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Analog Devices Inc./Maxim Integrated MAX6314US28D2-TG01
- Part No.:
- MAX6314US28D2-TG01
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US28D2-TG01.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6314US28D2-TG01 from Maxim Integrated is a low-power CMOS microprocessor supervisory circuit designed to monitor VCC supply voltage and assert a bidirectional reset signal for µPs with compatible reset I/Os (e.g., 68HC11). It features a factory-trimmed 2.80V reset threshold, 20ms minimum reset timeout period, ±1.8% threshold accuracy at +25°C, 5µA supply current, and SOT143 package. Used in portable/battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6314US28D2-TG01 datasheet, MAX6314US28D2-TG01 pinout, MAX6314US28D2-TG01 application, or MAX6314US28D2-TG01 equivalent, key selection criteria include bidirectional RESET compatibility, 2.80V VTH tolerance over temperature, 20ms tRP timing, immunity to short VCC transients, and absence of external pull-up requirements.
Technical Context
The MAX6314US28D2-TG01 implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set its 2.80V nominal reset threshold. Its reset timeout period is internally programmed to a minimum of 20ms after VCC rises above threshold or manual reset deassertion.
RESET output combines an n-channel pulldown, p-channel active pullup, and 4.7kΩ passive pullup-enabling direct interface to bidirectional µP reset pins without external components. MR input includes a 63kΩ internal pullup and supports debounced manual reset with no external circuitry required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 2.80V - Factory-trimmed threshold ensures accurate power-fail detection at system-specific supply level. |
| tRP Min | 20ms - Guarantees sufficient reset assertion time for full µP initialization during power-up or recovery. |
| Threshold Accuracy | ±1.8% at +25°C - Enables predictable reset behavior without calibration or trimming in production. |
| ICC | 5µA - Ultra-low quiescent current extends battery life in portable applications. |
| VCC Range | 1.0V to 5.5V - Supports operation across wide supply range including deep brownout detection down to 1V. |
| MR Input Threshold | 0.3 × VCC - Ensures robust logic-low recognition even under varying supply conditions. |
| Reset Output Type | Bidirectional-compatible with active pullup - Eliminates need for external pull-up resistor and enables multi-device reset bus sharing. |
Pinout & Package
SOT143 package: 4-pin surface-mount, lead-free compatible, -40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage input and reset threshold monitor | Primary power rail connection; internal voltage divider derives 2.80V reset reference directly from this pin. |
| MR | Manual reset input | Active-low input with 63kΩ internal pullup; asserts reset when pulled low, remains asserted for full 20ms timeout after release. |
| RESET | Bidirectional reset output | Combines n-channel sink, p-channel active pullup, and 4.7kΩ passive pullup - interfaces directly to 68HC11-style bidirectional reset pins without external components. |
| GND | Ground reference | Common return path for all internal circuitry and reset output current sinking. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET output | Integrates 4.7kΩ pullup + p-channel active pullup to meet timing requirements of fast µPs (e.g., 68HC11) on shared reset buses with multiple devices. |
| Factory-trimmed VTH | 2.80V ±1.8% at +25°C ensures precise power monitoring without external resistors or calibration. |
| Debounced manual reset | MR pin requires no external RC network - internal 63kΩ pullup and glitch rejection enable clean reset initiation via momentary switch to GND. |
| Transient immunity | Rejects VCC glitches as short as 100ns (at ≥100mV overdrive), preventing spurious resets in noisy environments. |
| Low-power operation | 5µA typical supply current allows continuous monitoring in battery-critical systems without significant drain. |
Applications
| Portable Medical Devices | Industrial PLC Controllers |
|---|---|
Use Scenario: Battery-powered glucose meters and handheld diagnostic tools require guaranteed reset during cold-start and low-battery brownout. IC Role / Device Role / Timing Role: Supervisory IC asserting bidirectional RESET to ARM Cortex-M0+ MCU upon VCC drop below 2.80V or manual button press. Use Value: 20ms minimum timeout ensures complete MCU register initialization; 5µA ICC extends single-CR2032 battery life beyond 2 years in standby. | Use Scenario: Programmable logic controllers in factory automation must recover reliably after line-voltage sags or ESD-induced supply disturbances. IC Role / Device Role / Timing Role: Power supervisor monitoring 3.3V logic rail and driving bidirectional reset input of Renesas RX65N microcontroller. Use Value: ±2.5% VTH accuracy over -40°C to +85°C prevents false resets during thermal cycling; MR pin enables field-service reset without opening enclosure. |
| Smart Energy Meters | Automotive Body Control Modules |
Use Scenario: Revenue-grade electricity meters operate unattended for 15+ years and must survive repeated AC-line interruptions. IC Role / Device Role / Timing Role: Voltage monitor asserting RESET to TI MSP430FR5994 during 100ms VCC dips caused by relay switching transients. Use Value: Immunity to sub-1µs VCC transients avoids unnecessary reboots; SOT143 footprint minimizes PCB area in space-constrained meter modules. | Use Scenario: BCMs managing door locks, lighting, and window motors experience load-dump and jump-start events causing VCC instability. IC Role / Device Role / Timing Role: Reset supervisor interfacing with NXP S32K144's bidirectional RST_B pin to ensure deterministic boot after 12V supply recovery. Use Value: Active pullup ensures RESET rises within two E-clock cycles (<500ns @ 4MHz) despite 300pF bus capacitance from multiple ECUs on shared reset line. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US28D2-T | Open-drain RESET output (no active pullup); identical VTH (2.80V) and tRP (20ms). | Requires external 4.7kΩ pullup; unsuitable for bidirectional µP reset I/Os like 68HC11. | Select only if target µP uses open-drain reset input and board layout already includes pullup resistor. |
| TPS3808G18DBVR | Push-pull RESET output; 1.8V VTH; 20ms tRP; 1.4µA ICC; SOT-23-5 package. | Fixed 1.8V threshold - cannot replace 2.80V monitoring; lacks MR input and bidirectional capability. | Use only for ultra-low-power applications needing <2µA ICC and where 1.8V reset point matches system architecture. |
Compared with MAX6314US28D2-TG01, MAX6315US28D2-T omits the critical active pullup needed for bidirectional µP interfaces, while TPS3808G18DBVR offers lower current but fails to match the 2.80V threshold or MR functionality - making MAX6314US28D2-TG01 uniquely suited for legacy 68HC11-based and multi-device reset-bus designs.
Availability
MAX6314US28D2-TG01 is available at Aetrix Electronics and suitable for portable medical devices, industrial PLC controllers, smart energy meters, automotive body control modules, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6314US28D2-TG01 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 and mixed-signal ICs for power management, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX6314 family delivers microprocessor supervisory functions with factory-trimmed thresholds and bidirectional reset outputs, targeting systems requiring reliable, low-component-count power monitoring for legacy and modern µPs.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6314US28D2-TG01?
The MAX6314US28D2-TG01 has a factory-trimmed nominal reset threshold of 2.80V, with ±1.8% accuracy at +25°C and ±2.5% over the full -40°C to +85°C operating temperature range. This specification is confirmed in the Electrical Characteristics table of the official datasheet and applies specifically to the US28D2 variant, not the broader MAX6314 family.
Does MAX6314US28D2-TG01 require an external pull-up resistor on the RESET pin?
No, MAX6314US28D2-TG01 does not require an external pull-up resistor. Its RESET output integrates a 4.7kΩ passive pullup resistor in parallel with a p-channel active pullup transistor, enabling direct connection to bidirectional µP reset inputs like those on the 68HC11 without additional components.
What is the minimum reset timeout period (tRP) for MAX6314US28D2-TG01?
The MAX6314US28D2-TG01 has a minimum reset timeout period of 20ms. This value is fixed per the D2 suffix and is guaranteed across temperature and supply voltage variations, ensuring sufficient time for microprocessor initialization before release of the reset signal.
Can MAX6314US28D2-TG01 interface with microcontrollers other than the 68HC11?
Yes, MAX6314US28D2-TG01 can interface with any microcontroller featuring a bidirectional reset I/O pin that accepts active-pullup-driven signals, including derivatives of the 68HC11, certain Renesas RL78 devices, and select STMicroelectronics and NXP MCUs with compatible reset architectures - provided the VTH and timing requirements align.
Is the MR (manual reset) input of MAX6314US28D2-TG01 internally pulled up?
Yes, the MR input of MAX6314US28D2-TG01 includes a 63kΩ internal pullup resistor, allowing it to be left floating when unused. A normally open momentary switch connected between MR and GND provides fully debounced manual reset functionality without external components.
MAX6314US28D2-TG01 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:
- 2.8V
- Output:
- Bidirectional
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6314US28D2-TG01 FAQ
1.How can I place an order for MAX6314US28D2-TG01 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US28D2-TG01 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 MAX6314US28D2-TG01 reliable?
The price and inventory of MAX6314US28D2-TG01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US28D2-TG01 is usually 5 days.
3.What payment methods are accepted for MAX6314US28D2-TG01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US28D2-TG01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US28D2-TG01?
MAX6314US28D2-TG01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US28D2-TG01 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 MAX6314US28D2-TG01?
For technical support, including MAX6314US28D2-TG01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US28D2-TG01 requirements.
6.How does Aetrix verify that MAX6314US28D2-TG01 is sourced from the original manufacturer or authorized distributors?
All MAX6314US28D2-TG01 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 MAX6314US28D2-TG01 meets industry standards.
7.What is the process for return or replacement of MAX6314US28D2-TG01?
All MAX6314US28D2-TG01 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US28D2-TG01, 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 MAX6314US28D2-TG01 part is unused and in its original packaging.
Return procedure for MAX6314US28D2-TG01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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