My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6315US30D2
- Part No.:
- MAX6315US30D2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US30D2.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,281
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6315US30D2 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 3.00V or when manual reset (MR) is asserted. It features a factory-trimmed 3.00V reset threshold, 20ms minimum reset timeout period, 5µA supply current, and SOT143 package. It is used in portable/battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6315US30D2 datasheet, MAX6315US30D2 pinout, MAX6315US30D2 application, or MAX6315US30D2 equivalent, key selection criteria include reset threshold accuracy (±3.5% over temperature), open-drain output compatibility with supplies up to +6V, immunity to sub-1µs VCC transients, and guaranteed operation from -40°C to +125°C.
Technical Context
The MAX6315US30D2 implements a precision voltage-monitoring comparator with laser-trimmed internal resistors to set the 3.00V nominal reset threshold, with ±3.5% tolerance over -40°C to +125°C. Its internal timer generates a fixed 20ms (min) reset timeout after VCC rises above threshold or MR deasserts.
It uses an open-drain n-channel MOSFET for the RESET output, enabling level-shifting across supply domains (e.g., monitoring 3.3V while pulling up to 5V). The MR input includes a 63kΩ internal pull-up and accepts logic-low pulses ≥1µs to trigger reset, with 100ns glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V nominal, ±3.5% over -40°C to +125°C - ensures reliable detection of 3.3V rail brownout before µP malfunction. |
| Reset Timeout Period | 20ms minimum - guarantees sufficient hold time for microcontroller initialization after power recovery. |
| Supply Current | 5µA typical at +25°C - enables use in always-on battery-backed systems without significant drain. |
| RESET Output Type | Open-drain, rated to 6V - allows pull-up to higher-voltage rails (e.g., 5V) independent of monitored VCC (3.3V). |
| MR Input Behavior | Internal 63kΩ pull-up; logic-low active; 1µs minimum pulse width - eliminates need for external debounce components. |
| Operating Temperature | -40°C to +125°C - supports industrial and automotive under-hood applications without derating. |
| VCC Operating Range | 2.5V to 5.5V - compatible with 3.3V and 5V systems, with reset assertion guaranteed down to VCC = 1V. |
Pinout & Package
SOT143 (4-pin, surface-mount) package with gull-wing leads, 1.3mm pitch, 2.9mm × 1.5mm footprint, and -40°C to +125°C operating range.
| 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 supply (≤6V); floats high otherwise. |
| 3 (MR) | Manual reset input | Logic-low active; internally pulled up to VCC via 63kΩ; debounced internally - no external RC needed. |
| 4 (VCC) | Supply and monitor input | Power source and voltage-sense node; monitors its own supply; reset asserts if VCC drops below 3.00V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.00V with ±3.5% tolerance over full temperature range - eliminates calibration and reduces BOM count. |
| Open-drain RESET output | Rated to 6V - enables interoperability between 3.3V monitoring and 5V reset logic without level translators. |
| Four timeout options | 20ms minimum (this variant) - matches typical µP reset timing requirements without external timing components. |
| Immunity to short VCC transients | Rejects glitches <100ns - prevents spurious resets during switching noise or ESD events. |
| Low quiescent current | 5µA typical - extends battery life in portable instrumentation and remote sensors. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose meters and pulse oximeters require reliable power-on reset and brownout detection during intermittent battery discharge. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to ARM Cortex-M0+ MCU until stable 3.3V rail is confirmed. Use Value: 5µA supply current minimizes standby drain; 3.00V threshold aligns with Li-ion cutoff; 20ms timeout satisfies ARM reset timing spec. |
Use Scenario: DIN-rail mounted I/O modules operate in harsh industrial environments with wide ambient temperature swings and noisy 24VDC supplies. IC Role / Device Role / Timing Role: Monitors local 3.3V LDO output feeding FPGA configuration logic; asserts RESET on undervoltage or manual service reset. Use Value: -40°C to +125°C rating ensures reliability; open-drain output interfaces cleanly with 5V FPGA reset pins; MR pin simplifies field-service reset. |
| Automotive Body Control Units | Smart Energy Meters |
|
Use Scenario: Under-hood BCMs experience thermal cycling and load-dump transients; must maintain deterministic reset behavior across temperature. IC Role / Device Role / Timing Role: Resets microcontroller upon 12V-to-3.3V DC/DC output sag during cold-crank conditions. Use Value: ±3.5% threshold accuracy over temperature prevents premature or delayed reset; 20ms timeout accommodates slow-rising rails. |
Use Scenario: Revenue-grade electricity meters require tamper-resistant, long-life power supervision for metrology SoC and secure bootloader. IC Role / Device Role / Timing Role: Provides fail-safe reset to metering ASIC during AC line dropout or capacitor aging-induced undervoltage. Use Value: Laser-trimmed threshold ensures decade-long stability; SOT143 package supports compact PCB layout; 6V-tolerant RESET enables direct interface to isolated reset domain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US30D1-T | Same 3.00V threshold but 1ms reset timeout (vs. 20ms) | Suitable for fast-boot µPs where minimal reset hold time is required | Select D1-T only if system boot sequence completes within 1ms; D2-T preferred for standard ARM/Cortex timing compliance. |
| TLV803EB30DBVR | 3.00V threshold, 240ms timeout, 1.8–6V VCC range, SOT-23-3 package | Lacks manual reset input and open-drain level-shifting capability | Use TLV803EB30DBVR only in cost-sensitive, space-constrained designs without MR requirement or multi-supply reset coordination. |
Compared with MAX6315US30D1-T and TLV803EB30DBVR, the MAX6315US30D2 offers the optimal balance of 20ms reset timing for mainstream µPs, integrated manual reset, and true open-drain level-shifting-enabling robust reset coordination across mixed-voltage domains without added components.
Availability
MAX6315US30D2 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +125°C operation.
Supply support for MAX6315US30D2 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6315 family was designed specifically for cost-sensitive, space-constrained microprocessor supervisory applications demanding precision voltage monitoring, low power, and robust reset timing across extended temperature ranges.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6315US30D2?
The MAX6315US30D2 has a nominal reset threshold of 3.00V, with a tolerance of ±3.5% over the full operating temperature range of -40°C to +125°C. This specification is factory-laser-trimmed and verified per the Electrical Characteristics table in the official MAX6315 datasheet (Rev 3, 12/05), ensuring consistent brownout detection across environmental stress.
Does MAX6315US30D2 support manual reset functionality, and how is it implemented?
Yes, MAX6315US30D2 includes a dedicated manual reset (MR) input (Pin 3) that is logic-low active. It features an internal 63kΩ pull-up resistor, so the pin can be left floating if unused. When pulled low via a momentary switch to GND, it asserts RESET for the full 20ms timeout period - no external debounce circuitry is required due to built-in 100ns glitch rejection.
Can the RESET output of MAX6315US30D2 be pulled up to a voltage higher than VCC?
Yes, the RESET output of MAX6315US30D2 is an open-drain n-channel MOSFET rated to 6.0V. It can be pulled up to any voltage between 0V and +6V - including supplies higher than the monitored VCC (e.g., pull-up to 5V while monitoring a 3.3V rail). This enables level-shifting in multi-rail systems without additional translators.
What is the minimum reset timeout period specified for MAX6315US30D2, and is it guaranteed over temperature?
The MAX6315US30D2 specifies a minimum reset timeout period of 20ms, guaranteed over the full -40°C to +125°C temperature range. Typical characterization shows normalized timeout variation within ±3% across temperature (per Figure MAX6315-04), making it suitable for timing-critical µP initialization sequences in industrial and automotive applications.
Is MAX6315US30D2 pin-compatible with other devices in the MAX6315 family or industry alternatives?
MAX6315US30D2 is pin-compatible with all MAX6315 variants in the SOT143 package (e.g., MAX6315US30D1-T, MAX6315US30D3-T), sharing identical Pin 1 (GND), Pin 2 (RESET), Pin 3 (MR), and Pin 4 (VCC) assignments. It is also pin-compatible with the MAX811 series, enabling drop-in replacement where 3.00V threshold and 20ms timeout meet system requirements.
MAX6315US30D2 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:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6315US30D2 FAQ
1.How can I place an order for MAX6315US30D2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US30D2 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 MAX6315US30D2 reliable?
The price and inventory of MAX6315US30D2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US30D2 is usually 5 days.
3.What payment methods are accepted for MAX6315US30D2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US30D2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US30D2?
MAX6315US30D2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US30D2 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 MAX6315US30D2?
For technical support, including MAX6315US30D2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US30D2 requirements.
6.How does Aetrix verify that MAX6315US30D2 is sourced from the original manufacturer or authorized distributors?
All MAX6315US30D2 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 MAX6315US30D2 meets industry standards.
7.What is the process for return or replacement of MAX6315US30D2?
All MAX6315US30D2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US30D2, 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 MAX6315US30D2 part is unused and in its original packaging.
Return procedure for MAX6315US30D2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6315US30D2 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…
