My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6307UK44D3+
- Part No.:
- MAX6307UK44D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6307UK44D3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,270
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6307UK44D3+ from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set at 4.4V ±2.5%), an adjustable undervoltage input (RST IN), and an adjustable overvoltage input (OVRST IN) to assert an active-low push/pull RESET output. It features a 140ms minimum reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1V. It is used in multivoltage embedded systems requiring reliable power-on and brownout reset control.
For engineers reviewing the MAX6307UK44D3+ datasheet, MAX6307UK44D3+ pinout, MAX6307UK44D3+ application, or MAX6307UK44D3+ equivalent, key selection considerations include its dual external reset inputs (RST IN/OVRST IN), factory-trimmed 4.4V VCC threshold, 140ms timeout, push/pull output drive capability, and immunity to fast VCC transients up to 280µs at 4.4V overdrive.
Technical Context
The MAX6307UK44D3+ implements a triple-monitor architecture: internal factory-trimmed resistor divider for VCC supervision at 4.4V nominal, external resistor-divider–based comparator for RST IN (undervoltage), and another for OVRST IN (overvoltage), all referenced to a 1.23V internal bandgap. Its push/pull RESET output sources/sinks ≥1.2mA at VCC > 2.5V and remains valid down to VCC = 1V.
It uses a temperature-compensated reset timeout generator with ±1% typical variation over -40°C to +85°C and incorporates glitch rejection on MR (1.5µs min pulse width) and transient immunity on all monitored inputs-validated via maximum transient duration vs. overdrive curves in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.4V ±2.5% (factory-trimmed); ensures reliable reset assertion when main supply drops below 4.29V at +25°C. |
| Reset Timeout Period | 140ms minimum (D3 index); guarantees µP remains held in reset long enough for stable power rail settling. |
| Supply Current | 8µA typical at VCC = 5.5V; enables use in battery-powered portable equipment with multi-year standby life. |
| RESET Output Type | Active-low push/pull; drives logic directly without external pull-up, supports 1.2mA sink at VCC > 2.5V. |
| Operating Temperature | -40°C to +85°C (E-grade); qualified for industrial and automotive under-hood environments. |
| RST IN / OVRST IN Threshold | 1.23V ±0.03V reference; allows precise external voltage monitoring via resistor dividers (e.g., 3.3V or 5V rails). |
| MR Input Logic | TTL/CMOS-compatible with 63.5kΩ internal pull-up; enables momentary switch reset without external components. |
Pinout & Package
MAX6307UK44D3+ is housed in a lead-free 5-pin SOT23 package (package code U5+1), footprint-compatible with JEDEC MO-178AB, and supplied in tape-and-reel format.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Asserts low during power-up/brownout; drives µP reset pin directly; sinks ≥1.2mA at VCC > 2.5V. |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance for noise immunity. |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external rail (e.g., 3.3V) via resistor divider; asserts reset if input falls below 1.23V. |
| 4 - OVRST IN | Adjustable overvoltage reset input | Monitors same or different rail for overvoltage; asserts reset if input exceeds 1.23V + hysteresis. |
| 5 - VCC | Main supply input & monitored rail | Supplies IC and feeds internal 4.4V threshold detector; operating range 4.5V to 5.5V per spec. |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent monitoring | Simultaneous supervision of VCC (4.4V), RST IN (user-defined undervoltage), and OVRST IN (user-defined overvoltage). |
| Factory-programmed precision threshold | 4.4V VCC reset point trimmed to ±2.5% over full temperature range, eliminating external resistor calibration. |
| No external timing components | 140ms reset timeout generated internally; eliminates capacitor tolerance drift and board space for RC network. |
| Transient-immune comparators | Guaranteed immunity to VCC transients ≤280µs at 4.4V overdrive; prevents false resets in noisy power environments. |
| Valid RESET down to VCC = 1V | Ensures deterministic reset behavior during deep brownout; avoids undefined µP states before full power collapse. |
Applications
| Industrial PLC Power Sequencing | Medical Infusion Pump Supervision |
|---|---|
Use Scenario: Monitors 5V system rail and isolated 3.3V microcontroller supply while detecting overvoltage on motor driver bus. IC Role / Device Role / Timing Role: Triple-input supervisory IC providing coordinated power-on reset, brownout detection, and overvoltage fault shutdown. Use Value: Prevents erratic PLC operation during AC line sags or switching transients by asserting RESET until all rails stabilize above thresholds. |
Use Scenario: Ensures safe startup and fault response in battery-powered infusion pumps with dual-voltage analog front-end and digital controller. IC Role / Device Role / Timing Role: Primary reset supervisor validating 3.3V MCU supply, 5V pump driver supply, and overvoltage on high-side current sense node. Use Value: Guarantees pump halts immediately upon overvoltage event (e.g., sensor fault), meeting IEC 60601-1 safety requirements. |
| Automotive Body Control Module | Point-of-Sale Terminal Power Management |
Use Scenario: Supervises 5V CAN transceiver supply and 3.3V microcontroller rail in vehicle door module exposed to load-dump transients. IC Role / Device Role / Timing Role: Fault-tolerant reset generator with transient-hardened inputs and manual reset for service mode entry. Use Value: Maintains functional safety integrity by ignoring <280µs negative VCC glitches while asserting reset on sustained undervoltage. |
Use Scenario: Controls power sequencing for dual-rail (5V logic, 12V printer) POS terminal with battery backup and hot-plug USB interface. IC Role / Device Role / Timing Role: Central power monitor coordinating reset timing across multiple voltage domains and enabling graceful shutdown on AC loss. Use Value: Eliminates data corruption during brief AC interruptions by holding µP in reset for full 140ms while backup capacitor sustains critical logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6307UK44D2+ | 20ms minimum reset timeout (vs. 140ms); identical VCC threshold, pinout, and feature set. | Suitable for faster-booting systems where shorter reset hold time is acceptable. | Select when system power rails settle quickly and µP initialization requires less than 140ms reset assertion. |
| TPS3808G33DBVR | Fixed 3.3V VCC threshold; no OVRST IN; open-drain output; 200ms timeout; 2.9µA ICC. | Lacks overvoltage monitoring and dual external inputs; suited for single-rail 3.3V systems only. | Choose only for cost-sensitive, single-supply designs where overvoltage protection is handled elsewhere. |
Compared with MAX6307UK44D2+ and TPS3808G33DBVR, the MAX6307UK44D3+ uniquely delivers 140ms reset hold time plus simultaneous VCC, RST IN, and OVRST IN supervision-enabling compact, robust reset control in multivoltage systems without external components or timing capacitors.
Availability
MAX6307UK44D3+ is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, automotive body control modules, point-of-sale terminals, and battery-backed embedded systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6307UK44D3+ 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, medical, and automotive markets.
The MAX6305–MAX6313 family was engineered specifically for multivoltage microprocessor supervision-delivering factory-programmable thresholds, triple-input monitoring, and transient-hardened operation in ultra-small SOT23 packages.
FAQ
What is the factory-set VCC reset threshold for MAX6307UK44D3+?
The MAX6307UK44D3+ has a factory-trimmed VCC reset threshold of 4.4V, specified with ±2.5% tolerance over the full -40°C to +85°C temperature range. This value is permanently programmed during wafer test and cannot be adjusted. The "44" in the part number directly encodes this 4.4V nominal threshold per Maxim's ordering convention.
Does MAX6307UK44D3+ support overvoltage detection on external supplies?
Yes, the MAX6307UK44D3+ includes a dedicated OVRST IN pin that accepts an external resistor divider to monitor any positive voltage rail for overvoltage conditions. When the divided voltage exceeds the internal 1.23V reference, the device asserts RESET. This function operates independently of the 4.4V VCC monitor and RST IN undervoltage input.
What is the minimum reset timeout period for MAX6307UK44D3+?
The MAX6307UK44D3+ provides a minimum reset timeout period of 140ms, indicated by the "D3" suffix in the part number. This is the guaranteed minimum duration that RESET remains asserted after all monitored supplies exceed their thresholds, ensuring sufficient time for power rail stabilization and µP initialization.
Can MAX6307UK44D3+ operate with VCC below 4.4V?
Yes, the MAX6307UK44D3+ operates with VCC as low as 1.0V and guarantees valid RESET output down to that level. However, its VCC monitor only activates when VCC rises above (4.4V − 2.5%) ≈ 4.29V; below that, the VCC comparator is inactive, but RST IN and OVRST IN remain functional if powered externally.
Is MAX6307UK44D3+ pin-compatible with other MAX630x devices?
The MAX6307UK44D3+ shares the identical 5-pin SOT23 pinout with all MAX6305–MAX6313 variants, including RESET, GND, RST IN, OVRST IN, and VCC assignments. However, functionality differs: only MAX6307/MAX6310/MAX6313 include OVRST IN; MAX6306/MAX6309/MAX6312 omit it. Pin compatibility does not imply functional interchangeability.
MAX6307UK44D3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.38V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6307UK44D3+ FAQ
1.How can I place an order for MAX6307UK44D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6307UK44D3+ 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 MAX6307UK44D3+ reliable?
The price and inventory of MAX6307UK44D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6307UK44D3+ is usually 5 days.
3.What payment methods are accepted for MAX6307UK44D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6307UK44D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6307UK44D3+?
MAX6307UK44D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6307UK44D3+ 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 MAX6307UK44D3+?
For technical support, including MAX6307UK44D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6307UK44D3+ requirements.
6.How does Aetrix verify that MAX6307UK44D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6307UK44D3+ 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 MAX6307UK44D3+ meets industry standards.
7.What is the process for return or replacement of MAX6307UK44D3+?
All MAX6307UK44D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6307UK44D3+, 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 MAX6307UK44D3+ part is unused and in its original packaging.
Return procedure for MAX6307UK44D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6307UK44D3+ 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…
