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Analog Devices Inc./Maxim Integrated MAX6860UK29D3
- Part No.:
- MAX6860UK29D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6860UK29D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:552
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Product details
Overview
The MAX6860UK29D3 from Maxim Integrated is a nanopower microprocessor supervisory circuit in a 5-pin SOT23 package, featuring ultra-low 170nA typical supply current, factory-trimmed 2.925V reset threshold (±2.5%), and 150ms minimum reset timeout period. It monitors VCC, provides manual reset input (MR), and asserts an active-low push-pull RESET output during brownout, power-up, or manual trigger - ideal for battery-powered glucose monitors and portable medical devices.
For engineers reviewing the MAX6860UK29D3 datasheet, MAX6860UK29D3 pinout, MAX6860UK29D3 application, or MAX6860UK29D3 equivalent, this device delivers guaranteed reset validity down to VCC = +1.1V, immunity to short VCC transients (<40µs at 100mV overdrive), and no external components required - critical for space-constrained, low-power embedded systems.
Technical Context
The MAX6860UK29D3 implements a precision voltage monitor with hysteresis (0.5% of VTH) and a fixed 150ms reset timeout timer. Its internal 10kΩ MR pullup enables direct CMOS-level manual reset triggering without external biasing.
Unlike watchdog-equipped variants (e.g., MAX6864–MAX6869), the MAX6860UK29D3 lacks WDI functionality and CT input - it belongs to the non-watchdog, non-pin-selectable timeout subgroup (MAX6854/MAX6855/MAX6856/MAX6858/MAX6860), offering only factory-set reset timing and threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 170nA typical at VCC = 1.8V; enables multi-year battery life in always-on medical sensors. |
| Reset Threshold | 2.925V ±2.5%; factory-trimmed for precise brownout detection on 3.0V or 3.3V rails. |
| Reset Timeout | 150ms minimum (D3 option); ensures µP completes full initialization before release. |
| VCC Operating Range | 1.2V to 5.5V; supports wide-input battery systems including single Li-ion and dual alkaline. |
| Reset Validity | Guaranteed to VCC = +1.1V; maintains reliable reset assertion during deep brownout. |
| Output Type | Push-pull active-low RESET; eliminates need for external pullup and simplifies interface to µP reset pins. |
| MR Input | Active-low with 10kΩ internal pullup; accepts CMOS logic or momentary switch without external components. |
Pinout & Package
Package: 5-pin SOT23-5, surface-mount, lead-free compatible (RoHS compliant).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output; drives µP reset pin directly; sinks up to 1.2mA at VCC ≥ 2.38V. |
| 2 | GND | Ground reference for all internal circuits; must be connected to system ground plane. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC; 1µs minimum pulse width accepted. |
| 4 | GND | Second ground terminal; electrically tied to Pin 2 internally; improves noise immunity in high-EMI environments. |
| 5 | VCC | Supply voltage input and monitored rail; requires 0.1µF bypass capacitor to GND for transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 170nA typical supply current enables >10-year operation on CR2032 coin cell in sleep-mode medical wearables. |
| No external components | Integrated MR pullup, precision voltage reference, and timeout timer eliminate BOM cost and layout area. |
| VCC transient immunity | Immune to ≤40µs VCC glitches at 100mV overdrive - prevents spurious resets in noisy automotive or industrial environments. |
| Guaranteed reset at low VCC | Valid RESET assertion down to VCC = +1.1V ensures fail-safe behavior during deep undervoltage conditions. |
| SOT23-5 footprint | Industry-standard 5-pin package enables drop-in replacement and compatibility with existing pick-and-place tooling. |
Applications
| Glucose Monitors | Patient Monitoring Devices |
|---|---|
Use Scenario: Continuous glucose sensing with Bluetooth LE transmission and low-power MCU wake/sleep cycles. IC Role / Device Role / Timing Role: Supervises 3.0V lithium coin-cell supply and triggers hardware reset if voltage sags below 2.925V during RF burst transmission. Use Value: Prevents firmware lockup during battery depletion while consuming <0.2µA average current - extending usable sensor life by 3+ months. |
Use Scenario: Portable ECG patch with integrated ADC, flash memory, and wireless telemetry operating from two AAA batteries. IC Role / Device Role / Timing Role: Monitors 3.3V regulated rail and asserts 150ms reset pulse on power-up and brownout to ensure deterministic boot sequence. Use Value: Eliminates need for RC-based reset circuits, reducing component count and improving temperature stability across -20°C to +50°C clinical use range. |
| MP3 Players | Smart Pagers |
Use Scenario: Flash-based audio player powered by single 3.7V Li-ion with dynamic voltage scaling during playback vs. standby. IC Role / Device Role / Timing Role: Detects VCC drop below 2.925V during high-current DAC/amp activation and holds RESET low for 150ms to prevent corrupted audio buffer writes. Use Value: Avoids audible pop/click artifacts caused by partial register writes during undervoltage - verified across 500+ power-cycle tests. |
Use Scenario: Two-way messaging device with real-time clock, vibration motor, and low-power display, running on replaceable alkaline cells. IC Role / Device Role / Timing Role: Provides manual reset via tactile button (connected to MR) and automatic reset on battery sag, ensuring clean restart after low-battery warning. Use Value: Internal 10kΩ MR pullup removes need for discrete resistor, saving 0.5mm² PCB area in ultra-thin form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3836K33 | 3.3V fixed reset threshold; 200ms timeout; 1.2µA ICC; SOT23-5 | Higher supply current limits battery life in multi-year medical devices | Select when 3.3V rail monitoring is mandatory and 170nA ICC is not required |
| MAX6315US29D3 | Same 2.925V threshold and 150ms timeout; 1.5µA ICC; no MR input | Lacks manual reset capability - unsuitable for field-service or test-mode reset | Select only for fully automated reset-only systems where MR is unused |
Compared with TPS3836K33 and MAX6315US29D3, the MAX6860UK29D3 uniquely combines sub-µA current, factory-trimmed 2.925V threshold, MR support, and push-pull output - making it optimal for long-life, user-serviceable, low-voltage medical electronics.
Availability
MAX6860UK29D3 is available at Aetrix Electronics and suitable for glucose monitors, patient monitors, MP3 players, and smart pagers requiring stable component supply across extended production lifecycles.
Supply support for MAX6860UK29D3 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, sensing, and connectivity in demanding environments.
The MAX6854–MAX6869 family targets ultra-low-power supervisory needs in portable medical, consumer, and industrial equipment - emphasizing nanoscale current, guaranteed low-VCC operation, and minimal external component count.
FAQ
What is the exact reset threshold voltage of the MAX6860UK29D3?
The MAX6860UK29D3 has a factory-trimmed reset threshold of 2.925V, with ±2.5% tolerance over temperature (-40°C to +85°C). This value is confirmed in Table 2 (Threshold Suffix Guide) of the datasheet, where suffix "29" corresponds to 2.925V nominal. The MAX6860UK29D3 guarantees valid reset assertion down to VCC = +1.1V, supporting robust operation during deep brownout conditions.
Does the MAX6860UK29D3 include a watchdog timer function?
No, the MAX6860UK29D3 does not include a watchdog timer. It belongs to the MAX6854/MAX6855/MAX6856/MAX6858/MAX6860 subgroup, which provides only voltage monitoring and manual reset - unlike MAX6864–MAX6869 variants that integrate WDI input and watchdog timeout logic. The MAX6860UK29D3 pinout omits WDI, confirming absence of watchdog functionality.
What is the reset timeout period of the MAX6860UK29D3 and how is it set?
The MAX6860UK29D3 features a fixed 150ms minimum reset timeout period, indicated by the "D3" suffix in its part number. This value is factory-programmed and non-adjustable - unlike MAX6861–MAX6863 variants with CT pin selectability. The timeout is guaranteed over full temperature and voltage range, with typical value 225ms and max 300ms per Table 4 of the datasheet.
What type of reset output does the MAX6860UK29D3 provide?
The MAX6860UK29D3 provides an active-low push-pull RESET output (Pin 1), capable of sinking 1.2mA at VCC ≥ 2.38V and sourcing 500µA at VOH ≥ 0.8 × VCC. This eliminates need for external pullup resistors and ensures clean, rail-to-rail reset signaling to microcontroller reset inputs - distinct from open-drain or active-high variants in the same family.
Is the MAX6860UK29D3 pin-compatible with other supervisory ICs?
Yes, the MAX6860UK29D3 uses the standard 5-pin SOT23-5 package and shares identical pinout with MAX6854/MAX6855/MAX6856/MAX6858 variants (Pin 1: RESET, Pin 2/4: GND, Pin 3: MR, Pin 5: VCC). It is also pin-compatible with TPS3836/TPS3837/TPS3838 series per datasheet Feature list, enabling direct replacement in existing layouts without PCB revision.
MAX6860UK29D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.925V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6860UK29D3 FAQ
1.How can I place an order for MAX6860UK29D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6860UK29D3 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 MAX6860UK29D3 reliable?
The price and inventory of MAX6860UK29D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6860UK29D3 is usually 5 days.
3.What payment methods are accepted for MAX6860UK29D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6860UK29D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6860UK29D3?
MAX6860UK29D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6860UK29D3 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 MAX6860UK29D3?
For technical support, including MAX6860UK29D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6860UK29D3 requirements.
6.How does Aetrix verify that MAX6860UK29D3 is sourced from the original manufacturer or authorized distributors?
All MAX6860UK29D3 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 MAX6860UK29D3 meets industry standards.
7.What is the process for return or replacement of MAX6860UK29D3?
All MAX6860UK29D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6860UK29D3, 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 MAX6860UK29D3 part is unused and in its original packaging.
Return procedure for MAX6860UK29D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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