My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6842GUKD4-T
- Part No.:
- MAX6842GUKD4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6842GUKD4-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6842GUKD4-T 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, and manual reset input - designed for reliable power monitoring in portable +1.2V digital systems.
For engineers reviewing the MAX6842GUKD4-T datasheet, MAX6842GUKD4-T pinout, MAX6842GUKD4-T application, or MAX6842GUKD4-T equivalent, this page delivers verified pin functions, exact timeout and threshold specs, SOT23-5 package details, real-world use cases in battery-powered equipment, and two validated alternative parts with documented functional differences.
Technical Context
The MAX6842GUKD4-T integrates a precision voltage comparator with ±2.5% threshold accuracy over temperature, debounced manual reset (MR) with 20kΩ internal pullup, and fixed 1.68s timeout after VCC recovery or MR release. Its dual-output architecture supports both active-high push-pull and active-low open-drain signaling on separate pins.
It operates across 0.75V–1.8V supply range, guarantees valid reset assertion down to VCC = 0.55V (active-low), and rejects fast transients via built-in glitch immunity - with MR pulse rejection of 150ns and VCC transient immunity up to 600mV overdrive for ≤1µs pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.110V ±2.5% - factory-trimmed for stable monitoring of +1.2V core supplies without external resistors. |
| Reset Timeout Period | 1.68s typical - ensures full system initialization before release in low-power wake-up sequences. |
| Supply Current | 7.3µA at 1.5V - enables multi-year operation in coin-cell–powered instrumentation. |
| Output Types | Active-high push-pull RESET and active-low open-drain RESET - supports bidirectional µP reset I/O and level-shifting to auxiliary rails. |
| VCC Operating Range | 0.75V to 1.8V - compatible with modern sub-1.5V logic families including LPDDR I/O and ARM Cortex-M0+ cores. |
| MR Input Logic | CMOS-compatible with 0.3×VCC/0.7×VCC thresholds - accepts direct connection to FPGA I/O or microcontroller GPIO without level translation. |
| Reset Validity Limit | Guaranteed to VCC = 0.55V (active-low output) - maintains deterministic reset state during deep brownout conditions. |
Pinout & Package
Package: 5-pin SOT23-5, surface-mount, lead-free (RoHS-compliant), footprint compatible with JEDEC MO-178AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low open-drain) | Drives low during reset; requires external pullup to any rail (0–VCC); interfaces directly with bidirectional µP reset pins. |
| 2 | GND | Power ground reference for all internal comparators and logic; must be connected to system ground plane. |
| 3 | RESET (active-high push-pull) | Drives high during reset; sinks current when inactive; eliminates need for external pullup in standard µP reset configurations. |
| 4 | MR (manual reset input) | Active-low input with 20kΩ internal pullup to VCC; debounced internally; accepts momentary switch to GND without external RC. |
| 5 | VCC | Monitored supply input; powers internal circuitry and sets reference for reset threshold detection. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.11V threshold | Eliminates external resistor network and calibration effort for +1.2V core supply monitoring. |
| Dual independent reset outputs | Enables simultaneous reset signaling to primary µP (via push-pull) and secondary logic (via open-drain level-shifted rail). |
| 1.68s timeout period | Meets extended power-up sequencing requirements for flash memory initialization and PLL lock in embedded controllers. |
| 5.7µA typical supply current | Reduces quiescent power by >90% vs. legacy reset ICs, critical for always-on sensor nodes and wearables. |
| Immunity to VCC transients | Rejects <150ns glitches up to 600mV below threshold - prevents spurious resets in noisy DC/DC converter environments. |
Applications
| Portable Medical Sensors | Battery-Powered IoT Nodes |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises 1.2V LDO output powering MCU and analog front-end; asserts reset until stable post-wake. Use Value: 1.68s timeout ensures ADC reference settles and sensor biasing completes before firmware execution begins. |
Use Scenario: LoRaWAN end-node with deep-sleep duty cycle and cold-start from storage capacitor. IC Role / Device Role / Timing Role: Monitors 1.1V buck converter output; provides clean reset pulse after capacitor recharge to ≥1.11V. Use Value: Factory-trimmed 1.11V threshold matches nominal LDO output, avoiding false resets during slow ramp-up. |
| Industrial Handheld Terminals | Low-Power Edge AI Modules |
Use Scenario: Ruggedized barcode scanner operating from 3.7V Li-ion with 1.2V core rail generated by buck converter. IC Role / Device Role / Timing Role: Dual-output configuration drives active-high reset to main SoC and active-low reset to secure element via shared pullup. Use Value: Open-drain output enables safe reset coordination between isolated security IC and host processor without voltage conflict. |
Use Scenario: TinyML inference module using ARM Cortex-M4F with 1.1V core and 1.8V I/O, powered from single-cell LiPo. IC Role / Device Role / Timing Role: Detects brownout on 1.1V core rail; holds reset until full recovery to prevent corrupted neural net weight loading. Use Value: Guaranteed reset validity down to VCC = 0.55V ensures deterministic fail-safe behavior even during rapid discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6842GUKD3-T | Same 1.11V threshold but 210ms timeout (vs. 1.68s) | Suitable for faster-booting MCUs where extended initialization is unnecessary | Select when system boot sequence completes within 250ms and lower standby current is prioritized |
| TPS3123E11DBVR | 1.11V threshold, 200ms timeout, 1.6V–5.5V VCC range, single push-pull output | Lacks dual-output capability and sub-1V operation; requires higher VCC minimum | Choose only if board space allows SOT23-6 and system VCC never drops below 1.6V |
Compared with MAX6842GUKD4-T, the MAX6842GUKD3-T reduces timeout by 90% for rapid-recovery systems, while the TPS3123E11DBVR trades dual-output flexibility and ultra-low-voltage operation for broader supply range and TI's long-term availability assurance.
Availability
MAX6842GUKD4-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT nodes, industrial handheld terminals, low-power edge AI modules, and telecom baseband subsystems requiring stable component supply across extended product lifecycles.
Supply support for MAX6842GUKD4-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 power, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6842GUKD4-T belongs to the MAX6841–MAX6845 family of ultra-low-voltage µP supervisors - engineered specifically for reliable reset generation in sub-1.5V digital systems where traditional reset ICs fail to operate.
FAQ
What is the exact reset threshold voltage of the MAX6842GUKD4-T?
The MAX6842GUKD4-T has a factory-trimmed reset threshold of 1.110V with ±2.5% accuracy over temperature (–40°C to +85°C). This value is fixed and non-adjustable, as confirmed in the Threshold Suffix Guide (suffix 'G') and Electrical Characteristics table. The MAX6842GUKD4-T does not include a RESET IN pin, so threshold adjustment is not supported.
Does the MAX6842GUKD4-T support operation below 1.0V?
Yes, the MAX6842GUKD4-T operates down to VCC = 0.75V and guarantees valid reset assertion down to VCC = 0.55V for its active-low open-drain output. This enables use with emerging ultra-low-voltage logic families and energy-harvesting power sources where supply rails dip below 1.0V during startup or brownout.
How does the 1.68s reset timeout of the MAX6842GUKD4-T affect system boot timing?
The MAX6842GUKD4-T asserts reset for a fixed 1.68s (typical) period after VCC rises above 1.11V or after MR is released. This ensures sufficient time for power supply stabilization, clock oscillator startup, and memory initialization before releasing the µP from reset - critical for systems with slow-ramping LDOs or external crystal oscillators.
Can the MAX6842GUKD4-T's two reset outputs be used simultaneously?
Yes, the MAX6842GUKD4-T provides independent active-high push-pull RESET and active-low open-drain RESET outputs. They share the same reset trigger condition (VCC < 1.11V or MR low) but drive different pins, enabling concurrent reset signaling to multiple devices - for example, a main µP and a companion security IC - without external logic.
Is the manual reset input (MR) of the MAX6842GUKD4-T debounced internally?
Yes, the MAX6842GUKD4-T includes fully integrated debounce for the MR input, rejecting glitches as short as 150ns. No external RC filter is required - a simple momentary switch from MR to GND suffices. The internal 20kΩ pullup resistor ensures MR remains high when unconnected, eliminating floating-input risk.
MAX6842GUKD4-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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-T FAQ
1.How can I place an order for MAX6842GUKD4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6842GUKD4-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 MAX6842GUKD4-T reliable?
The price and inventory of MAX6842GUKD4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6842GUKD4-T is usually 5 days.
3.What payment methods are accepted for MAX6842GUKD4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6842GUKD4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6842GUKD4-T?
MAX6842GUKD4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6842GUKD4-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 MAX6842GUKD4-T?
For technical support, including MAX6842GUKD4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6842GUKD4-T requirements.
6.How does Aetrix verify that MAX6842GUKD4-T is sourced from the original manufacturer or authorized distributors?
All MAX6842GUKD4-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 MAX6842GUKD4-T meets industry standards.
7.What is the process for return or replacement of MAX6842GUKD4-T?
All MAX6842GUKD4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6842GUKD4-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 MAX6842GUKD4-T part is unused and in its original packaging.
Return procedure for MAX6842GUKD4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6842GUKD4-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…
