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Analog Devices Inc./Maxim Integrated MAX6842HUKD0+T
- Part No.:
- MAX6842HUKD0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6842HUKD0+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,390
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Product details
Overview
MAX6842HUKD0+T from Maxim Integrated is an ultra-low-voltage microprocessor supervisory circuit with factory-trimmed 1.313V reset threshold, active-high push-pull RESET output, active-low open-drain RESET output, 150µs timeout (voltage detector mode), and manual reset input - designed for reliable power monitoring in 0.9V–1.5V digital systems such as portable battery-powered controllers and telecom baseband processors.
For engineers reviewing the MAX6842HUKD0+T datasheet, MAX6842HUKD0+T pinout, MAX6842HUKD0+T application, or MAX6842HUKD0+T equivalent, key selection criteria include its dual-output configuration (push-pull + open-drain), guaranteed reset validity down to VCC = 0.55V, ±2.5% threshold accuracy over temperature, immunity to sub-150ns VCC transients, and SOT23-5 footprint compatibility with space-constrained embedded designs.
Technical Context
The MAX6842HUKD0+T implements a precision voltage comparator with hysteresis (0.75% of VTH) and a fixed 150µs timeout timer triggered on VCC falling below 1.313V or MR assertion. Its dual-reset architecture enables simultaneous interface to both standard CMOS reset inputs (via push-pull) and bidirectional µP reset I/Os (via open-drain with external pullup).
It features a 20kΩ internal MR pullup, 5.7µA typical supply current at 0.9V, and operates across -40°C to +85°C. The open-drain RESET output sinks up to 80µA at VCC ≥ 0.83V while maintaining VOL ≤ 0.2×VCC, supporting level-shifting to auxiliary supplies up to 6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.313V ±2.5% over temperature - ensures deterministic brownout detection in 1.3V core rails without external calibration. |
| Timeout Period | 150µs (voltage detector mode) - provides fast, glitch-immune reset assertion suitable for high-speed power sequencing. |
| Supply Current | 5.7µA (typ) at VCC = 0.9V - enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| Output Configuration | Active-high push-pull RESET + active-low open-drain RESET - supports direct drive of CMOS inputs and bidirectional µP reset pins without additional logic. |
| VCC Operating Range | 0.75V to 1.8V - monitors modern ultra-low-voltage SoC cores including ARM Cortex-M0+ and RISC-V MCU domains. |
| Reset Validity Limit | Guaranteed to VCC = 0.55V - maintains valid logic levels during deep brownout, preventing undefined µP states. |
| MR Glitch Rejection | 150ns - rejects EMI-induced noise on manual reset lines without external RC filtering. |
Pinout & Package
Package: 5-pin SOT23-5, 2.9mm × 1.6mm × 1.1mm body, lead-free (RoHS-compliant), tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low open-drain) | Sinks current when asserted; requires external pullup (0–6V); interfaces directly with bidirectional µP reset I/Os. |
| 2 | GND | Ground reference for all internal comparators and timing circuits; must be low-impedance connection to system ground plane. |
| 3 | RESET (active-high push-pull) | Drives high/low actively; compatible with standard CMOS reset inputs requiring no external components. |
| 4 | MR (active-low manual reset) | Internally pulled up to VCC (20kΩ); asserts reset when pulled ≤0.3×VCC; immune to <150ns glitches. |
| 5 | VCC | Monitored supply input (0.75–1.8V); powers internal circuitry and serves as reference for threshold accuracy and RESET IN (not present on MAX6842). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset outputs | Simultaneous active-high push-pull and active-low open-drain enable flexible interfacing - one drives standard logic, the other supports bidirectional µP reset I/Os without contention. |
| Factory-trimmed 1.313V threshold | Eliminates external resistor networks and calibration; ±2.5% accuracy over -40°C to +85°C ensures robust operation in industrial and telecom environments. |
| 150µs voltage detector timeout | Provides fastest available reset hold time in the family - ideal for systems requiring immediate recovery after transient dips, such as real-time DSP subsystems. |
| 0.55V minimum VCC operation | Ensures reset remains valid through deep undervoltage conditions where most µPs lose functional integrity - prevents latch-up or metastability in downstream logic. |
| 5.7µA supply current at 0.9V | Reduces quiescent power by >50% versus comparable supervisory ICs - critical for always-on sensor nodes and energy-harvesting applications. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters operating from single Li-ion cells with dynamic load-induced VCC sags. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during brownout events to prevent corrupted ADC readings or flash write corruption. Use Value: 150µs timeout ensures rapid recovery post-sag; dual outputs allow concurrent reset signaling to analog front-end and BLE radio subsystems. |
Use Scenario: DIN-rail mounted programmable logic controllers with isolated 3.3V I/O rails derived from 24V DC input. IC Role / Device Role / Timing Role: Monitoring 1.2V FPGA core supply and generating synchronized reset pulses to FPGA and ARM-based controller. Use Value: 1.313V threshold matches common 1.2V rail tolerances; open-drain output interfaces cleanly with opto-isolated reset distribution networks. |
| 5G Small Cell Baseband Processors | Automotive ADAS Camera ECUs |
Use Scenario: High-density RF front-end modules using multi-rail power sequencing with tight 1.3V core voltage tolerance. IC Role / Device Role / Timing Role: Voltage detector ensuring µP reset occurs before core voltage falls below functional specification limits. Use Value: ±2.5% threshold accuracy eliminates need for margining; 5.7µA quiescent current minimizes standby drain on backup supercapacitors. |
Use Scenario: Vision processing units powered from automotive 12V via buck converters delivering 1.0V/1.8V/3.3V rails under engine cranking conditions. IC Role / Device Role / Timing Role: Brownout supervisor for 1.0V image signal processor core, asserting reset during cold-crank voltage dips. Use Value: Immunity to 150ns VCC transients prevents false resets during ignition noise; SOT23-5 footprint fits constrained camera module PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6841HUKD0+T | Same 1.313V threshold and 150µs timeout, but features active-high + active-low push-pull outputs (no open-drain) | Lacks level-shifting capability; unsuitable for bidirectional µP reset I/Os or multi-supply reset distribution | Select when only push-pull drive is needed and board layout does not require open-drain flexibility |
| TPS3123E13DBVR | 1.33V threshold, 200ms timeout, single active-low push-pull output, 1.6µA supply current, SOT23-5 | Longer timeout limits use in fast-recovery systems; lower current benefits ultra-low-power designs but lacks dual-output versatility | Select for battery life–critical applications where 200ms reset hold is acceptable and dual outputs are unnecessary |
Compared with MAX6841HUKD0+T, the MAX6842HUKD0+T adds open-drain functionality for bidirectional reset control, while TPS3123E13DBVR trades dual outputs and fast timeout for ultra-low current - making MAX6842HUKD0+T optimal for designs needing both speed and interface flexibility in compact 1.3V systems.
Availability
MAX6842HUKD0+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and 5G small cell baseband processors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6842HUKD0+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6842HUKD0+T belongs to the MAX6841–MAX6845 ultra-low-voltage µP supervisory family, engineered specifically for reliable power monitoring in sub-1.5V digital systems where traditional reset ICs fail due to insufficient headroom.
FAQ
What is the exact reset threshold voltage of the MAX6842HUKD0+T?
The MAX6842HUKD0+T has a factory-trimmed reset threshold of 1.313V, with ±2.5% accuracy over the full -40°C to +85°C operating temperature range. This value is confirmed in the Threshold Suffix Guide (Table 1) where suffix "H" corresponds to 1.313V, and is validated in the Electrical Characteristics table under VTH parameter for MAX6842 devices.
Does the MAX6842HUKD0+T support manual reset functionality?
Yes, the MAX6842HUKD0+T includes a dedicated MR (manual reset) pin (Pin 4) with an internal 20kΩ pullup resistor to VCC. Pulling MR low forces an immediate reset assertion, which remains active for the full 150µs timeout period after MR returns high. The device also rejects transients shorter than 150ns on this pin, eliminating need for external debounce circuitry.
What are the output configurations available on the MAX6842HUKD0+T?
The MAX6842HUKD0+T provides two independent reset outputs: Pin 3 is an active-high push-pull RESET, and Pin 1 is an active-low open-drain RESET. The push-pull output drives high/low actively without external components, while the open-drain output requires an external pullup and supports level-shifting to voltages up to 6V - enabling interoperability with diverse µP reset architectures.
Can the MAX6842HUKD0+T operate down to 0.55V VCC?
Yes, the MAX6842HUKD0+T guarantees valid reset output behavior down to VCC = 0.55V for its active-low open-drain RESET (Pin 1), and down to VCC = 0.75V for its active-high push-pull RESET (Pin 3). This is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections, ensuring deterministic reset signaling during deep brownout conditions.
Is the MAX6842HUKD0+T pin-compatible with other members of the MAX6841–MAX6845 family?
Yes, all MAX6841–MAX6845 devices share identical 5-pin SOT23-5 pinouts and footprints, including the MAX6842HUKD0+T. Pin assignments (VCC, MR, GND, RESET, RESET) are consistent across the family, allowing drop-in substitution between variants - though output configurations and threshold options differ, so functional compatibility must be verified per application requirements.
MAX6842HUKD0+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:
- 1.313V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 150µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6842HUKD0+T FAQ
1.How can I place an order for MAX6842HUKD0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6842HUKD0+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 MAX6842HUKD0+T reliable?
The price and inventory of MAX6842HUKD0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6842HUKD0+T is usually 5 days.
3.What payment methods are accepted for MAX6842HUKD0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6842HUKD0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6842HUKD0+T?
MAX6842HUKD0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6842HUKD0+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 MAX6842HUKD0+T?
For technical support, including MAX6842HUKD0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6842HUKD0+T requirements.
6.How does Aetrix verify that MAX6842HUKD0+T is sourced from the original manufacturer or authorized distributors?
All MAX6842HUKD0+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 MAX6842HUKD0+T meets industry standards.
7.What is the process for return or replacement of MAX6842HUKD0+T?
All MAX6842HUKD0+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6842HUKD0+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 MAX6842HUKD0+T part is unused and in its original packaging.
Return procedure for MAX6842HUKD0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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