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Analog Devices Inc./Maxim Integrated MAX6508UT0A32-T
- Part No.:
- MAX6508UT0A32-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SOT-23-6
- Datasheet:
-
MAX6508UT0A32-T.pdf
- Description:
- DUAL TRIP SOT TEMPERATURE SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
The MAX6508UT0A32-T from Maxim Integrated is a dual-threshold, push-pull output temperature switch in SOT23-6 packaging, factory-programmed with TUNDER = -40°C and TOVER = +125°C, operating from +2.5V to +5.5V, delivering ±0.5°C typical threshold accuracy and 30µA typical supply current for thermal window monitoring in microprocessor systems.
For engineers reviewing the MAX6508UT0A32-T datasheet, MAX6508UT0A32-T pinout, MAX6508UT0A32-T application, or MAX6508UT0A32-T equivalent, key selection criteria include its push-pull OVER/OK outputs, pin-selectable 2°C/10°C hysteresis via S0, factory-set full-range trip points, and SOT23 footprint compatibility with space-constrained thermal management designs.
Technical Context
The MAX6508UT0A32-T implements a fully integrated BiCMOS temperature-sensing architecture with two factory-trimmed bandgap references-one positive and one negative temperature coefficient-whose intersection defines precise trip thresholds. It uses internal comparators to drive push-pull digital outputs without external components.
Its dual-output logic (OVER active-high, OK active-low) enables direct interface with microcontroller GPIOs or system control logic. Hysteresis is selected solely by the S0 pin (GND = 2°C, VCC = 10°C), while no S1 connection is used-consistent with MAX6507/MAX6508 architecture and confirmed in Pin Description Table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - supports direct connection to common logic rails without level-shifting. |
| Threshold Accuracy | ±0.5°C (typ) - ensures tight thermal window control across -40°C to +125°C ambient. |
| Supply Current | 30µA (typ) - enables always-on thermal monitoring with negligible impact on system power budget. |
| Hysteresis | 2°C or 10°C (pin-selectable via S0) - prevents output chatter near trip points under slow thermal transients. |
| Output Type | Push-pull (OVER high-active, OK low-active) - eliminates need for external pull-up resistors and simplifies PCB layout. |
| Package | SOT23-6 - surface-mount footprint compatible with automated assembly and high-density layouts. |
| Operating Temp | -40°C to +125°C - matches industrial and extended-temperature microprocessor environments. |
Pinout & Package
MAX6508UT0A32-T is housed in a RoHS-compliant 6-pin SOT23 package (package code U6SN+1), with 115°C/W thermal resistance and standard 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OK | Push-pull active-low output asserting when die temperature is between TOVER and TUNDER (-40°C to +125°C). |
| 2 | GND | Ground reference for internal circuitry and output stage; must be low-impedance connection. |
| 3 | S0 | Hysteresis select input: GND = 2°C, VCC = 10°C - no internal pull-up/down; requires explicit biasing. |
| 4 | VCC | Positive supply input; requires local 0.1µF ceramic bypass capacitor to GND per layout guidelines. |
| 5 | N.C. | No internal connection - left unconnected; not usable as spare I/O or ground. |
| 6 | OVER | Push-pull active-high output asserting when die temperature exceeds TOVER (+125°C). |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-programmed thresholds | TUNDER = -40°C and TOVER = +125°C - enables full-range thermal window detection without calibration or trimming. |
| Pin-selectable hysteresis | 2°C or 10°C via single S0 pin - provides noise immunity tuning without additional components or firmware. |
| Push-pull output stage | Eliminates external pull-up resistors for both OVER and OK signals - reduces BOM count and board area. |
| Low quiescent current | 30µA typical supply current - allows continuous monitoring in battery-backed or energy-sensitive systems. |
| No external components required | Self-contained sensing and logic - simplifies design validation and accelerates time-to-market for thermal protection circuits. |
Applications
| Microprocessor Thermal Monitoring | Fan Speed Control Interface |
|---|---|
Use Scenario: Mounted beneath a socketed CPU to monitor real-time die temperature during load transitions. IC Role / Device Role / Timing Role: Dual-output thermal window detector providing OK (in-spec) and OVER (overheat) status signals to host controller. Use Value: Enables immediate fan activation at +125°C and safe operation confirmation below -40°C, preventing thermal runaway without software polling. | Use Scenario: Directly driving fan enable logic in embedded industrial controllers where discrete transistor stages are undesirable. IC Role / Device Role / Timing Role: Push-pull OVER output serves as hardware-based fan trigger; OK output confirms nominal thermal zone. Use Value: Reduces component count by eliminating pull-up resistors and level shifters, improving reliability in high-vibration environments. |
| Power Supply Thermal Shutdown | Industrial PLC Temperature Guardbanding |
Use Scenario: Monitoring heatsink temperature in DC-DC converter modules to initiate graceful shutdown before MOSFET thermal failure. IC Role / Device Role / Timing Role: Hardware-level overtemperature latch using OVER signal to disable PWM controller enable pin. Use Value: Provides fail-safe, sub-100µs response to thermal excursions independent of firmware state or clock domain. | Use Scenario: Verifying ambient sensor housing remains within operational envelope (-40°C to +125°C) in outdoor automation cabinets. IC Role / Device Role / Timing Role: OK output indicates valid operating range; persistent LOW on OK triggers diagnostic alert. Use Value: Detects enclosure seal failure or heater malfunction by identifying out-of-window conditions with ±0.5°C repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-threshold temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6507UT0A32-T | Open-drain OVER/OK outputs; identical trip points (-40°C/+125°C) and S0 hysteresis selection. | Requires external pull-up resistors; suited for wired-OR bus configurations or mixed-voltage systems. | Select when interfacing with legacy 3.3V/5V open-drain buses or where output contention tolerance is needed. |
| LMT70AYPWR | Analog output temperature sensor (not switch); 0.1°C accuracy but requires ADC and firmware decision logic. | Enables programmable thresholds and dynamic adjustment; lacks hardware-level immediacy of MAX6508UT0A32-T. | Select when fine-grained thermal profiling is required, not binary window detection. |
Compared with MAX6507UT0A32-T, the MAX6508UT0A32-T eliminates pull-up resistors and reduces system latency; compared with LMT70AYPWR, it delivers deterministic, zero-software thermal fault response but lacks analog resolution.
Availability
MAX6508UT0A32-T is available at Aetrix Electronics and suitable for microprocessor thermal monitoring, fan control interfaces, power supply thermal shutdown, and industrial PLC guardbanding requiring stable component supply and long-term lifecycle support.
Supply support for MAX6508UT0A32-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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and power management ICs for industrial, computing, and communications systems.
The MAX6505–MAX6508 family was designed specifically for cost-sensitive, space-constrained thermal protection applications requiring factory-set dual thresholds and minimal external components.
FAQ
What are the exact factory-programmed temperature thresholds for MAX6508UT0A32-T?
The MAX6508UT0A32-T has TUNDER = -40°C and TOVER = +125°C, as indicated by the "0A32" suffix per Table 4 in the datasheet: "0A" maps to -40°C and "32" maps to +125°C. These are laser-trimmed during manufacturing and require no user configuration. The MAX6508UT0A32-T operates across the full industrial temperature range with ±0.5°C typical accuracy at these setpoints.
Does MAX6508UT0A32-T require external pull-up resistors on its outputs?
No, the MAX6508UT0A32-T features push-pull outputs for both OVER and OK pins, eliminating the need for external pull-up resistors. This contrasts with open-drain variants like MAX6507UT0A32-T. The push-pull stage drives high or low actively, enabling direct connection to microcontroller inputs or logic gates without additional components - a key design advantage confirmed in the Pin Description and Typical Operating Circuits sections.
How is hysteresis configured on MAX6508UT0A32-T?
Hysteresis on the MAX6508UT0A32-T is configured exclusively via the S0 pin (Pin 3): connecting S0 to GND selects 2°C hysteresis, and connecting S0 to VCC selects 10°C hysteresis. S1 is not used in MAX6508 devices and remains unconnected. This single-pin control simplifies layout and avoids ambiguity - verified in Table 2 (Hysteresis Selection) and Pin Description.
What is the supply current consumption of MAX6508UT0A32-T across temperature?
The MAX6508UT0A32-T consumes 30µA typical supply current at +25°C and VCC = +5V, with maximum 60µA across -40°C to +125°C per Electrical Characteristics. Its supply current remains stable over voltage (2.5V–5.5V) and temperature, enabling predictable power budgeting in always-on thermal monitoring circuits - confirmed in Figure MAX6505/8-01 and the ICC specification row.
Can MAX6508UT0A32-T be used in place of MAX6505 or MAX6506 series parts?
No, the MAX6508UT0A32-T is not functionally interchangeable with MAX6505/MAX6506 parts. It implements a different architecture: dual-threshold window detection (OVER/OK) versus alarm/warning (ALARM/WARN) logic. Pinout differs (e.g., N.C. on Pin 5 vs. ALARM/WARN), and output polarity and behavior are incompatible. Substitution would require PCB redesign and firmware changes - confirmed in Pin Configurations and Detailed Description sections.
MAX6508UT0A32-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- Programmable
- Accuracy:
- ±5.5°C
- Current - Output (Max):
- 20mA
- Output Type:
- Push-Pull
- Output:
- Active High, Active Low
- Output Function:
- OverTemp
- Selectable Hysteresis:
- Yes
- Features:
- Delta Select Inputs
- Voltage - Supply:
- 2.5 V ~ 5.5 V
- Current - Supply:
- 30µA
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-6
MAX6508UT0A32-T FAQ
1.How can I place an order for MAX6508UT0A32-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6508UT0A32-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 MAX6508UT0A32-T reliable?
The price and inventory of MAX6508UT0A32-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6508UT0A32-T is usually 5 days.
3.What payment methods are accepted for MAX6508UT0A32-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6508UT0A32-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6508UT0A32-T?
MAX6508UT0A32-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6508UT0A32-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 MAX6508UT0A32-T?
For technical support, including MAX6508UT0A32-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6508UT0A32-T requirements.
6.How does Aetrix verify that MAX6508UT0A32-T is sourced from the original manufacturer or authorized distributors?
All MAX6508UT0A32-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 MAX6508UT0A32-T meets industry standards.
7.What is the process for return or replacement of MAX6508UT0A32-T?
All MAX6508UT0A32-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6508UT0A32-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 MAX6508UT0A32-T part is unused and in its original packaging.
Return procedure for MAX6508UT0A32-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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