My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6394US317D3+T
- Part No.:
- MAX6394US317D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6394US317D3+T.pdf
- Description:
- IC MPU/RESET CIRC 3.17V SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6394US317D3+T from Maxim Integrated is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an active-low open-drain RESET signal when VCC drops below 3.168V or when manual reset (MR) is asserted. It provides ±1.0% threshold accuracy over -40°C to +125°C, 105ms minimum reset timeout, and 5µA supply current. Used in battery-powered controllers and critical μP power monitoring.
For engineers reviewing the MAX6394US317D3+T datasheet, MAX6394US317D3+T pinout, MAX6394US317D3+T application, or MAX6394US317D3+T equivalent, key selection criteria include factory-trimmed 3.168V reset threshold, 105ms timeout, SOT143-4 package, open-drain output capable of pull-up beyond VCC, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6394US317D3+T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set its nominal 3.168V reset threshold. Its reset timeout is fixed at 105ms (min), generated by an internal RC timer unaffected by external components.
It features debounced manual reset input (MR) with 63kΩ internal pullup and immunity to VCC transients ≤100ns. The open-drain RESET output supports level-shifting-pullable to any voltage up to +6V independent of VCC, enabling interfacing across mixed-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.168V ±1.0% from -40°C to +125°C - ensures reliable brownout detection across automotive and industrial temperature ranges |
| Reset Timeout Period | 105ms (min), 200ms (typ), 280ms (max) - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 5µA (typ) at VCC = 3.6V, -40°C to +85°C - enables multi-year operation in coin-cell–powered portable equipment |
| Operating Voltage Range | 1.0V to 5.5V - supports monitoring of 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails without external scaling |
| RESET Output Type | Open-drain n-channel MOSFET - allows pull-up to voltages up to +6V, enabling level-shifted reset signaling across supply domains |
| MR Input Logic | Active-low with 0.3×VCC low threshold and 0.7×VCC high threshold - compatible with standard CMOS logic levels across VCC range |
| Package | SOT143-4 (4-pin) - 1.3mm × 2.9mm footprint, surface-mount compatible with high-density PCB layouts |
Pinout & Package
SOT143-4 package: 4-pin, single-row, gull-wing lead frame; 1.3mm × 2.9mm body size; 0.95mm height; RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Primary return path for internal circuitry and RESET sink current; must be connected to system ground plane |
| 2 (RESET) | Active-low open-drain output | Drives low during reset assertion; requires external pullup (e.g., 10kΩ) to target supply (≤6V); supports level shifting |
| 3 (MR) | Manual reset input | Logic-low active; internally pulled up to VCC via 63kΩ resistor; accepts momentary switch to GND without external debounce |
| 4 (VCC) | Supply and monitor input | Power source and monitored rail; internal precision divider samples this node to detect undervoltage conditions |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.168V with ±1.0% tolerance over full -40°C to +125°C range - eliminates calibration and external resistor networks |
| Fixed 105ms reset timeout | Guaranteed minimum delay ensures μP core and peripherals fully stabilize before release from reset state |
| Open-drain RESET with >VCC capability | Enables direct interface to 5V or 3.3V reset inputs even when monitoring a 1.8V or 2.5V supply rail |
| Internal MR pullup | 63kΩ resistor allows MR pin to float unconnected - reduces BOM count and simplifies layout for non-manual-reset designs |
| Transient immunity | Rejects VCC glitches <100ns wide - prevents spurious resets during switching noise or ESD events |
Applications
| Industrial Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Monitoring 3.3V microcontroller supply in programmable logic controllers operating in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset during brownout or cold-start conditions to prevent corrupted firmware execution. Use Value: ±1.0% threshold accuracy ensures consistent reset behavior from -40°C to +125°C, eliminating field failures due to temperature-induced threshold drift. | Use Scenario: Power supervision of 3.3V domain in BCMs where supply stability is critical for door lock, lighting, and sensor interface functions. IC Role / Device Role / Timing Role: AEC-Q100 qualified reset supervisor providing 105ms minimum reset hold time after VCC recovery to meet automotive startup timing requirements. Use Value: Open-drain RESET output pulled to 5V enables compatibility with legacy 5V reset inputs while monitoring a modern 3.3V MCU rail. |
| Portable Medical Instruments | Battery-Powered Data Loggers |
Use Scenario: Long-life handheld diagnostic devices powered by lithium coin cells, requiring ultra-low quiescent current and precise undervoltage detection. IC Role / Device Role / Timing Role: Low-power (5µA) voltage monitor triggering controlled shutdown before battery voltage collapses below functional MCU operating range. Use Value: Factory-set 3.168V threshold aligns with typical LiMnO₂ cell end-of-life voltage, extending usable battery life without software intervention. | Use Scenario: Remote environmental sensors logging data on AA/AAA alkaline batteries, operating intermittently over years with minimal maintenance. IC Role / Device Role / Timing Role: Reset supervisor ensuring clean boot after cold temperature-induced voltage sag during winter deployment. Use Value: Immunity to sub-100ns VCC transients prevents false resets caused by RF coupling or mechanical switch bounce in unshielded enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | 3.3V fixed threshold; 200ms default timeout; 1.8V–6.0V VCC range; push-pull RESET output | Push-pull output limits level-shifting capability; no MR input debounce; higher 12µA ICC | Select when push-pull drive is required and 3.3V threshold suffices; verify RESET load compatibility |
| ADM6315-31ARTZ-R7 | 3.08V threshold; 200ms timeout; 1.2V–5.5V VCC; open-drain RESET; no MR input | Lacks manual reset functionality; tighter ±0.5% threshold spec but narrower temp range (-40°C to +85°C) | Choose when MR is unnecessary and higher threshold accuracy at room temperature is prioritized over extended temperature coverage |
Compared with TPS3808G33DBVR and ADM6315-31ARTZ-R7, the MAX6394US317D3+T uniquely combines AEC-Q100 qualification, 105ms timeout, 3.168V threshold, MR input with internal pullup, and open-drain RESET capable of >VCC pull-up - making it optimal for automotive and industrial systems demanding robust, flexible reset control.
Availability
MAX6394US317D3+T is available at Aetrix Electronics and suitable for industrial controllers, automotive body control modules, and portable medical instruments requiring stable component supply, long-term lifecycle support, and guaranteed AEC-Q100 compliance.
Supply support for MAX6394US317D3+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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.
The MAX6394 series delivers high-accuracy, low-power microprocessor supervisory circuits optimized for systems requiring guaranteed reset assertion during brownout, power-up, and manual intervention - especially where space, temperature, and reliability constraints preclude discrete solutions.
FAQ
What is the exact reset threshold voltage of the MAX6394US317D3+T?
The MAX6394US317D3+T has a factory-trimmed nominal reset threshold of 3.168V, with guaranteed tolerance of ±1.0% over the full -40°C to +125°C operating temperature range. This value is confirmed in Table 2 of the official datasheet and corresponds directly to the "317" suffix in the part number.
Does the MAX6394US317D3+T support manual reset functionality?
Yes, the MAX6394US317D3+T includes a dedicated MR (manual reset) input on Pin 3. A logic-low assertion on MR forces RESET low immediately and holds it for the full 105ms timeout period after MR returns high. An internal 63kΩ pullup resistor allows MR to remain unconnected if manual reset is not required.
Can the RESET output of the MAX6394US317D3+T be pulled up to a voltage higher than VCC?
Yes, the MAX6394US317D3+T features an open-drain RESET output rated for voltages up to +6.0V. This allows the RESET line to be pulled up to a higher-voltage rail (e.g., 5V) while monitoring a lower VCC (e.g., 3.3V), enabling level-shifted reset signaling across mixed-supply systems without additional components.
What is the minimum reset timeout period specified for the MAX6394US317D3+T?
The MAX6394US317D3+T is configured with the D3 timeout option, specifying a minimum reset timeout period of 105ms. Typical and maximum values are 200ms and 280ms respectively, all guaranteed over -40°C to +125°C. This ensures sufficient time for microprocessor core and peripheral initialization after power recovery.
Is the MAX6394US317D3+T qualified for automotive applications?
Yes, the MAX6394US317D3+T is AEC-Q100 qualified for automotive use. This qualification is explicitly stated in the Benefits and Features section of the datasheet and applies to the /V variant; however, the +T tape-and-reel packaging and SOT143-4 package used in MAX6394US317D3+T meet the same reliability and testing standards required for automotive-grade components.
MAX6394US317D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.168V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 105ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6394US317D3+T FAQ
1.How can I place an order for MAX6394US317D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6394US317D3+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 MAX6394US317D3+T reliable?
The price and inventory of MAX6394US317D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6394US317D3+T is usually 5 days.
3.What payment methods are accepted for MAX6394US317D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6394US317D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6394US317D3+T?
MAX6394US317D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6394US317D3+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 MAX6394US317D3+T?
For technical support, including MAX6394US317D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6394US317D3+T requirements.
6.How does Aetrix verify that MAX6394US317D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6394US317D3+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 MAX6394US317D3+T meets industry standards.
7.What is the process for return or replacement of MAX6394US317D3+T?
All MAX6394US317D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6394US317D3+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 MAX6394US317D3+T part is unused and in its original packaging.
Return procedure for MAX6394US317D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6394US317D3+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…
