering baseband processor in 4G/5G small cell radio. IC Role / Device Role / Timing Role: Window detector asserting active-high RESET to halt processor execution during undervoltage/overvoltage events. Use Value: Prevents corrupted memory writes and firmware crashes caused by out-of-spec supply during RF burst transmission. | Use Scenario: Supervising 2.5V I/O supply in automotive ADAS domain controller during cold-crank conditions. IC Role / Device Role / Timing Role: Single-supply window monitor with 100ms timeout ensuring deterministic reset release after battery recovery. Use Value: Guarantees clean boot sequence after engine start, eliminating boot-loop failures due to slow-rising 2.5V rail. |
| DC-DC Converter Module Monitoring | Industrial PLC Power Management |
Use Scenario: Verifying output stability of isolated 2.5V flyback converter in programmable logic controller backplane. IC Role / Device Role / Timing Role: Standalone voltage supervisor interfacing with FPGA configuration manager via RESET signal. Use Value: Detects converter failure modes (e.g., optocoupler aging, transformer saturation) before field-deployed logic corruption occurs. | Use Scenario: Monitoring auxiliary 2.5V supply feeding real-time Ethernet PHY in industrial switch operating at 85°C ambient. IC Role / Device Role / Timing Role: High-temp qualified window detector providing fail-safe reset to network stack on supply deviation. Use Value: Maintains deterministic network link recovery without software intervention during thermal stress events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6755UKTD3+ | 3.3V nominal threshold instead of 2.5V; same ±15% window, D3 timeout, and push-pull RESET | Designed for 3.3V I/O rails - not suitable for 2.5V core logic monitoring without external scaling | Select only if supervising 3.3V supply; incompatible pin-for-pin replacement for 2.5V use case |
| TLV809E25DBZR | Single 2.5V undervoltage detector (no overvoltage function); 200ms reset timeout; open-drain output | Lacks overvoltage detection and active-high drive - requires external pull-up and cannot detect overvoltage faults | Use where OV detection is unnecessary and board space allows pull-up resistor; lower cost but reduced fault coverage |
Compared with MAX6755UKTD3+, the MAX6755UKZD3+ provides correct 2.5V threshold alignment without external components; versus TLV809E25DBZR, it adds overvoltage protection and eliminates pull-up dependency - critical for safety-critical 2.5V rail supervision.
Availability
MAX6755UKZD3+ is available at Aetrix Electronics and suitable for telecom power supervision, microprocessor reset control, and DC-DC converter module monitoring requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX6755UKZD3+ 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.
The MAX6754–MAX6764 family was engineered specifically for reliable, low-power voltage supervision in space-constrained and thermally demanding environments - targeting telecom infrastructure, automotive ECUs, and industrial controllers.
FAQ
What is the exact undervoltage and overvoltage threshold range for MAX6755UKZD3+ across temperature?
The MAX6755UKZD3+ guarantees an undervoltage threshold of 2.125V (min) and overvoltage threshold of 2.875V (max) over -40°C to +125°C, corresponding to ±15% around its 2.5V nominal point. These values are factory-trimmed and include hysteresis of 0.7% to prevent chatter near trip points. The MAX6755UKZD3+ maintains threshold accuracy without external calibration.
Does MAX6755UKZD3+ support operation below 1.4V supply voltage?
Yes - the MAX6755UKZD3+ operates with VCC as low as 1.0V, and its RESET output remains asserted in the correct logic state down to that level. However, voltage monitoring functionality (i.e., accurate UV/OV detection) requires VCC ≥ 1.4V per datasheet Note 2. Below 1.4V, the device holds last-known state but does not actively track supply deviations.
How is the ±15% window configured on MAX6755UKZD3+?
The ±15% window on MAX6755UKZD3+ 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 (e.g., two equal resistors from VCC to GND) selects ±15%. No external capacitors or trimming are needed - the internal reference scales accordingly.
What is the reset timeout behavior of MAX6755UKZD3+ during power-up?
The MAX6755UKZD3+ features a 100ms minimum reset timeout (D3 suffix) that begins after VCC exceeds the UV threshold. Unlike startup delay in some supervisors, this timeout ensures RESET remains asserted for ≥100ms after valid supply is established - providing guaranteed hold time for microprocessor initialization sequences before release.
Can MAX6755UKZD3+ be used in automotive applications?
Yes - the MAX6755UKZD3+ is specified from -40°C to +125°C and built on Maxim's BiCMOS process for high reliability. While the /V automotive-qualified variant uses different ordering codes (e.g., MAX6755UKZD3/V+), the MAX6755UKZD3+ itself meets the temperature and stability requirements for under-dash and non-safety-critical ECU monitoring, pending customer qualification.
MAX6755UKZD3+ 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:
- 2.5V
- 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
MAX6755UKZD3+ FAQ
1.How can I place an order for MAX6755UKZD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6755UKZD3+ 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 MAX6755UKZD3+ reliable?
The price and inventory of MAX6755UKZD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6755UKZD3+ is usually 5 days.
3.What payment methods are accepted for MAX6755UKZD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6755UKZD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6755UKZD3+?
MAX6755UKZD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6755UKZD3+ 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 MAX6755UKZD3+?
For technical support, including MAX6755UKZD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6755UKZD3+ requirements.
6.How does Aetrix verify that MAX6755UKZD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6755UKZD3+ 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 MAX6755UKZD3+ meets industry standards.
7.What is the process for return or replacement of MAX6755UKZD3+?
All MAX6755UKZD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6755UKZD3+, 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 MAX6755UKZD3+ part is unused and in its original packaging.
Return procedure for MAX6755UKZD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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