My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6418UK16+T
- Part No.:
- MAX6418UK16+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6418UK16+T.pdf
- Description:
- IC RESET MPU LOW PWR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,055
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6418UK16+T from Maxim Integrated is a low-power dual-voltage microprocessor supervisor IC with one factory-trimmed VCC reset threshold (1.575V, ±2.5%) and one adjustable RESET IN input (1.26V threshold) for monitoring two independent supply rails. It features an active-low push-pull RESET output, capacitor-adjustable reset timeout (275µs to 5.75ms), manual reset capability via MR pin, and operates across –40°C to +125°C in automotive and industrial embedded systems.
For engineers reviewing the MAX6418UK16+T datasheet, MAX6418UK16+T pinout, MAX6418UK16+T application, or MAX6418UK16+T equivalent, key selection criteria include dual-rail voltage monitoring capability, guaranteed RESET validity down to VCC = 1V, ultra-low quiescent current (1.7µA typ at 1.8V), SOT23-5 package compatibility, and AEC-Q100 qualification for automotive use cases.
Technical Context
The MAX6418UK16+T integrates a precision bandgap reference, high-impedance adjustable comparator for external resistor-divider–based voltage monitoring (RESET IN), and a factory-laser-trimmed VCC threshold comparator. Its reset timeout is generated by a 240nA internal current source charging an external capacitor on the SRT pin, with deassertion triggered when the ramp reaches 0.65V.
It supports dual-supply supervision: VCC is monitored against a fixed 1.575V threshold (suffix "16"), while RESET IN monitors an externally set voltage ≥1.26V using R1/R2 divider. The active-low push-pull RESET output drives µP reset inputs directly without pull-up resistors and remains asserted for the full timeout after all fault conditions clear.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.575V ±2.5% over –40°C to +125°C - ensures reliable brownout detection for 1.6V–5V supplies |
| RESET IN Threshold | 1.26V ±33mV hysteresis - enables precise external rail monitoring down to 1.26V with resistor-divider scaling |
| Quiescent Current | 1.7µA typical at VCC = 1.8V - minimizes battery drain in portable and always-on systems |
| Reset Timeout Range | 275µs to 5.75ms (CSRT = 0F to 1500pF) - configurable delay meets diverse µP reset timing requirements |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| RESET Output Type | Active-low push-pull - eliminates need for external pull-up; sinks 3.2mA at VCC ≥ 4.5V |
| Supply Voltage Range | 1.0V to 5.5V - guarantees valid RESET assertion even during deep brownout conditions |
Pinout & Package
SOT23-5 package (U5+2A outline, RoHS-compliant, 5-pin surface-mount). Thermal resistance θJA = 255.9°C/W on multi-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset input directly; logic low during fault or timeout; no external pull-up required |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external capacitor (SRT) |
| 3 - RESET IN | Adjustable reset comparator input | High-impedance node for external resistor-divider; sets second monitored voltage threshold ≥1.26V |
| 4 - SRT | Set reset timeout input | Connects to external capacitor (CSRT); 240nA current source charges it to generate precise timeout period |
| 5 - VCC | Supply voltage and fixed-threshold monitor input | Powers device and feeds internal 1.575V comparator; valid operation from 1.0V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage supervision | Simultaneously monitors VCC (1.575V fixed) and external rail (adjustable ≥1.26V) - eliminates need for two discrete supervisors |
| Capacitor-programmable timeout | External CSRT sets delay from 275µs to 5.75ms with <±10% tolerance - replaces fixed-delay ICs and simplifies BOM |
| Guaranteed RESET down to VCC = 1V | Valid logic level maintained even during severe brownout - prevents spurious µP release before stable power |
| AEC-Q100 qualified | Qualified per AEC-Q100 Rev H for automotive applications - supports under-hood and ADAS subsystems |
| Low-leakage RESET IN | 10nA max input leakage - enables use of MΩ-range divider resistors, minimizing standby current in battery systems |
Applications
| Automotive Engine Control Unit (ECU) | Medical Infusion Pump Controller |
|---|---|
Use Scenario: Monitors both 3.3V microcontroller supply and 5V analog sensor rail in engine ECU, asserting reset if either drops below threshold during cold cranking. IC Role / Device Role / Timing Role: Dual-rail supervisor providing synchronized reset pulse with programmable hold time to ensure deterministic µP restart after voltage recovery. Use Value: Prevents firmware corruption during transient undervoltage events; AEC-Q100 qualification ensures reliability in harsh thermal/vibration environments. | Use Scenario: Supervises 1.8V MCU core voltage and 3.3V motor driver supply in battery-powered infusion pump, triggering safe shutdown on low-battery brownout. IC Role / Device Role / Timing Role: Low-quiescent-current dual-supply monitor with manual reset override for service mode; timeout configured for 4.375ms to match pump controller boot sequence. Use Value: Extends battery life via 1.7µA typical ICC; adjustable RESET IN allows precise 1.26V×(R1+R2)/R2 threshold setting for custom rail voltages. |
| Industrial PLC I/O Module | Portable Test Equipment |
Use Scenario: Ensures robust startup and fault recovery in DIN-rail mounted PLC module exposed to wide ambient temperature swings (–40°C to +85°C). IC Role / Device Role / Timing Role: High-temperature supervisor with –40°C to +125°C rating; RESET output drives isolated reset chain via optocoupler or digital isolator. Use Value: Eliminates need for external pull-up on RESET; push-pull drive ensures fast edge rates into capacitive loads across full temperature range. | Use Scenario: Provides fail-safe reset for ARM Cortex-M based handheld tester operating from single-cell Li-ion (2.7V–4.2V) and regulated 1.2V core rail. IC Role / Device Role / Timing Role: Dual-threshold supervisor with VCC = 2.7V monitored against 1.575V and 1.2V rail monitored via RESET IN (set to 1.26V × (R1+R2)/R2 ≈ 1.2V). Use Value: SOT23-5 footprint saves PCB space; 1.7µA ICC extends runtime between charges; MR pin enables user-initiated self-test reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6419UK16+T | Active-high push-pull RESET output instead of active-low | Requires µP with active-high reset input; incompatible with active-low-only processors | Select when system architecture mandates active-high reset assertion |
| TPS3808G16DBVR | Fixed 1.6V VDD threshold only; no adjustable RESET IN input; 3.5µA ICC (vs. 1.7µA) | Single-rail supervision only; cannot monitor dual supplies without additional components | Choose for cost-sensitive single-supply designs where dual monitoring is unnecessary |
Compared with MAX6419UK16+T, the MAX6418UK16+T provides native active-low reset drive for legacy µPs, while TPS3808G16DBVR lacks dual-rail capability entirely-making MAX6418UK16+T the only option among the three that delivers true dual-voltage supervision with ultra-low ICC and AEC-Q100 compliance.
Availability
MAX6418UK16+T is available at Aetrix Electronics and suitable for automotive engine control units, medical infusion pumps, industrial PLC modules, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6418UK16+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 medical applications.
The MAX6412–MAX6420 family was engineered specifically for reliable microprocessor supervision in safety-critical dual-rail systems, emphasizing ultra-low power, wide temperature operation, and flexible reset timing.
FAQ
What is the exact VCC reset threshold voltage for MAX6418UK16+T?
The MAX6418UK16+T has a factory-trimmed VCC reset threshold of 1.575V, with ±1.25% accuracy at +25°C and ±2.5% over the full –40°C to +125°C operating range. This value is defined by the "16" suffix per Maxim's Reset Voltages Suffix Table and is laser-trimmed during production for high precision.
How do I configure the adjustable RESET IN input on MAX6418UK16+T?
To configure the adjustable RESET IN input on MAX6418UK16+T, connect an external resistor divider (R1 and R2) between VCC and GND, with the midpoint tied to the RESET IN pin. Use VRST = 1.26V and the formula VMON_TH = 1.26 × (R1 + R2)/R2 to set the desired threshold; for example, R2 = 1MΩ and R1 = 252kΩ yields ~1.575V.
What capacitor value gives a 4.375ms reset timeout for MAX6418UK16+T?
A 1500pF capacitor (CSRT) between SRT and GND yields a nominal 4.375ms reset timeout for MAX6418UK16+T, as specified in the Electrical Characteristics table under tRP conditions. The relationship is linear: tRP = (2.71 × 10⁶) × CSRT + 275µs, so CSRT = (tRP − 275µs) / 2.71 × 10⁶.
Is MAX6418UK16+T compatible with 1.0V supply operation?
Yes, MAX6418UK16+T operates with VCC as low as 1.0V and guarantees valid RESET output behavior down to this level. The RESET output remains functional and logic-defined (active-low) even at VCC = 1.0V, enabling robust brownout protection in ultra-low-voltage systems.
Does MAX6418UK16+T require an external pull-up resistor on the RESET pin?
No, MAX6418UK16+T does not require an external pull-up resistor on the RESET pin because it features an active-low push-pull output stage. The internal driver actively pulls RESET low during assertion and high during deassertion, eliminating reliance on external components for logic-level integrity.
MAX6418UK16+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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.575V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6418UK16+T FAQ
1.How can I place an order for MAX6418UK16+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6418UK16+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 MAX6418UK16+T reliable?
The price and inventory of MAX6418UK16+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6418UK16+T is usually 5 days.
3.What payment methods are accepted for MAX6418UK16+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6418UK16+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6418UK16+T?
MAX6418UK16+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6418UK16+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 MAX6418UK16+T?
For technical support, including MAX6418UK16+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6418UK16+T requirements.
6.How does Aetrix verify that MAX6418UK16+T is sourced from the original manufacturer or authorized distributors?
All MAX6418UK16+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 MAX6418UK16+T meets industry standards.
7.What is the process for return or replacement of MAX6418UK16+T?
All MAX6418UK16+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6418UK16+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 MAX6418UK16+T part is unused and in its original packaging.
Return procedure for MAX6418UK16+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6418UK16+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
