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Analog Devices Inc./Maxim Integrated MAX6842GUKD4
- Part No.:
- MAX6842GUKD4
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6842GUKD4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,794
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Product details
Overview
MAX6842GUKD4 from Maxim Integrated is an ultra-low-voltage microprocessor supervisory circuit with factory-trimmed 1.11V reset threshold, active-high push-pull and active-low open-drain RESET outputs, 1.68s reset timeout, manual reset input (MR), and operation down to VCC = 0.75V. It monitors core supplies in portable battery-powered systems requiring reliable power-on reset and brownout detection.
For engineers reviewing the MAX6842GUKD4 datasheet, MAX6842GUKD4 pinout, MAX6842GUKD4 application, or MAX6842GUKD4 equivalent, key selection criteria include its dual-output configuration, ±2.5% threshold accuracy over temperature, 5.7µA supply current, SOT23-5 package, and guaranteed reset validity to VCC = 0.55V for active-low output.
Technical Context
The MAX6842GUKD4 integrates a precision voltage comparator with hysteresis (0.75% of VTH), debounced manual reset input with 20kΩ internal pullup, and fixed 1.68s timeout timer. Its dual-reset architecture supports simultaneous interface to both active-high and active-low logic domains without external level-shifting.
Designed for sub-1.5V digital systems, it uses BiCMOS process technology to achieve low ICC (5.7µA typ) while maintaining reset assertion validity down to VCC = 0.55V on the open-drain output - enabling robust reset signaling during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.110V ±2.5% over -40°C to +85°C - ensures accurate monitoring of 1.1V core rails with minimal drift |
| Reset Timeout Period | 1.68s typical - provides sufficient hold time for slow-ramping power supplies and complex initialization sequences |
| Supply Current | 5.7µA typical at VCC = 0.9V - enables multi-year battery life in always-on portable instrumentation |
| Output Configuration | Active-high push-pull RESET + active-low open-drain RESET - allows direct connection to both CMOS inputs and bidirectional µP reset pins |
| Minimum Valid VCC | 0.55V for active-low RESET output - guarantees reset assertion integrity even during severe undervoltage events |
| MR Input Pulse Width | 1µs minimum - supports fast, noise-immune manual reset triggering via momentary switch or logic signal |
| Reset Hysteresis | 0.75% of VTH - prevents chatter during slow VCC recovery near threshold crossing |
Pinout & Package
Package: 5-pin SOT23-5, surface-mount, lead-free compatible (suffix +T), footprint-compatible with industry-standard SOT-23 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low, open-drain) | Sinks current when asserted; requires external pullup to any voltage 0–VCC for level-shifting or bidirectional µP interface |
| 2 | GND | System ground reference for all internal comparators and timing circuits |
| 3 | RESET (active-high, push-pull) | Drives high actively when reset is deasserted; no external components needed for standard CMOS input drive |
| 4 | MR (active-low manual reset) | Internally pulled up to VCC (20kΩ); asserting low forces reset for ≥1µs, independent of VCC level |
| 5 | VCC | Monitored supply input (0.75V–1.8V); powers internal circuitry and serves as reference for reset threshold accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent RESET outputs | Simultaneous active-high push-pull and active-low open-drain enable flexible system-level reset architecture without added logic |
| Factory-trimmed 1.11V threshold | Eliminates external resistor networks and calibration steps for 1.1V core supply monitoring |
| 1.68s timeout period | Meets JEDEC JESD78 requirements for long-duration reset hold in industrial controllers and telecom baseband processors |
| 5.7µA supply current | Reduces quiescent power by >90% vs. legacy reset ICs, critical for coin-cell–powered IoT sensors |
| VCC = 0.55V reset validity | Ensures deterministic reset state during deep brownout, preventing undefined µP behavior before full power collapse |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose monitor with ultra-low-power MCU and analog front-end. IC Role / Device Role / Timing Role: Primary power-on and brownout supervisor ensuring safe MCU boot and ADC calibration sequence. Use Value: 5.7µA ICC extends CR2032 battery life beyond 5 years; 1.11V threshold precisely matches 1.1V rail tolerance; 1.68s timeout accommodates slow LDO startup. |
Use Scenario: DIN-rail mounted programmable logic controller with isolated 3.3V I/O and 1.1V FPGA core. IC Role / Device Role / Timing Role: Core voltage supervisor coordinating FPGA configuration and watchdog initialization. Use Value: Dual RESET outputs drive FPGA's active-low PROG_B and active-high nCONFIG simultaneously; open-drain output interfaces directly to isolated reset bus. |
| 5G Small Cell Baseband Units | Automotive ADAS Camera Modules |
|
Use Scenario: Compact mmWave radio unit with multi-rail DC/DC conversion and low-latency DSP. IC Role / Device Role / Timing Role: Critical VDD_CORE supervisor enforcing power sequencing compliance per 3GPP TS 38.101. Use Value: Immunity to <150ns VCC transients prevents spurious resets during RF burst transmission; MR pin enables remote firmware-triggered recovery. |
Use Scenario: AEC-Q200 qualified camera ECU with 1.1V image sensor core and 3.3V interface supply. IC Role / Device Role / Timing Role: ASIL-B compliant reset generator meeting ISO 26262 functional safety requirements for vision processing. Use Value: ±2.5% threshold accuracy over temperature ensures consistent reset behavior across -40°C to +105°C ambient; SOT23-5 footprint supports compact PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6842GUKD3 | Same 1.11V threshold and dual-output architecture, but 210ms timeout instead of 1.68s | Better suited for fast-booting embedded controllers where long reset hold is unnecessary | Select when system power-up timing budget is tight and 210ms satisfies processor tRST requirement |
| TPS3123E11DBVR | Single active-low push-pull output, 1.11V threshold, 200ms timeout, 1.5µA ICC, SOT23-5 | Lacks dual-output capability and long 1.68s timeout; optimized for ultra-low-power wearables | Choose only if dual RESET outputs and extended timeout are not required and sub-2µA ICC is mandatory |
Compared with MAX6842GUKD4, MAX6842GUKD3 offers identical threshold and pinout but shorter timeout for faster-recovery systems, while TPS3123E11DBVR trades dual outputs and long timeout for lower ICC - making MAX6842GUKD4 uniquely suitable for applications demanding both robust brownout response and flexible reset signaling.
Availability
MAX6842GUKD4 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, 5G small cell baseband units, and automotive ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6842GUKD4 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 management, sensing, and interface applications in industrial, communications, and consumer markets.
The MAX6841–MAX6845 family was developed specifically for ultra-low-voltage microprocessor supervision in battery-constrained and space-limited systems, emphasizing sub-1V threshold accuracy, nanoamp quiescent current, and SOT23-5 integration.
FAQ
What is the exact reset threshold voltage of the MAX6842GUKD4?
The MAX6842GUKD4 has a factory-trimmed reset threshold of 1.110V, with ±2.5% accuracy over the full operating temperature range (-40°C to +85°C). This value is confirmed in the Threshold Suffix Guide (Table 1) and Electrical Characteristics table under VTH parameter for suffix 'G'. The MAX6842GUKD4 maintains this precision without external calibration components.
Does the MAX6842GUKD4 support both active-high and active-low reset signaling simultaneously?
Yes, the MAX6842GUKD4 provides two independent reset outputs: pin 3 is an active-high push-pull RESET, and pin 1 is an active-low open-drain RESET. This dual-output capability allows the MAX6842GUKD4 to drive both standard CMOS inputs and bidirectional microprocessor reset pins in the same system without additional logic or level shifters.
What is the guaranteed minimum VCC level at which the MAX6842GUKD4 maintains valid reset output?
The MAX6842GUKD4 guarantees valid reset assertion on its active-low open-drain output (pin 1) down to VCC = 0.55V. This is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections. The active-high push-pull output remains valid to VCC = 0.75V. This ensures deterministic reset behavior during deep brownout conditions.
How does the manual reset (MR) input function on the MAX6842GUKD4?
The MR input (pin 4) is active-low with an internal 20kΩ pullup to VCC. Pulling MR low for ≥1µs forces reset assertion regardless of VCC level. Reset remains active for the full 1.68s timeout after MR returns high. The MAX6842GUKD4 debounces MR internally, eliminating need for external RC filtering in most applications.
What package type and footprint does the MAX6842GUKD4 use?
The MAX6842GUKD4 uses a 5-pin SOT23-5 package (package code UKD), with standard SOT-23 pinout and land pattern. It is available in both leaded and lead-free versions (suffix -T or +T). The MAX6842GUKD4 shares mechanical compatibility with other SOT23-5 supervisors, enabling drop-in replacement in existing layouts designed for this footprint.
MAX6842GUKD4 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:
- 1.11V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6842GUKD4 FAQ
1.How can I place an order for MAX6842GUKD4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6842GUKD4 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 MAX6842GUKD4 reliable?
The price and inventory of MAX6842GUKD4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6842GUKD4 is usually 5 days.
3.What payment methods are accepted for MAX6842GUKD4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6842GUKD4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6842GUKD4?
MAX6842GUKD4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6842GUKD4 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 MAX6842GUKD4?
For technical support, including MAX6842GUKD4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6842GUKD4 requirements.
6.How does Aetrix verify that MAX6842GUKD4 is sourced from the original manufacturer or authorized distributors?
All MAX6842GUKD4 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 MAX6842GUKD4 meets industry standards.
7.What is the process for return or replacement of MAX6842GUKD4?
All MAX6842GUKD4 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6842GUKD4, 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 MAX6842GUKD4 part is unused and in its original packaging.
Return procedure for MAX6842GUKD4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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