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Analog Devices Inc./Maxim Integrated MAX6514UKP045+T
- Part No.:
- MAX6514UKP045+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6514UKP045+T.pdf
- Description:
- IC TEMP SWITCH SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,206
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Product details
Overview
MAX6514UKP045+T from Maxim Integrated is a factory-programmed, hot-threshold temperature switch with +45°C trip point, active-high push-pull output, and 2°C/10°C pin-selectable hysteresis. It operates from 2.7V to 5.5V, consumes 22µA typical supply current, and delivers ±1°C (typ) threshold accuracy over -15°C to +65°C. Used in fan control and overtemperature protection for servers and RAID systems.
For engineers reviewing the MAX6514UKP045+T datasheet, MAX6514UKP045+T pinout, MAX6514UKP045+T application, or MAX6514UKP045+T equivalent, key selection criteria include trip-point accuracy, push-pull drive capability, hysteresis configuration, supply current at extended temperature, and SOT23 thermal interface performance.
Technical Context
The MAX6514UKP045+T integrates a negative-TCO analog temperature sensor, precision fixed voltage reference, and comparator in a single BiCMOS die. Its internal power-on reset ensures stable logic state for ≥50µs at startup.
Hysteresis is controlled solely by the HYST pin: VCC selects 2°C, GND selects 10°C. The TOVER output is CMOS-compatible push-pull, sourcing up to 500µA and sinking up to 1.2mA while maintaining VOH ≥ 0.8×VCC and VOL ≤ 0.3V (at ICC > 2.7V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct connection to common logic rails without regulation |
| Temperature Threshold | +45°C - factory-trimmed hot-threshold; asserts output when die exceeds this point |
| Threshold Accuracy | ±1°C (typ) from -15°C to +65°C - enables precise thermal margining in server thermal management |
| Supply Current | 22µA (typ) - allows battery-backed or always-on monitoring with negligible power impact |
| Hysteresis Options | 2°C (HYST = VCC) or 10°C (HYST = GND) - prevents output oscillation near trip point under slow thermal transients |
| Output Type | Active-high push-pull - drives logic inputs directly without external pull-up; sinks 1.2mA / sources 500µA |
| Operating Temperature | -55°C to +125°C - qualified for industrial and computing environments with wide ambient swings |
Pinout & Package
MAX6514UKP045+T is housed in a 5-pin SOT23 package (package code U5+2), optimized for low thermal resistance (θJA = 140°C/W) and PCB space efficiency. Pin 2 provides lowest thermal path to die for accurate remote sensing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | GND | Power and signal reference ground; Pin 2 is primary thermal conduction path to PCB |
| 3 | HYST | Hysteresis select input: connect to VCC for 2°C hysteresis, GND for 10°C |
| 4 | VCC | Positive supply input; bypass with 0.1µF capacitor to GND for noise immunity |
| 5 | TOVER | Active-high push-pull output; goes high when die temperature exceeds +45°C |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed +45°C trip point | Eliminates external calibration; enables drop-in replacement in thermal shutdown circuits requiring this exact threshold |
| Push-pull output with 500µA source / 1.2mA sink | Drives microcontroller GPIO, FPGA input, or logic gate directly-no pull-up resistor required |
| Pin-selectable hysteresis (2°C or 10°C) | Allows system-level tuning of thermal response stability without changing BOM or layout |
| 22µA typical supply current | Enables continuous monitoring in always-on subsystems (e.g., baseboard management controllers) |
| ±1°C (typ) accuracy over -15°C to +65°C | Supports tight thermal guardbanding in high-reliability compute platforms |
Applications
| Fan Control | Server Overtemperature Protection |
|---|---|
Use Scenario: Regulates CPU or GPU cooling fans based on local die temperature. IC Role / Device Role / Timing Role: Hot-threshold temperature switch asserting TOVER at +45°C to trigger fan enable signal. Use Value: Prevents thermal throttling by initiating airflow before critical junction temperatures are reached; hysteresis avoids fan chatter during transient loads. |
Use Scenario: Monitors motherboard VRM or memory module temperature to prevent thermal runaway. IC Role / Device Role / Timing Role: Primary overtemperature detector feeding shutdown logic in redundant server power domains. Use Value: Delivers deterministic +45°C trip with <1°C error, enabling safe derating margins below silicon maximum ratings. |
| RAID Controller Thermal Monitoring | Notebook Battery Pack Safety |
Use Scenario: Detects overheating in multi-drive storage enclosures with stacked PCBs and limited airflow. IC Role / Device Role / Timing Role: Localized hot-spot monitor placed near RAID controller ASIC or power MOSFETs. Use Value: Low 22µA quiescent current extends enclosure standby time; SOT23 footprint minimizes board area in dense layouts. |
Use Scenario: Guards against lithium-ion battery thermal excursion during fast charging or high-load discharge. IC Role / Device Role / Timing Role: Secondary thermal cutoff integrated into battery management subsystem, independent of fuel gauge IC. Use Value: Push-pull output interfaces directly with battery protection FET gate driver; no external components reduce failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6514UKP055+T | +55°C trip point; otherwise identical electrical and mechanical specs | Used where higher thermal margin is required before fan activation or shutdown | Select when system thermal design targets 55°C as critical threshold instead of 45°C |
| LM20BIMAX/NOPB | Analog output temperature sensor (not switch); requires external comparator and reference; no hysteresis control | Suitable for closed-loop thermal regulation with variable thresholds, not binary alarm | Choose only if programmable trip point or analog feedback is needed; adds complexity and component count |
Compared with MAX6514UKP045+T, the +55°C variant shifts thermal response upward for less aggressive intervention, while LM20BIMAX/NOPB trades simplicity and determinism for flexibility-requiring external circuitry to replicate basic switching behavior.
Availability
MAX6514UKP045+T is available at Aetrix Electronics and suitable for fan control, server overtemperature protection, RAID controller thermal monitoring, and notebook battery pack safety requiring stable component supply across industrial and computing product lifecycles.
Supply support for MAX6514UKP045+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) designs precision analog and mixed-signal ICs for industrial, computing, and communications systems, with emphasis on integration, reliability, and low-power operation.
The MAX6514/MAX6515 family delivers fully integrated, factory-trimmed temperature switches targeting cost-sensitive thermal protection in servers, storage, and portable electronics-replacing discrete sensor+comparator solutions.
FAQ
What is the exact temperature trip point of the MAX6514UKP045+T?
The MAX6514UKP045+T has a factory-programmed hot-threshold trip point of +45°C. This value is trimmed during manufacturing and specified with ±1°C typical accuracy over the -15°C to +65°C range. The device asserts its TOVER output high when the die temperature exceeds this threshold.
Does the MAX6514UKP045+T require external components to operate?
No, the MAX6514UKP045+T requires no external components for basic operation. A 0.1µF bypass capacitor on VCC is recommended for noise immunity, but the internal reference, sensor, and comparator are fully integrated. Hysteresis is configured via the HYST pin alone-no resistors or capacitors needed.
What is the function of the HYST pin on the MAX6514UKP045+T?
The HYST pin on the MAX6514UKP045+T selects hysteresis magnitude: connecting it to VCC configures 2°C hysteresis, while connecting it to GND configures 10°C hysteresis. This prevents output oscillation when die temperature lingers near the +45°C trip point during thermal transients.
Can the MAX6514UKP045+T operate at -45°C ambient temperature?
The MAX6514UKP045+T is rated for operation from -55°C to +125°C, but achieving full specification-including trip accuracy-at -45°C requires VCC > 4.5V per datasheet Note 3. At lower supply voltages, the device remains functional but threshold accuracy degrades outside the -15°C to +65°C range.
Is the MAX6514UKP045+T RoHS-compliant and lead-free?
Yes, the "+T" suffix in MAX6514UKP045+T denotes a lead(Pb)-free and RoHS-compliant package. The device uses a 5-pin SOT23 package with matte tin lead finish, qualified per JEDEC J-STD-020 moisture sensitivity level 1.
MAX6514UKP045+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
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 45°C
- Accuracy:
- ±1.5°C
- Current - Output (Max):
- -
- Output Type:
- Push-Pull
- Output:
- Active High
- Output Function:
- OverTemp
- Selectable Hysteresis:
- Yes
- Features:
- -
- Voltage - Supply:
- 2.7 V ~ 5.5 V
- Current - Supply:
- 22µA
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-5
MAX6514UKP045+T FAQ
1.How can I place an order for MAX6514UKP045+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6514UKP045+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 MAX6514UKP045+T reliable?
The price and inventory of MAX6514UKP045+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6514UKP045+T is usually 5 days.
3.What payment methods are accepted for MAX6514UKP045+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6514UKP045+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6514UKP045+T?
MAX6514UKP045+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6514UKP045+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 MAX6514UKP045+T?
For technical support, including MAX6514UKP045+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6514UKP045+T requirements.
6.How does Aetrix verify that MAX6514UKP045+T is sourced from the original manufacturer or authorized distributors?
All MAX6514UKP045+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 MAX6514UKP045+T meets industry standards.
7.What is the process for return or replacement of MAX6514UKP045+T?
All MAX6514UKP045+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6514UKP045+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 MAX6514UKP045+T part is unused and in its original packaging.
Return procedure for MAX6514UKP045+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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