My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6315US35D3
- Part No.:
- MAX6315US35D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US35D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:441
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6315US35D3 from Maxim Integrated is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an open-drain active-low RESET signal when voltage falls below 3.50V or upon manual reset assertion. It features a factory-trimmed 3.50V reset threshold, 140ms minimum reset timeout period, 5µA supply current, and operates across -40°C to +125°C. It is used in portable equipment and critical µP power monitoring systems where reliable brownout detection and manual reset are required.
For engineers reviewing the MAX6315US35D3 datasheet, MAX6315US35D3 pinout, MAX6315US35D3 application, or MAX6315US35D3 equivalent, key selection considerations include its SOT143 package, 3.50V ±3.5% reset threshold over temperature, 140ms min timeout, open-drain output capable of level-shifting above VCC, and immunity to short VCC transients.
Technical Context
The MAX6315US35D3 implements a precision voltage-monitoring comparator with laser-trimmed internal resistors to set a nominal 3.50V reset threshold, specified with ±3.5% tolerance over -40°C to +125°C. Its internal timer generates a guaranteed minimum 140ms reset pulse after VCC rises above threshold or MR deasserts.
It features an open-drain n-channel MOSFET RESET output that sinks current up to 0.5mA at 0.4V, supports pull-up voltages up to +6.0V (independent of VCC), and includes an internally pulled-up MR input (63kΩ) with 100ns glitch rejection and 1µs minimum pulse width requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.50V ±3.5% over -40°C to +125°C - ensures reliable brownout detection for 3.3V systems with margin. |
| Reset Timeout Period | 140ms minimum - guarantees sufficient reset hold time for slow-ramping µP clocks and memory initialization. |
| Supply Current | 5µA typical at +25°C - enables use in battery-powered applications with multi-year shelf life. |
| Operating Voltage Range | 2.5V to 5.5V - supports monitoring of 3.3V and 5V rails while remaining functional during undervoltage. |
| RESET Output Type | Open-drain, rated to 6.0V - allows level-shifting to higher-voltage logic domains (e.g., 5V reset line from 3.3V VCC). |
| MR Input Behavior | Internally pulled up to VCC (63kΩ); asserts reset on logic-low - eliminates external pull-up and enables momentary switch interface. |
| Temperature Range | -40°C to +125°C - qualified for automotive under-hood and industrial embedded environments. |
Pinout & Package
SOT143 (4-pin, surface-mount) package with 1.3mm × 2.1mm footprint and 0.95mm height; lead-free and RoHS-compliant; tape-and-reel packaging only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal circuitry and RESET sink current; must be connected directly to system ground plane. |
| 2 RESET | Active-low open-drain output | Sinks current when asserted; requires external pull-up resistor (e.g., 10kΩ) to target logic rail (≤6V); enables voltage-level translation. |
| 3 MR | Manual reset input | Logic-low assertion forces RESET active; internal 63kΩ pull-up allows direct switch-to-GND connection without external components. |
| 4 VCC | Supply and monitor input | Power source and monitored rail; internal voltage divider compares against 3.50V threshold; functional down to 1.0V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed threshold | 3.50V with ±3.5% tolerance over full temperature range - eliminates calibration and reduces BOM count. |
| Four selectable timeout periods | 140ms minimum for MAX6315US35D3 - matches boot-time requirements of ARM Cortex-M and PIC microcontrollers. |
| Open-drain RESET with >VCC capability | Supports pull-up to 6.0V independent of VCC - enables single reset net across mixed-voltage systems (e.g., 3.3V core + 5V I/O). |
| Immunity to short VCC transients | Rejects glitches ≤100ns at 1mV/µs slew rate - prevents spurious resets during switching noise or ESD events. |
| Low quiescent current | 5µA max at +25°C - extends battery life in portable instrumentation and wireless sensors. |
Applications
| Portable Medical Sensors | Industrial PLC Controllers |
|---|---|
|
Use Scenario: Battery-powered glucose meters and pulse oximeters require reliable power-on reset and brownout recovery during intermittent battery discharge. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to microcontroller until stable 3.3V rail is confirmed and 140ms timeout expires. Use Value: Prevents firmware execution errors during weak-battery conditions and ensures deterministic startup after button-activated manual reset. |
Use Scenario: Programmable logic controllers operate in electrically noisy factory environments with fluctuating 24V DC supplies stepped down to 3.3V/5V rails. IC Role / Device Role / Timing Role: Monitors 3.3V domain derived from industrial DC-DC converter; asserts RESET on undervoltage or operator-initiated fault recovery. Use Value: Guarantees µP reset integrity despite voltage sags caused by motor starts or relay switching, with 140ms hold time accommodating slow regulator recovery. |
| Automotive Body Control Modules | Smart Energy Meters |
|
Use Scenario: Under-hood BCMs experience wide temperature swings (-40°C to +125°C) and load-dump transients on 12V input, affecting downstream 3.3V regulators. IC Role / Device Role / Timing Role: Resets MCU when 3.3V rail drops below 3.50V due to regulator failure or cold-cranking sag; MR supports service-mode reinitialization. Use Value: Meets AEC-Q100 Grade 1 thermal qualification and provides deterministic reset behavior across full automotive temperature range. |
Use Scenario: Revenue-grade electricity meters must retain accurate timekeeping and secure firmware state during AC line interruptions and capacitor hold-up decay. IC Role / Device Role / Timing Role: Detects decay of backup-supply-derived 3.3V rail and triggers controlled µP shutdown/reset before SRAM corruption occurs. Use Value: 5µA supply current minimizes backup battery drain; 140ms timeout aligns with supercapacitor discharge profile to maximize safe shutdown window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US35D2-T | Same 3.50V threshold but 20ms minimum reset timeout vs. 140ms | Suitable for faster-boot µPs (e.g., some MSP430 variants) where shorter reset hold is acceptable | Select D2 variant only if system boot sequence completes within 20ms; D3's 140ms is required for most ARM-based designs. |
| TLV803EB33DBZR | 3.3V threshold (not 3.50V), 200ms timeout, SOT-23-3 package, no MR input | Lacks manual reset and has tighter 3.3V threshold - less margin for 3.3V rail tolerance drift | Use TLV803EB33DBZR only in cost-sensitive, space-constrained designs where MR is unnecessary and 3.3V threshold suffices. |
Compared with MAX6315US35D2-T and TLV803EB33DBZR, the MAX6315US35D3 uniquely combines 3.50V threshold headroom for 3.3V systems, 140ms industrial-grade timeout, integrated MR functionality, and SOT143 compatibility with legacy Maxim supervisory footprints - making it optimal for robust, field-deployed embedded systems.
Availability
MAX6315US35D3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC controllers, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US35D3 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 MAX6315US35D3 belongs to Maxim's µP supervisory product line, engineered specifically for high-reliability power-monitoring in embedded systems where deterministic reset timing, low power, and temperature resilience are critical.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6315US35D3?
The MAX6315US35D3 has a nominal reset threshold of 3.50V, with a guaranteed tolerance of ±3.5% over the full operating temperature range of -40°C to +125°C. This means the actual trip point falls between 3.378V and 3.623V under worst-case conditions, providing robust margin for 3.3V supply rails with typical ±5% regulation.
Does MAX6315US35D3 support manual reset, and how is it implemented?
Yes, MAX6315US35D3 includes a dedicated MR (manual reset) input on pin 3. It features an internal 63kΩ pull-up resistor to VCC, so the pin can be left unconnected if unused. To assert reset, drive MR low via a momentary switch to GND - no external debounce circuitry is needed due to built-in 100ns glitch rejection.
Can the RESET output of MAX6315US35D3 be pulled up to a voltage higher than its VCC supply?
Yes, the RESET output of MAX6315US35D3 is an open-drain structure rated to 6.0V, allowing it to be pulled up to any voltage between 0V and 6.0V - including rails higher than VCC (e.g., pulling up to 5V while VCC = 3.3V). This enables level-shifting for mixed-voltage system reset distribution without additional logic.
What is the minimum reset timeout period specified for MAX6315US35D3, and how is it guaranteed?
The MAX6315US35D3 guarantees a minimum reset timeout period of 140ms after VCC rises above the 3.50V threshold or after MR is deasserted. This value is production-tested and specified in the Electrical Characteristics table under "tRP" with no upper limit - ensuring sufficient hold time for µP clock stabilization and memory initialization sequences.
Is MAX6315US35D3 compatible with the MAX811, and what does "pin-compatible" mean in this context?
Yes, MAX6315US35D3 is pin-compatible with the MAX811 in the SOT143 package: both share identical pin 1 (GND), pin 2 (RESET), pin 3 (MR), and pin 4 (VCC) assignments and electrical behavior. However, MAX6315US35D3 offers tighter threshold accuracy, wider temperature range (-40°C to +125°C), and lower supply current (5µA vs. 12µA), making it a functional upgrade.
MAX6315US35D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6315US35D3 FAQ
1.How can I place an order for MAX6315US35D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US35D3 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 MAX6315US35D3 reliable?
The price and inventory of MAX6315US35D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US35D3 is usually 5 days.
3.What payment methods are accepted for MAX6315US35D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US35D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US35D3?
MAX6315US35D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US35D3 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 MAX6315US35D3?
For technical support, including MAX6315US35D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US35D3 requirements.
6.How does Aetrix verify that MAX6315US35D3 is sourced from the original manufacturer or authorized distributors?
All MAX6315US35D3 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 MAX6315US35D3 meets industry standards.
7.What is the process for return or replacement of MAX6315US35D3?
All MAX6315US35D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US35D3, 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 MAX6315US35D3 part is unused and in its original packaging.
Return procedure for MAX6315US35D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6315US35D3 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…
