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Analog Devices Inc./Maxim Integrated MAX6315US29D3+TGC1
- Part No.:
- MAX6315US29D3+TGC1
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US29D3+TGC1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,361
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Product details
Overview
MAX6315US29D3+TGC1 from Maxim Integrated is a low-power, open-drain microprocessor reset supervisor IC that monitors VCC supply voltage and asserts an active-low RESET signal when voltage falls below 2.93V or upon manual reset assertion. It features a factory-trimmed 2.93V threshold, 140ms minimum reset timeout period, 5µA supply current, SOT143-4 package, and operates across –40°C to +125°C for critical power monitoring in portable µP systems.
For engineers reviewing the MAX6315US29D3+TGC1 datasheet, MAX6315US29D3+TGC1 pinout, MAX6315US29D3+TGC1 application, or MAX6315US29D3+TGC1 equivalent, key selection criteria include its precise 2.93V reset threshold tolerance (±3.5%), open-drain output capable of pull-up to 6V, immunity to sub-1µs VCC transients, guaranteed operation over full industrial temperature range, and compatibility with bidirectional reset pins via external pullup configuration.
Technical Context
The MAX6315US29D3+TGC1 implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set the 2.93V reset threshold, coupled with a monolithic timer circuit that guarantees ≥140ms reset assertion after VCC recovery or MR deassertion. Its open-drain RESET output uses an n-channel MOSFET switch rated for 20mA sink current and 6V absolute max voltage.
It integrates an internal 63kΩ pullup on the MR input, enabling direct connection of a momentary switch to GND without external components. The device rejects VCC transients as short as 1µs when overdrive exceeds 20mV, and maintains functional reset assertion down to VCC = 1.0V per specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Threshold | 2.93V ±3.5% - Factory-laser-trimmed for stable brownout detection at nominal 2.93V supply level |
| tRP Timeout | 140ms (min) - Ensures µP remains held in reset long enough for stable power rail recovery |
| ICC | 5µA (typ) - Enables multi-year battery life in always-on portable monitoring applications |
| Operating Temp | –40°C to +125°C - Qualified for under-hood automotive, industrial control, and high-reliability embedded use |
| RESET Output | Open-drain, 20mA sink - Allows level-shifting reset signaling across different supply domains (e.g., 3.3V µP reset by 5V system) |
| VCC Range | 2.5V to 5.5V - Supports wide-input supervisory coverage across common logic supply rails |
| MR Input | Internal 63kΩ pullup - Eliminates need for external resistor; enables simple pushbutton reset interface |
Pinout & Package
SOT143-4 (also referenced as U4+1 per Maxim package code), 1.3mm × 2.1mm × 0.95mm body, gull-wing leads, RoHS-compliant lead-free finish (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Return path for internal circuitry and RESET sink current; must be low-impedance connection |
| 2 - RESET | Active-low open-drain output | Drives low during reset; requires external pullup (e.g., 10kΩ) to any supply ≤6V; supports mixed-voltage reset signaling |
| 3 - MR | Manual reset input | Logic-low assertion forces RESET active; internally pulled up to VCC; debounced internally - no external RC needed |
| 4 - VCC | Supply & monitored rail | Powers IC and provides input to precision voltage monitor; threshold accuracy referenced to this pin |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed VTH | 2.93V with ±3.5% tolerance over –40°C to +125°C - eliminates calibration and reduces BOM count |
| 140ms min tRP | Guaranteed minimum reset hold time ensures reliable µP initialization after brownout recovery |
| Open-drain RESET | Supports pullup to 6V - enables reset coordination across multiple voltage domains (e.g., 3.3V µP controlled by 5V system rail) |
| 5µA ICC | Ultra-low quiescent current extends battery life in always-on portable instrumentation and IoT edge nodes |
| MR internal pullup | 63kΩ integrated resistor - simplifies PCB layout and reduces component count for manual reset implementation |
Applications
| Battery-Powered Data Loggers | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Long-term environmental sensor node powered by coin cell or Li-ion battery, requiring reliable wake-from-reset after low-voltage brownout. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET until VCC stabilizes above 2.93V, then holding reset for ≥140ms to ensure µC firmware boot integrity. Use Value: 5µA supply current enables >10-year battery life; ±3.5% VTH tolerance prevents spurious resets during gradual battery discharge. | Use Scenario: DIN-rail mounted programmable logic controller with isolated 24V DC input powering internal 3.3V logic rails subject to EMI-induced dips. IC Role / Device Role / Timing Role: Monitors local 3.3V rail derived from 24V supply; asserts open-drain RESET to µP when rail sags below 2.93V due to load transients or coupling noise. Use Value: Immunity to <1µs transients avoids false resets; 140ms timeout accommodates slow-rising regulated outputs after input disturbance. |
| Medical Handheld Diagnostics | Automotive Body Control Modules |
Use Scenario: Portable blood glucose meter using single-cell Li-ion (2.7–4.2V range), where undervoltage can corrupt EEPROM calibration data during power-down. IC Role / Device Role / Timing Role: Supervises main 3.3V rail; triggers hardware reset before VCC drops below safe operating margin, preventing corrupted memory writes. Use Value: 2.93V threshold aligns precisely with Li-ion end-of-discharge; –40°C to +125°C rating covers cold ambient and internal self-heating during extended use. | Use Scenario: Under-dash BCM managing door locks, lighting, and sensors, exposed to wide thermal swings and load dump transients on 12V system. IC Role / Device Role / Timing Role: Monitors locally regulated 5V or 3.3V domain; provides robust reset signaling immune to 12V line noise coupling into low-voltage rails. Use Value: Open-drain RESET allows pullup to clean 5V rail while monitoring noisy 3.3V domain; guaranteed operation to +125°C meets AEC-Q100 Grade 2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US29D2+TGC1 | Same 2.93V threshold but 20ms reset timeout (vs. 140ms) | Suitable for fast-boot µPs where shorter reset hold time is acceptable | Select when system startup timing budget prohibits 140ms delay; verify µP reset sampling window supports 20ms |
| TLV803EB29DPWR | 2.93V threshold, 240ms timeout, push-pull (not open-drain) output, 1.8–6V VCC range | Requires same-rail pullup; lacks level-shifting capability; lower 0.5µA ICC | Choose for ultra-low-power designs where open-drain flexibility is unnecessary and tighter VTH tolerance (±0.5%) is required |
Compared with MAX6315US29D2+TGC1, the MAX6315US29D3+TGC1 provides 7× longer reset hold time for robust power recovery, while versus TLV803EB29DPWR it trades lower quiescent current for essential open-drain level-shifting and broader temperature qualification (–40°C to +125°C vs. –40°C to +125°C, but TLV803 only specified to +85°C).
Availability
MAX6315US29D3+TGC1 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial control modules, and automotive body electronics requiring stable component supply with guaranteed long-term availability and full-temperature-range performance.
Supply support for MAX6315US29D3+TGC1 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 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 requiring precision voltage monitoring, configurable reset timing, and minimal external components - targeting portable, automotive, and industrial embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6315US29D3+TGC1?
The MAX6315US29D3+TGC1 has a nominal reset threshold voltage of 2.93V with a guaranteed tolerance of ±3.5% over the full operating temperature range of –40°C to +125°C. This value is factory-laser-trimmed and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" for the D3 variant. The tolerance reflects worst-case deviation across voltage, temperature, and process variation - not typical or initial calibration spread.
Does MAX6315US29D3+TGC1 support level-shifting between different supply domains?
Yes, the MAX6315US29D3+TGC1 supports level-shifting via its open-drain RESET output, which can be pulled up to any voltage between 0V and 6V - including voltages higher than its own VCC supply. For example, it can monitor a 3.3V rail (VCC = 3.3V) while pulling RESET up to a 5V domain, enabling coordinated reset signaling across mixed-voltage subsystems without additional level translators.
What is the minimum reset timeout period for MAX6315US29D3+TGC1, and how is it guaranteed?
The MAX6315US29D3+TGC1 guarantees a minimum reset timeout period of 140ms after VCC rises above the 2.93V threshold or after the MR input is deasserted. This value is production-tested and specified in the Ordering Information table for the "D3" suffix. The timeout is internally generated and independent of external components, ensuring consistent reset hold time across all units and operating conditions.
Can the MR pin of MAX6315US29D3+TGC1 be left unconnected, and what happens if it is?
Yes, the MR pin of MAX6315US29D3+TGC1 can be left unconnected because it features an internal 63kΩ pullup resistor to VCC. With MR floating, the input remains logic-high and does not assert reset. If external manual reset functionality is required, connect a normally-open momentary switch between MR and GND - no external pullup or debounce components are needed due to the integrated design.
Is MAX6315US29D3+TGC1 qualified for automotive under-hood applications?
Yes, the MAX6315US29D3+TGC1 is qualified for automotive under-hood applications: it is specified for continuous operation from –40°C to +125°C, meets Maxim's automotive-grade reliability screening, and carries the "D3" temperature grade indicating full industrial/automotive temperature range support. Its open-drain output, low ICC, and transient immunity make it suitable for body control modules and other under-hood electronics where thermal and electrical robustness are critical.
MAX6315US29D3+TGC1 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:
- 2.93V
- 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-143-4
MAX6315US29D3+TGC1 FAQ
1.How can I place an order for MAX6315US29D3+TGC1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US29D3+TGC1 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 MAX6315US29D3+TGC1 reliable?
The price and inventory of MAX6315US29D3+TGC1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US29D3+TGC1 is usually 5 days.
3.What payment methods are accepted for MAX6315US29D3+TGC1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US29D3+TGC1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US29D3+TGC1?
MAX6315US29D3+TGC1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US29D3+TGC1 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 MAX6315US29D3+TGC1?
For technical support, including MAX6315US29D3+TGC1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US29D3+TGC1 requirements.
6.How does Aetrix verify that MAX6315US29D3+TGC1 is sourced from the original manufacturer or authorized distributors?
All MAX6315US29D3+TGC1 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 MAX6315US29D3+TGC1 meets industry standards.
7.What is the process for return or replacement of MAX6315US29D3+TGC1?
All MAX6315US29D3+TGC1 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US29D3+TGC1, 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 MAX6315US29D3+TGC1 part is unused and in its original packaging.
Return procedure for MAX6315US29D3+TGC1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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