My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6347XR42-T
- Part No.:
- MAX6347XR42-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6347XR42-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,959
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6347XR42-T from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit that monitors VCC supply voltage and asserts a reset signal when voltage falls below 4.200V (±2.5% over temperature), maintaining reset for ≥100ms after recovery; it operates from 1.2V to 5.5V, draws ≤1.0µA at 3V, and is housed in a 3-pin SC70 package for space-constrained embedded power monitoring.
For engineers reviewing the MAX6347XR42-T datasheet, MAX6347XR42-T pinout, MAX6347XR42-T application, or MAX6347XR42-T equivalent, this device serves as a precision, ultra-low-power reset supervisor for 3.3V/5V systems requiring guaranteed reset assertion down to 1V supply, immunity to fast VCC transients, and factory-trimmed threshold stability across -40°C to +85°C.
Technical Context
The MAX6347XR42-T implements a precision bandgap-based reset comparator with 40ppm/°C tempco and 9.5mV hysteresis, ensuring stable threshold detection across industrial temperature range. Its active-high push-pull output drives high during reset assertion and low otherwise, eliminating external pull-up components.
It features built-in transient immunity-rejecting negative-going VCC glitches up to 200µs at 100mV overdrive-and guarantees correct logic state down to VCC = 1.2V. The reset timeout is internally timed to ≥100ms minimum, fully specified without external timing elements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.200V ±2.5% over -40°C to +85°C - ensures reliable brownout detection for 5V systems with margin against ripple. |
| Supply Current | ≤1.0µA at 3V - enables multi-year battery life in portable equipment without compromising supervision integrity. |
| Reset Timeout | 100ms to 280ms - guarantees sufficient processor initialization time after power stabilization. |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep brownout and compatibility with 2.5V/3.3V/5V rails. |
| Output Type | Active-high push-pull - provides direct drive capability without external pull-up, reducing BOM count and layout area. |
| Threshold Hysteresis | 9.5mV - prevents oscillatory reset toggling near threshold during slow-rising or noisy supply conditions. |
| Transient Immunity | Rejects ≤200µs negative VCC glitches at 100mV overdrive - eliminates false resets from switching noise or ESD coupling. |
Pinout & Package
MAX6347XR42-T is packaged in a 3-pin SC70-3 (X3-2 outline) surface-mount package measuring 2.0mm × 2.1mm × 0.95mm, optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output driver; must be low-impedance connection to system ground plane. |
| 2 (RESET) | Active-high push-pull reset output | Drives high during reset (VCC < 4.2V or during timeout); sinks 1.2mA/3.2mA at 3.2V/4.5V when low; no external pull-up required. |
| 3 (VCC) | Supply input | Monitored power rail input; accepts 1.2V–5.5V; includes internal ESD protection and transient filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.200V threshold | Guaranteed ±2.5% tolerance over full temperature range-eliminates manual calibration and improves production yield. |
| Ultra-low 1µA max supply current | Reduces standby power in always-on systems; enables use in coin-cell-powered IoT sensors and wearables. |
| 100ms minimum reset timeout | Ensures µP/µC completes internal initialization before release-no external RC timing network needed. |
| Push-pull active-high RESET | Direct interface with processors requiring high-true reset inputs (e.g., ARM Cortex-M, PIC, MSP430), simplifying schematic design. |
| VCC transient immunity | Immune to sub-200µs supply dips-prevents spurious resets in noisy industrial or automotive environments. |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Power cycling and brownout events in factory-floor control cabinets with fluctuating 24VDC-derived 5V rails. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM-based controller until 5V rail stabilizes above 4.2V for ≥100ms. Use Value: Prevents firmware corruption during unstable power-up by guaranteeing clean reset release only after sustained valid supply. |
Use Scenario: Multi-year deployment of environmental sensors powered by CR2032 coin cells with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Low-current reset monitor holding microcontroller in reset during shallow discharge below 4.2V threshold. Use Value: Extends usable battery life by enabling operation down to 1.2V VCC while consuming <1µA-no quiescent drain penalty. |
| Medical Diagnostic Handhelds | Network Edge Routers |
|
Use Scenario: Clinical-grade portable ultrasound units subject to rapid on/off cycles and EMI from adjacent RF modules. IC Role / Device Role / Timing Role: Immune reset supervisor rejecting fast VCC transients while asserting reliable reset during power-down sequences. Use Value: Eliminates false resets caused by switching regulator noise or RF coupling-ensuring deterministic boot behavior. |
Use Scenario: Fanless enterprise routers with tightly regulated 3.3V and 5V rails where reset timing must meet IEEE 802.3 compliance windows. IC Role / Device Role / Timing Role: Precision reset generator releasing FPGA and PHY controllers synchronously after 100ms power stabilization. Use Value: Meets strict power-on sequencing requirements without external timing components-reducing board area and cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6327XR42-T | Same 4.200V threshold and SC70-3 package, but belongs to legacy MAX632x series with identical electrical specs and 1µA ICC. | No functional difference; MAX6327XR42-T shares same pinout, timing, and thermal performance-suitable for legacy-design refresh. | Select MAX6327XR42-T if sourcing legacy-qualified inventory or matching existing BOMs with MAX632x family references. |
| TPS3808G33DBVR | TI part with 3.3V threshold (not 4.2V); 350nA typical ICC; open-drain output; requires external pull-up; different pinout (VDD/EN/GND). | Not a direct replacement due to mismatched threshold, output type, and pin assignment-requires schematic and layout changes. | Choose TPS3808G33DBVR only for new 3.3V-specific designs prioritizing ultra-low ICC over threshold accuracy or push-pull drive. |
Compared with MAX6347XR42-T, MAX6327XR42-T offers identical functionality and drop-in compatibility, while TPS3808G33DBVR serves a different voltage class and interface architecture-making MAX6327XR42-T the only true alternative for 4.2V active-high reset needs in SC70-3.
Availability
MAX6347XR42-T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, medical handheld diagnostics, and network edge routers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6347XR42-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 industrial, communications, and consumer applications with emphasis on reliability and integration.
The MAX6347XR42-T belongs to the MAX63xx ultra-low-power µP supervisory family, engineered specifically for robust, zero-component reset generation in space- and power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6347XR42-T?
The MAX6347XR42-T has a factory-trimmed nominal reset threshold of 4.200V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in Table 1 of the datasheet under suffix "R42", and applies specifically to the MAX6347 variant with active-high push-pull output. The MAX6347XR42-T maintains this specification without external calibration.
Does the MAX6347XR42-T require any external components to function?
No, the MAX6347XR42-T requires no external components for basic reset supervision. Its internal precision comparator, timer, and push-pull driver eliminate the need for external resistors, capacitors, or pull-up networks. The only connections needed are VCC, GND, and the RESET output-enabling minimal footprint and simplified layout for the MAX6347XR42-T.
What is the maximum supply voltage the MAX6347XR42-T can tolerate?
The MAX6347XR42-T supports a VCC operating range of 1.2V to 5.5V, with absolute maximum rating of +6V. It remains fully functional and asserts correct reset state down to 1.2V, and its internal circuitry is protected against transient overvoltage up to 6V per Absolute Maximum Ratings. This makes the MAX6347XR42-T suitable for both 3.3V and 5V system rails.
How does the MAX6347XR42-T handle fast power-supply transients?
The MAX6347XR42-T incorporates proprietary transient immunity circuitry that rejects negative-going VCC glitches up to 200µs in duration when the overdrive (VTH − VCC) is 100mV. This is documented in the Typical Operating Characteristics graph "Maximum Transient Duration vs. Reset Threshold Overdrive". As a result, the MAX6347XR42-T avoids false resets caused by switching noise or ESD-induced supply dips.
Is the MAX6347XR42-T pin-compatible with older Maxim reset supervisors?
Yes, the MAX6347XR42-T is pin-compatible with the MAX6327XR42-T and shares identical SC70-3 pinout (GND, RESET, VCC), same electrical timing, and identical thermal characteristics. It is also functionally compatible with MAX809/MAX810 in push-pull configurations, though those devices use SOT23-3 and differ in threshold options-so MAX6347XR42-T offers direct upgrade path within SC70 footprint.
MAX6347XR42-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.2V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6347XR42-T FAQ
1.How can I place an order for MAX6347XR42-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6347XR42-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 MAX6347XR42-T reliable?
The price and inventory of MAX6347XR42-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6347XR42-T is usually 5 days.
3.What payment methods are accepted for MAX6347XR42-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6347XR42-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6347XR42-T?
MAX6347XR42-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6347XR42-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 MAX6347XR42-T?
For technical support, including MAX6347XR42-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6347XR42-T requirements.
6.How does Aetrix verify that MAX6347XR42-T is sourced from the original manufacturer or authorized distributors?
All MAX6347XR42-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 MAX6347XR42-T meets industry standards.
7.What is the process for return or replacement of MAX6347XR42-T?
All MAX6347XR42-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6347XR42-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 MAX6347XR42-T part is unused and in its original packaging.
Return procedure for MAX6347XR42-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6347XR42-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…
