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Analog Devices Inc./Maxim Integrated MAX6314US41D3-T
- Part No.:
- MAX6314US41D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US41D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6314US41D3-T 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 4.10V reset threshold, 140ms minimum reset timeout period, ±1.8% threshold accuracy at +25°C, 5µA supply current, and SOT143 package. It is used in portable/battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6314US41D3-T datasheet, MAX6314US41D3-T pinout, MAX6314US41D3-T application, or MAX6314US41D3-T equivalent, key selection criteria include bidirectional RESET compatibility, precise 4.10V threshold tolerance over temperature, 140ms timeout timing, immunity to short VCC transients, and absence of external components for manual reset debouncing.
Technical Context
The MAX6314US41D3-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set its 4.10V nominal reset threshold. Its reset generator uses an internal timer that guarantees RESET remains asserted for ≥140ms after VCC rises above threshold or MR deasserts.
The device integrates a unique bidirectional RESET output: a 4.7kΩ pull-up resistor in parallel with a P-channel active pullup transistor and N-channel pulldown, enabling direct interface to µPs like the 68HC11 that sample RESET state post-assertion to distinguish internal vs. external reset sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.10V - Factory-trimmed threshold ensures accurate power-fail detection at system VCC rail. |
| tRP Min | 140ms - Guarantees sufficient reset hold time for full µP initialization during power-up or recovery. |
| Threshold Accuracy | ±1.8% at +25°C - Enables robust margining against supply tolerance without external calibration. |
| ICC | 5µA - Ultra-low quiescent current extends battery life in portable applications. |
| VCC Range | 1.0V to 5.5V - Supports operation across wide input range, including partial power-down states. |
| MR Input Threshold | VIL = 0.3×VCC, VIH = 0.7×VCC - Compatible with standard CMOS logic levels without level-shifting. |
| Reset Output Type | Bidirectional with integrated 4.7kΩ pull-up + active P-ch pullup - Eliminates need for external pull-up and enables µP-driven reset sampling. |
Pinout & Package
SOT143 package: 4-pin, surface-mount, -40°C to +85°C operating temperature range, lead-free compatible (replace "-T" with "+T" for RoHS-compliant version).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage and reset threshold monitor input | Primary power rail connection; internally monitored to trigger reset when falling below 4.10V. |
| MR | Manual reset input | Active-low input with internal 63kΩ pull-up; asserts reset when pulled low; no external debounce required. |
| RESET | Active-low bidirectional reset output | Combines N-ch pulldown, 4.7kΩ passive pull-up, and P-ch active pull-up to support µP reset-sampling protocols. |
| GND | Ground reference | Return path for all internal circuitry and reset output current sink/source paths. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET output | Enables 68HC11-style reset source identification by allowing µP to drive RESET low and sample its return-to-high timing. |
| Factory-trimmed 4.10V threshold | Eliminates external resistor network; achieves ±1.8% accuracy at +25°C and ±2.5% over full temperature range. |
| 140ms minimum reset timeout | Ensures µP completes boot sequence before release; immune to brief VCC recovery spikes during brownout. |
| 5µA supply current | Reduces standby power in battery-critical systems; measured at VCC = 5V, TA = +25°C. |
| Immunity to short VCC transients | Rejects glitches ≤100ns duration at 4.10V threshold overdrive (e.g., 10mV dip), per Typical Operating Characteristics graph. |
Applications
| Portable Medical Devices | Industrial PLC Controllers |
|---|---|
|
Use Scenario: Battery-powered glucose meters and handheld diagnostic tools require guaranteed reset assertion during battery voltage sag or insertion. IC Role / Device Role / Timing Role: MAX6314US41D3-T monitors 3.3V or 5V system rail and asserts RESET until stable, then holds for ≥140ms to ensure firmware initialization. Use Value: Prevents corrupted memory writes or erratic behavior during marginal battery conditions; eliminates need for external RC network or Schmitt-trigger circuit. |
Use Scenario: Programmable logic controllers in factory automation must survive line transients and maintain deterministic startup after AC power interruption. IC Role / Device Role / Timing Role: MAX6314US41D3-T provides brownout detection on 5V logic supply and coordinates reset timing with I/O module power sequencing. Use Value: Ensures synchronized controller reboot without watchdog-induced spurious resets; supports manual reset via front-panel switch connected to MR. |
| Smart Energy Meters | Embedded Telematics Units |
|
Use Scenario: Electricity meters with dual-supply (mains + backup battery) must detect VCC drop from AC failure and initiate secure shutdown before nonvolatile memory corruption. IC Role / Device Role / Timing Role: MAX6314US41D3-T triggers reset at 4.10V on main 5V rail, holding RESET active ≥140ms to allow EEPROM write completion. Use Value: Meets IEC 62053-21 data integrity requirements; leverages built-in MR for field-service reset without opening enclosure. |
Use Scenario: Automotive telematics modules powered from vehicle battery (9–16V) with local 5V LDO must survive cold-crank dips and restart reliably after ignition cycling. IC Role / Device Role / Timing Role: MAX6314US41D3-T monitors post-LDO 5V rail and asserts RESET during <4.10V events, sustaining reset for ≥140ms even if VCC recovers briefly. Use Value: Avoids partial boot failures during engine start; bidirectional RESET allows host MCU to log reset cause (power vs. software fault) using 68HC11-compatible protocol. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US41D3-T | Open-drain RESET output (no internal pull-up); identical 4.10V threshold and 140ms timeout. | Requires external 4.7kΩ pull-up; not compatible with bidirectional reset sampling protocols like 68HC11. | Select when system uses open-drain reset bus architecture or shares RESET line with multiple open-drain drivers. |
| TPS3808G33DBVR | Fixed 3.3V threshold; 200ms default timeout (adjustable via capacitor); 1.6µA typical ICC. | Not pin-compatible; lacks MR input; requires external timing capacitor for timeout adjustment. | Select for ultra-low-power 3.3V systems where 4.10V threshold is unnecessary and longer timeout is acceptable. |
Compared with MAX6314US41D3-T, MAX6315US41D3-T removes bidirectional capability but simplifies shared-bus designs, while TPS3808G33DBVR trades threshold flexibility and MR integration for lower ICC and adjustable timing-neither offers pin-for-pin replacement or identical functional behavior.
Availability
MAX6314US41D3-T is available at Aetrix Electronics and suitable for portable medical devices, industrial PLC controllers, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX6314US41D3-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX6314 series was designed specifically for microprocessor supervisory functions in space-constrained, low-power systems-emphasizing precision threshold accuracy, bidirectional reset compatibility, and zero-external-component operation.
FAQ
What is the exact reset threshold voltage of the MAX6314US41D3-T?
The MAX6314US41D3-T has a factory-trimmed nominal reset threshold voltage of 4.10V, with ±1.8% accuracy at +25°C and ±2.5% over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during manufacturing and specified in the Ordering Information table under "NOMINAL VTH (V)".
Does the MAX6314US41D3-T support bidirectional reset communication with the 68HC11 microcontroller?
Yes, the MAX6314US41D3-T is explicitly designed for bidirectional reset compatibility with the Motorola 68HC11 and similar µPs. Its RESET pin combines an N-channel pulldown, 4.7kΩ passive pull-up, and P-channel active pull-up to enable the µP to drive RESET low and subsequently sample its rising edge-allowing distinction between internal and external reset sources.
What is the minimum reset timeout period for the MAX6314US41D3-T?
The MAX6314US41D3-T provides a minimum reset timeout period (tRP) of 140ms. This is the guaranteed duration RESET remains asserted after VCC rises above 4.10V or after the MR input is deasserted, ensuring sufficient time for microprocessor initialization before release.
Can the MAX6314US41D3-T operate with supply voltages below 2.5V?
Yes, the MAX6314US41D3-T operates over a VCC range of 1.0V to 5.5V. While its 4.10V reset threshold is fixed, the device continues to function down to 1.0V-though RESET output sinking capability is guaranteed only for VCC > 1V. Below 1V, RESET becomes high-impedance.
Is a manual reset circuit required for the MAX6314US41D3-T, and how is it implemented?
No external manual reset circuit is required. The MAX6314US41D3-T includes an internal 63kΩ pull-up resistor on the MR pin. To implement manual reset, connect a normally open momentary switch from MR to GND; the device provides internal debouncing, eliminating need for external RC networks or Schmitt triggers.
MAX6314US41D3-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:
- 4.1V
- Output:
- Bidirectional
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6314US41D3-T FAQ
1.How can I place an order for MAX6314US41D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US41D3-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 MAX6314US41D3-T reliable?
The price and inventory of MAX6314US41D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US41D3-T is usually 5 days.
3.What payment methods are accepted for MAX6314US41D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US41D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US41D3-T?
MAX6314US41D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US41D3-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 MAX6314US41D3-T?
For technical support, including MAX6314US41D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US41D3-T requirements.
6.How does Aetrix verify that MAX6314US41D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6314US41D3-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 MAX6314US41D3-T meets industry standards.
7.What is the process for return or replacement of MAX6314US41D3-T?
All MAX6314US41D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US41D3-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 MAX6314US41D3-T part is unused and in its original packaging.
Return procedure for MAX6314US41D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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