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Analog Devices Inc./Maxim Integrated MAX6314US46D3-T
- Part No.:
- MAX6314US46D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US46D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,436
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Product details
Overview
MAX6314US46D3-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory circuit that monitors VCC and an external undervoltage input (RST IN), asserting an active-high push/pull RESET output when either falls below its threshold. It features a factory-set 4.6V ±2.5% VCC reset threshold, 140ms (min) reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1.0V. It is used in multivoltage embedded systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6314US46D3-T datasheet, MAX6314US46D3-T pinout, MAX6314US46D3-T application, or MAX6314US46D3-T equivalent, this page delivers verified functional identity, exact reset threshold and timeout, SOT23-5 package mapping, confirmed manual-reset capability, and two validated alternative parts for dual-supply monitoring applications.
Technical Context
The MAX6314US46D3-T belongs to the MAX6305–MAX6313 family of multi-input supervisory ICs. It implements a factory-trimmed internal voltage divider to monitor VCC against a 4.6V nominal threshold, while also accepting an external resistor-divided voltage on RST IN for secondary undervoltage detection. Its reset generator guarantees assertion for ≥140ms after all monitored supplies recover.
This device uses an active-high push/pull RESET output capable of sourcing 150µA at VCC > 1.8V and sinking 1.2mA at VCC > 2.5V. It includes a manual-reset (MR) input with internal 63.5kΩ pull-up, supporting TTL/CMOS logic levels and providing noise immunity via optional 0.1µF MR-to-GND capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.6V ±2.5% (factory-trimmed); ensures reliable reset assertion when main supply drops below 4.487V at +25°C |
| Reset Timeout Period | 140ms minimum; holds RESET high long enough to fully initialize microprocessors after power recovery |
| Supply Current | 8µA typical at VCC = 5.5V; enables use in battery-powered portable equipment with minimal quiescent drain |
| RESET Output Type | Active-high push/pull; eliminates need for external pull-up resistor and supports direct interface to µP reset pins |
| Operating Voltage Range | VCC = (4.6V × 1.025) to +5.5V ≈ 4.71V to 5.5V; defines valid supply window for accurate VCC monitoring |
| MR Input Logic Levels | VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC; compatible with 3.3V and 5V logic families without level-shifting |
| Guaranteed RESET Validity | Valid down to VCC = 1.0V; ensures deterministic reset state during deep brownout conditions |
Pinout & Package
MAX6314US46D3-T is housed in a RoHS-compliant 5-pin SOT23-5 surface-mount package (outline U5+1, land pattern 90-0174), optimized for space-constrained PCB layouts in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push/pull reset output | Drives µP reset pin directly; sources ≥150µA at VCC > 1.8V, sinks ≥1.2mA at VCC > 2.5V |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance for noise immunity |
| 3 - RST IN | Adjustable undervoltage reset input | Accepts external resistor divider; asserts reset when input falls below 1.23V reference |
| 4 - MR | Manual-reset input | Pull low to force reset; internal 63.5kΩ pull-up allows floating connection if unused |
| 5 - VCC | Main supply input and monitored rail | Power source and primary reset trigger; monitored via internal factory-trimmed divider set to 4.6V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 4.6V VCC threshold | Eliminates external resistor network for primary supply monitoring, reducing BOM count and layout area |
| 140ms minimum reset timeout | Ensures sufficient hold time for slow-starting regulators and complex µP boot sequences |
| Immunity to fast VCC transients | Rejects negative-going glitches ≤100ns at 4.6V overdrive, preventing spurious resets in noisy environments |
| Manual-reset input with internal pull-up | Enables field-service reset without external components; supports momentary switch or logic-level control |
| No external components required | Reduces design complexity and qualification effort-only bypass capacitor recommended near VCC pin |
Applications
| Industrial PLC Power Sequencing | Medical Portable Monitor Battery Backup |
|---|---|
|
Use Scenario: A programmable logic controller powers up multiple I/O modules with staggered enable timing, requiring coordinated reset release after all rails stabilize. IC Role / Device Role / Timing Role: MAX6314US46D3-T monitors main 5V rail and auxiliary 3.3V logic supply via RST IN, asserting RESET until both exceed thresholds and holding it for 140ms. Use Value: Prevents race conditions between CPU initialization and peripheral configuration by guaranteeing synchronized reset deassertion across subsystems. |
Use Scenario: A handheld patient monitor operates from rechargeable Li-ion (4.2V–3.0V) and switches to backup coin cell (3.0V) during main battery depletion. IC Role / Device Role / Timing Role: MAX6314US46D3-T monitors main battery via VCC (4.6V threshold) and backup rail via RST IN, triggering clean switchover reset before brownout-induced data corruption. Use Value: Maintains clinical data integrity by forcing controlled reboot before voltage collapse, avoiding undefined µP states during critical measurements. |
| Automotive Infotainment Head Unit | Network Router Power Management |
|
Use Scenario: An automotive head unit receives unregulated 12V input converted to 5V and 3.3V rails; transient load dumps cause brief dips on 5V line. IC Role / Device Role / Timing Role: MAX6314US46D3-T monitors 5V rail (VCC) and 3.3V rail (RST IN), asserting RESET only on sustained dips >140ms-ignoring <100ns transients. Use Value: Avoids nuisance reboots during engine cranking or alternator ripple, improving system robustness without sacrificing safety-critical reset coverage. |
Use Scenario: A managed Ethernet switch powers up PoE-powered ports sequentially, requiring stable core logic before enabling port controllers. IC Role / Device Role / Timing Role: MAX6314US46D3-T monitors 5V core supply (VCC) and 12V PoE management rail (RST IN), delaying RESET deassertion until both are valid and timed. Use Value: Enables safe power sequencing by ensuring CPU firmware loads before enabling high-current port drivers, preventing inrush-related failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6312US46D3-T | Same 4.6V VCC threshold and 140ms timeout, but adds overvoltage reset input (OVRST IN) | Required where 5V rail overvoltage protection (e.g., regulator fault) is mandated alongside undervoltage monitoring | Select MAX6312US46D3-T only if OVRST IN functionality is needed; otherwise MAX6314US46D3-T offers lower cost and simpler routing |
| TPS3808G33DBVR | Fixed 3.3V threshold, 200ms timeout, 1.8–6.0V operating range, open-drain output | Suitable for single-rail 3.3V systems; lacks RST IN input and manual reset, requires external pull-up | Choose TPS3808G33DBVR for cost-sensitive 3.3V-only designs without secondary monitoring; not a drop-in replacement for MAX6314US46D3-T |
Compared with MAX6312US46D3-T, MAX6314US46D3-T omits overvoltage detection to reduce pin count and simplify layout, while retaining identical VCC/RST IN monitoring and reset timing-making it optimal for undervoltage-only dual-rail systems. Versus TPS3808G33DBVR, it supports higher VCC thresholds and dual-input supervision but requires no external pull-up due to push/pull output.
Availability
MAX6314US46D3-T is available at Aetrix Electronics and suitable for industrial PLCs, medical portable monitors, automotive infotainment units, and network routers requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX6314US46D3-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) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and computing applications, emphasizing reliability, low power, and integration.
MAX6314US46D3-T belongs to the MAX6305–MAX6313 programmable supervisory family, engineered specifically for multivoltage embedded systems needing precise, low-quiescent-current reset generation with flexible input monitoring.
FAQ
What is the exact factory-set reset threshold voltage for MAX6314US46D3-T?
The MAX6314US46D3-T has a factory-trimmed VCC reset threshold of 4.6V with ±2.5% tolerance over the -40°C to +85°C temperature range. This value is confirmed in the Electrical Characteristics table under "Reset Threshold (VTH)" for MAX6312/MAX6313 devices, and aligns with the "46" suffix per Table 1 (4.561V min / 4.699V max at +25°C).
Does MAX6314US46D3-T support manual reset functionality?
Yes, MAX6314US46D3-T includes a dedicated MR (manual-reset) input (Pin 4) with internal 63.5kΩ pull-up. Driving MR low forces RESET assertion for the full 140ms timeout period, even if VCC and RST IN remain valid. This feature is explicitly documented in the Pin Description and Detailed Description sections.
What is the function of the RST IN pin on MAX6314US46D3-T?
The RST IN pin (Pin 3) on MAX6314US46D3-T serves as an adjustable undervoltage reset input. It compares an externally divided voltage against an internal 1.23V reference; when the input falls below this threshold, it triggers RESET assertion independently of the 4.6V VCC monitor. This enables dual-rail supervision in systems with asymmetric supply requirements.
Is MAX6314US46D3-T compatible with 3.3V logic systems?
Yes, MAX6314US46D3-T supports 3.3V logic compatibility through its MR input, which accepts VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC. With VCC = 4.6V–5.5V, MR remains compatible with standard 3.3V CMOS outputs. Its RESET output is push/pull and drives high to VCC, so interfacing with 3.3V µPs requires no level shifter if VCC is derived from a 5V rail.
What package type and RoHS status does MAX6314US46D3-T use?
MAX6314US46D3-T is supplied in a 5-pin SOT23-5 package (package code U5+1) with lead-free termination. The "-T" suffix denotes tape-and-reel packaging with RoHS-compliant materials, as confirmed in the Ordering Information section and Package Information table.
MAX6314US46D3-T 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:
- 4.63V
- 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
MAX6314US46D3-T FAQ
1.How can I place an order for MAX6314US46D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US46D3-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 MAX6314US46D3-T reliable?
The price and inventory of MAX6314US46D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US46D3-T is usually 5 days.
3.What payment methods are accepted for MAX6314US46D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US46D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US46D3-T?
MAX6314US46D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US46D3-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 MAX6314US46D3-T?
For technical support, including MAX6314US46D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US46D3-T requirements.
6.How does Aetrix verify that MAX6314US46D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6314US46D3-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 MAX6314US46D3-T meets industry standards.
7.What is the process for return or replacement of MAX6314US46D3-T?
All MAX6314US46D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US46D3-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 MAX6314US46D3-T part is unused and in its original packaging.
Return procedure for MAX6314US46D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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