My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6315US44D1-T
- Part No.:
- MAX6315US44D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US44D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,765
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6315US44D1-T from Analog Devices is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an open-drain reset signal when voltage falls below 4.39V or upon manual reset assertion. It provides a guaranteed 1ms minimum reset timeout period, consumes only 5μA typical supply current at 5.5V, and operates across -40°C to +125°C for use in battery-powered instrumentation and industrial controllers.
For engineers reviewing the MAX6315US44D1-T datasheet, MAX6315US44D1-T pinout, MAX6315US44D1-T application, or MAX6315US44D1-T equivalent, key selection criteria include factory-trimmed 4.39V reset threshold, 1ms min timeout, SOT23-4 package compatibility, open-drain RESET output capable of level-shifting above VCC, and guaranteed operation over extended temperature range.
Technical Context
The MAX6315US44D1-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider setting nominal VTH = 4.39V ±3.5% over -40°C to +125°C, and integrates a monostable timer that guarantees ≥1ms reset assertion after VCC recovery or MR deassertion. Its open-drain RESET output uses an n-channel MOSFET switch rated for 6V max pullup voltage independent of VCC.
MR input includes a 63kΩ internal pullup resistor and supports 1μs minimum pulse width with 100ns glitch rejection; reset delay from MR to RESET is 500ns. The device is immune to transients <35μs wide when VCC dips 20mV below VTH, and maintains valid reset assertion down to VCC = 1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH) | 4.39V ±3.5% over -40°C to +125°C - ensures reliable brownout detection for 4.5V nominal systems |
| Reset Timeout Period (tRP) | 1ms (min) - guarantees sufficient processor initialization time after power recovery |
| Supply Current (ICC) | 5μA typical at 5.5V, -40°C to +85°C - enables multi-year battery life in portable equipment |
| RESET Output Type | Open-drain n-MOSFET - allows level-shifting up to 6V, enabling reset signaling across mixed-supply domains |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| MR Input Pullup | 63kΩ internal - eliminates external resistor for manual reset, simplifying PCB layout |
| VCC Range | 1.0V to 5.5V - supports operation during deep brownout and enables use with Li-ion and supercapacitor backup |
Pinout & Package
MAX6315US44D1-T is housed in a 4-pin SOT23 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 0.95mm height. Pin 1 is GND, Pin 2 is RESET (open-drain), Pin 3 is MR (manual reset input), and Pin 4 is VCC (supply and threshold monitor input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal comparator and timer; must be low-impedance connection to system ground plane |
| RESET (Pin 2) | Active-low open-drain output | Sinks current when asserted; requires external pullup (e.g., 10kΩ) to any supply ≤6V for level-shifted reset signaling |
| MR (Pin 3) | Manual reset input | Logic-low active; internally pulled up to VCC via 63kΩ; debounced by design - no external RC needed |
| VCC (Pin 4) | Supply voltage and threshold monitor | Power source and monitored rail; internal laser-trimmed divider sets 4.39V reset point; functional down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed VTH | 4.39V with ±3.5% tolerance over full temperature range - eliminates calibration and reduces BOM count |
| Guaranteed 1ms reset timeout | Minimum assertion time ensures μP reset completion before code execution resumes |
| Open-drain RESET with 6V rating | Enables reset signaling from 1.0–5.5V monitored rail to 3.3V/5V logic domain without level translators |
| Ultra-low ICC (5μA typ) | Extends battery runtime in portable instruments and wireless sensors operating on coin cells or energy harvesters |
| MR with integrated 63kΩ pullup | Reduces component count and board space; supports direct switch-to-ground connection without external bias |
Applications
| Industrial PLC I/O Module | Battery-Powered Data Logger |
|---|---|
Use Scenario: Power monitoring in DIN-rail mounted programmable logic controller modules exposed to 12–24VDC field supplies with ripple and transient noise. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during brownout events caused by load switching or cable voltage drop. Use Value: Prevents firmware corruption during undervoltage conditions while consuming <5μA to minimize standby drain on backup capacitors. |
Use Scenario: Long-term environmental sensor node powered by CR2032 coin cell, logging temperature/humidity every 5 minutes. IC Role / Device Role / Timing Role: Voltage supervisor ensuring clean μC reset during cold-start and battery depletion phases. Use Value: Factory-trimmed 4.39V threshold aligns with LiMnO₂ cell end-of-life voltage; 1ms timeout satisfies MSP430/Family reset timing requirements. |
| Automotive Body Control Unit | Medical Infusion Pump Controller |
Use Scenario: Under-hood electronic control unit subjected to load dump and cold-cranking transients per ISO 16750-2. IC Role / Device Role / Timing Role: Reset generator immune to sub-100ns glitches and validated over -40°C to +125°C. Use Value: Guaranteed operation at 125°C ambient; open-drain RESET interfaces directly to 5V microcontroller reset pin while powered from 3.3V domain. |
Use Scenario: Safety-critical infusion pump with dual-redundant microcontrollers requiring deterministic reset coordination. IC Role / Device Role / Timing Role: Primary supervisory IC providing synchronized reset assertion to both MCUs during power-up and brownout. Use Value: 1ms minimum timeout ensures both processors exit reset simultaneously; ±3.5% VTH tolerance meets IEC 60601-1 reliability thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US44D1-T | Bidirectional reset pin support; identical VTH (4.39V) and tRP (1ms); same SOT23-4 package | Required for μCs with bidirectional reset pins (e.g., certain ARM Cortex-M series); not compatible with unidirectional-only designs | Select MAX6314US44D1-T only if target microcontroller uses shared reset/debug pin functionality |
| TPS3808G33DBVR | 3.3V fixed reset threshold; 20ms default timeout; push-pull RESET output; 1.5μA ICC | Optimized for 3.3V systems; lacks open-drain flexibility and manual reset input; requires external MR circuitry | Choose TPS3808G33DBVR for cost-sensitive 3.3V-only applications where level-shifting is unnecessary |
Compared with MAX6315US44D1-T, MAX6314US44D1-T adds bidirectional reset capability at identical electrical specs, while TPS3808G33DBVR trades manual reset and open-drain flexibility for lower quiescent current and fixed 3.3V threshold - making MAX6315US44D1-T optimal for 4.39V systems needing MR and level-shifted reset signaling.
Availability
MAX6315US44D1-T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, battery-powered data loggers, automotive body control units, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US44D1-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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision, reliability, and innovation.
The MAX6315 family delivers ultra-low-power, factory-trimmed supervisory circuits for mission-critical power monitoring in harsh environments - designed specifically for applications demanding guaranteed reset behavior across wide voltage and temperature ranges.
FAQ
What is the exact reset threshold voltage for MAX6315US44D1-T?
The MAX6315US44D1-T has a factory-trimmed nominal reset threshold voltage of 4.39V, with tolerance of ±3.5% over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during manufacturing and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" with test conditions confirming its accuracy across temperature and voltage conditions.
Does MAX6315US44D1-T support manual reset functionality?
Yes, MAX6315US44D1-T includes a dedicated MR (Manual Reset) input (Pin 3) that asserts reset when pulled low. It features an internal 63kΩ pullup resistor, allowing direct connection of a momentary switch to ground without external components. The MR input accepts pulses as short as 1μs and rejects glitches under 100ns, making it robust in noisy environments.
Can the RESET output of MAX6315US44D1-T be pulled up to a voltage higher than VCC?
Yes, the RESET output of MAX6315US44D1-T is an open-drain n-channel MOSFET rated for up to 6.0V, allowing it to be pulled up to any voltage between 0V and 6V - including supplies higher than VCC. This enables level-shifting functionality, such as generating a 5V reset signal while monitoring a 3.3V VCC rail, without external translators.
What is the guaranteed minimum reset timeout period for MAX6315US44D1-T?
The guaranteed minimum reset timeout period for MAX6315US44D1-T is 1ms, as confirmed in the Electrical Characteristics table under "Reset Timeout Period (tRP)" for the D1-T variant. This applies across the full temperature range (-40°C to +125°C), with typical values ranging from 1.0ms to 2.4ms depending on temperature and process variation.
Is MAX6315US44D1-T qualified for automotive under-hood applications?
Yes, MAX6315US44D1-T is specified for operation from -40°C to +125°C and tested per Analog Devices' industrial-grade qualification standards. Its guaranteed performance at 125°C ambient, immunity to short VCC transients, and robust MR input make it suitable for automotive body control modules and other under-hood applications where thermal and electrical stress are present.
MAX6315US44D1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.39V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US44D1-T FAQ
1.How can I place an order for MAX6315US44D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US44D1-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 MAX6315US44D1-T reliable?
The price and inventory of MAX6315US44D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US44D1-T is usually 5 days.
3.What payment methods are accepted for MAX6315US44D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US44D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US44D1-T?
MAX6315US44D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US44D1-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 MAX6315US44D1-T?
For technical support, including MAX6315US44D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US44D1-T requirements.
6.How does Aetrix verify that MAX6315US44D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6315US44D1-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 MAX6315US44D1-T meets industry standards.
7.What is the process for return or replacement of MAX6315US44D1-T?
All MAX6315US44D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US44D1-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 MAX6315US44D1-T part is unused and in its original packaging.
Return procedure for MAX6315US44D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6315US44D1-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…
