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Analog Devices Inc./Maxim Integrated MAX6416UK+T
- Part No.:
- MAX6416UK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6416UK+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,174
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Product details
Overview
MAX6416UK+T from Maxim Integrated is an automotive-grade, low-power microprocessor supervisor IC with adjustable reset input for monitoring voltages down to 1.26V, active-high push-pull reset output, capacitor-adjustable reset timeout (3.0–5.75ms at CSRT = 1500pF), and guaranteed operation from -40°C to +125°C. It serves as a system-level voltage monitor and reset controller in battery-powered embedded controllers requiring precise brownout protection.
For engineers reviewing the MAX6416UK+T datasheet, MAX6416UK+T pinout, MAX6416UK+T application, or MAX6416UK+T equivalent, key selection criteria include its adjustable RESET IN threshold (1.205–1.305V), 1.7µA typical supply current at VCC ≤ 2.0V, SOT23-5 package compatibility, and AEC-Q100 qualification for automotive use cases.
Technical Context
The MAX6416UK+T implements a precision 240nA ramp current source charging an external capacitor on the SRT pin to generate a programmable reset timeout period; reset deassertion occurs when the capacitor voltage reaches 0.65V. Its RESET IN comparator uses a fixed 1.26V internal reference to support externally set thresholds via resistor dividers.
Unlike fixed-threshold variants, the MAX6416UK+T lacks manual reset (MR) and dual-voltage monitoring capability - it supports only single-voltage supervision via the adjustable RESET IN input and VCC supply monitoring, with reset assertion triggered by either falling below their respective thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Output Type | Active-high push-pull - drives high to µP reset pin without external pull-up, compatible with standard CMOS logic inputs |
| RESET IN Threshold | 1.205V to 1.305V (min/max over temp) - sets minimum detectable monitored voltage using external resistive divider |
| Supply Current | 1.7µA typ at VCC ≤ 2.0V - enables multi-year battery life in portable medical or sensor nodes |
| Reset Timeout Range | 275µs to >6ms - configurable via 0–15nF capacitor on SRT pin; 4.375ms typical at 1500pF |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive and industrial control environments |
| VCC Range | 1.0V to 5.5V - ensures valid reset assertion during deep brownout conditions down to 1V supply |
| AEC-Q100 Grade | Qualified per AEC-Q100 Rev H - meets automotive reliability and stress testing requirements for passenger safety systems |
Pinout & Package
SOT23-5 package (U5+2A outline), 5-pin surface-mount, RoHS-compliant lead-free (+T suffix), thermal resistance θJA = 255.9°C/W (multi-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull output | Drives µP reset pin high after timeout; sinks 500µA at VCC ≥ 2.7V with VOL ≤ 0.3V |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external capacitor (SRT-to-GND) |
| 3 - RESET IN | Adjustable threshold input | High-impedance node (10nA leakage) connected to center of R1/R2 divider; sets VMON_TH ≥ 1.26V |
| 4 - SRT | Reset timeout capacitor connection | 240nA precision current source charges external CSRT; determines tRP = (2.71×10⁶)×CSRT + 275µs |
| 5 - VCC | Power supply input | Supplies internal circuitry; also monitored for VCC reset threshold (factory-trimmed, not user-adjustable for MAX6416) |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable RESET IN threshold | Supports monitoring of any voltage ≥1.26V using two high-value resistors (e.g., 1MΩ/1MΩ for 2.52V threshold), minimizing standby current |
| Capacitor-programmable timeout | Enables precise match to µP's required reset hold time without firmware changes or BOM proliferation |
| AEC-Q100 qualification | Validated for automotive applications including engine control modules and ADAS sensors requiring extended temperature and reliability compliance |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during severe brownout - critical for fail-safe shutdown in safety-critical systems |
| Low quiescent current | 1.7µA typical at 2V supply enables >10-year battery life in always-on IoT endpoints with coin-cell power |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Infusion Pump |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply and 5V analog sensor rail in engine bay environment subject to wide temperature swings and load dump transients. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high reset to ARM Cortex-M7 MCU during VCC brownout or sensor rail collapse. Use Value: Prevents erratic code execution during cold cranking (VCC dip to 2.8V) by holding reset for 4.4ms until stable power resumes. | Use Scenario: Supervises lithium-ion battery-backed 1.8V MCU and 3.3V motor driver in handheld infusion device operating at body temperature. IC Role / Device Role / Timing Role: Adjustable RESET IN monitors battery voltage via resistor divider; asserts reset before undervoltage cutoff triggers pump stall. Use Value: Enables safe drug delivery interruption at 2.7V battery level using 1.26V internal reference and custom R1/R2 scaling. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Ensures deterministic startup of isolated RS-485 communication controller after 24V DC input stabilizes following factory power cycling. IC Role / Device Role / Timing Role: VCC supervisor with capacitor-set 5ms timeout guarantees µP reset remains asserted until auxiliary 3.3V LDO output settles. Use Value: Eliminates UART framing errors caused by premature µP boot before transceiver power rails are within spec. | Use Scenario: Monitors backup supercapacitor voltage (2.5V nominal) during main AC power loss to initiate graceful meter firmware save before shutdown. IC Role / Device Role / Timing Role: RESET IN configured for 2.1V threshold detects supercap depletion; SRT capacitor sets 3.5ms reset hold for EEPROM write completion. Use Value: Guarantees nonvolatile memory integrity during grid outage by synchronizing reset assertion with critical data commit timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6415UK+T | Identical pinout and function but features active-low push-pull RESET output | Requires inverted reset logic on µP side; incompatible with systems expecting active-high assertion | Select MAX6415UK+T only when host MCU reset pin is active-low and no level-shifting is feasible |
| TLV809KDBZR | Fixed 3.08V reset threshold, no adjustable input, no SRT timeout programming, 1.6µA ICC | Lacks dual-voltage or adjustable monitoring capability; suitable only for single-rail VCC supervision | Choose TLV809KDBZR for cost-sensitive, single-threshold applications where external resistor networks are undesirable |
Compared with MAX6415UK+T, the MAX6416UK+T provides native active-high reset signaling, eliminating need for external inverters; versus TLV809KDBZR, it enables flexible voltage monitoring down to 1.26V and field-adjustable timeout - critical for battery-fueled or multi-rail systems.
Availability
MAX6416UK+T is available at Aetrix Electronics and suitable for automotive ECUs, portable medical devices, industrial PLCs, smart energy meters, and battery-powered embedded controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6416UK+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 demanding industrial, automotive, and computing applications, with emphasis on power efficiency and reliability.
The MAX6412–MAX6420 family delivers ultra-low-power microprocessor supervision with flexible reset configuration - engineered specifically for safety-critical and battery-constrained systems needing robust brownout detection and programmable reset timing.
FAQ
What is the function of the SRT pin on the MAX6416UK+T?
The SRT pin on the MAX6416UK+T connects to an external capacitor that sets the reset timeout period. An internal 240nA current source charges this capacitor; reset deassertion occurs when its voltage reaches 0.65V. The formula tRP = (2.71 × 10⁶) × CSRT + 275µs defines the relationship, enabling precise timeout tuning from 275µs to over 6ms. This design avoids fixed delays and supports µP-specific timing requirements without firmware changes.
Does the MAX6416UK+T support manual reset functionality?
No, the MAX6416UK+T does not include a manual reset (MR) input. Unlike MAX6412–MAX6414 variants, it is designed exclusively for automatic reset generation based on VCC and RESET IN voltage monitoring. To implement manual reset, an external switch must be added in parallel with the R2 resistor of the RESET IN voltage divider - closing the switch pulls RESET IN to ground, triggering reset. This method is documented in Maxim's application notes for the MAX6415–MAX6420 series.
What is the minimum monitored voltage achievable with the MAX6416UK+T RESET IN pin?
The MAX6416UK+T RESET IN pin supports monitoring of voltages down to 1.26V, determined by its internal 1.26V reference threshold. Using the formula VMON_TH = 1.26V × (R1 + R2)/R2, designers can scale higher voltages - e.g., a 1MΩ/100kΩ divider yields a 13.86V threshold. The absolute lower limit remains 1.26V because the internal comparator compares RESET IN against this fixed reference; voltages below 1.26V cannot be reliably detected as the comparator output saturates.
How does the MAX6416UK+T ensure reliable operation during power supply transients?
The MAX6416UK+T incorporates power-supply transient immunity through built-in glitch rejection: it ignores negative-going VCC transients ≤75ns and requires ≥100mV overdrive below threshold to trigger reset for pulses <50µs. This behavior is characterized in the "Maximum Transient Duration vs. Reset Threshold Overdrive" graph. Combined with hysteresis (33mV typical), these features prevent false resets during switching noise or load-dump events common in automotive and industrial environments - ensuring only sustained brownouts assert the MAX6416UK+T reset signal.
Is the MAX6416UK+T pin-compatible with other devices in the MAX6412–MAX6420 family?
Yes, the MAX6416UK+T shares identical SOT23-5 pinout and footprint with all members of the MAX6412–MAX6420 family, including MAX6412UK+T, MAX6413UK+T, and MAX6418UK+T. Pin 1 is RESET, Pin 2 is GND, Pin 3 is RESET IN, Pin 4 is SRT, and Pin 5 is VCC across the entire series. However, functional compatibility depends on reset polarity (active-high vs. active-low), presence of MR input, and dual-monitoring capability - so while PCB layout is interchangeable, firmware and external circuitry may require revision when substituting between variants.
MAX6416UK+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6416UK+T FAQ
1.How can I place an order for MAX6416UK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6416UK+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 MAX6416UK+T reliable?
The price and inventory of MAX6416UK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6416UK+T is usually 5 days.
3.What payment methods are accepted for MAX6416UK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6416UK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6416UK+T?
MAX6416UK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6416UK+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 MAX6416UK+T?
For technical support, including MAX6416UK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6416UK+T requirements.
6.How does Aetrix verify that MAX6416UK+T is sourced from the original manufacturer or authorized distributors?
All MAX6416UK+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 MAX6416UK+T meets industry standards.
7.What is the process for return or replacement of MAX6416UK+T?
All MAX6416UK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6416UK+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 MAX6416UK+T part is unused and in its original packaging.
Return procedure for MAX6416UK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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