My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6314US26D3+T
- Part No.:
- MAX6314US26D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US26D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:100
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6314US26D3+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., Motorola 68HC11). It features a factory-trimmed 2.63V reset threshold, 140ms minimum reset timeout period, ±2.5% threshold accuracy over temperature, 5µA supply current, and SOT143 package. Used in portable/battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6314US26D3+T datasheet, MAX6314US26D3+T pinout, MAX6314US26D3+T application, or MAX6314US26D3+T equivalent, key selection criteria include bidirectional RESET compatibility, precise 2.63V VTH tolerance across -40°C to +85°C, 140ms timeout timing, manual reset input with internal 63kΩ pullup, and absence of external components for basic operation.
Technical Context
The MAX6314US26D3+T implements a precision voltage-monitoring comparator with laser-trimmed resistive divider to set its 2.63V reset threshold, coupled to an internal timer that guarantees RESET remains active for ≥140ms after VCC rises above threshold or MR deasserts. Its RESET output combines a 4.7kΩ passive pullup with a p-channel active pullup transistor enabled for 2µs upon rising-edge detection - enabling fast rise time on capacitive reset buses.
This architecture supports deterministic reset source identification in bidirectional-reset µPs: the device ensures RESET reaches 0.8×VCC within two E-clock cycles even with multiple devices on the bus, avoiding false external-reset misinterpretation. MR input includes glitch rejection (100ns), 0.3×VCC logic-low threshold, and internal 63kΩ pullup - eliminating external debounce components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH | 2.63V nominal reset threshold; factory-laser-trimmed for ±2.5% accuracy over -40°C to +85°C - ensures consistent brownout detection at defined supply level. |
| tRP | 140ms minimum reset timeout period; internally programmed delay holds RESET low after VCC recovery or MR release - prevents premature µP execution during unstable power. |
| ICC | 5µA typical supply current at +25°C; enables multi-year battery life in portable systems without compromising supervision reliability. |
| RESET Output | Bidirectional structure with 4.7kΩ pullup + p-channel active pullup; allows direct interface to 68HC11-style µPs and supports system-level reset arbitration without external components. |
| MR Input | Logic-low active with 0.3×VCC threshold and 100ns glitch rejection; internal 63kΩ pullup eliminates need for external resistor - simplifies manual reset implementation. |
| VCC Range | 1.0V to 5.5V operating supply; RESET guaranteed low for VCC > 1V and transitions to high-impedance below 1V - supports valid reset assertion across full functional voltage range. |
| Package | SOT143 (4-pin); surface-mount, 1.3mm × 2.9mm footprint - suitable for space-constrained portable and embedded designs. |
Pinout & Package
SOT143 package: 4-pin, single-row, gull-wing lead frame; dimensions 1.3mm × 2.9mm × 1.0mm (L × W × H); rated for -40°C to +85°C ambient operation.
| 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 2.63V - no external sensing components required. |
| MR | Manual reset input | Active-low control; asserts reset when pulled ≤0.3×VCC; internal 63kΩ pullup allows NC or switch-to-GND configuration - no external pullup needed. |
| RESET | Active-low complementary reset output | Bidirectional interface: combines n-channel pulldown with parallel 4.7kΩ pullup + p-channel active pullup - enables µP-driven reset and fast bus rise time. |
| GND | Ground reference | Return path for VCC, MR, and RESET circuits; must be low-impedance connection to maintain reset threshold accuracy and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed VTH | 2.63V threshold set via laser trimming - eliminates calibration effort and ensures ±2.5% accuracy across industrial temperature range. |
| Active pullup RESET | 4.7kΩ resistor + p-channel transistor activated for 2µs - reduces rise time on capacitive reset lines, enabling reliable bidirectional reset arbitration in multi-device systems. |
| Low quiescent current | 5µA typical ICC - extends battery life in portable instrumentation and handheld controllers without sacrificing supervision integrity. |
| Immunity to short transients | 100ns MR glitch rejection and transient duration vs. overdrive curve - prevents spurious resets from ESD or switching noise on VCC or MR lines. |
| No external components | Integrated pullups on MR and RESET, precision voltage reference, and timing capacitor-less timeout - reduces BOM count and PCB area by ≥3 passives. |
Applications
| Portable Medical Monitors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered ECG or glucose meter operating from single Li-ion cell with varying voltage (3.0–4.2V) and intermittent RF transmission causing supply dips. IC Role / Device Role / Timing Role: Supervisory circuit monitoring VCC to detect brownout conditions below 2.63V and assert RESET for controlled µP restart - preventing corrupted sensor data or unsafe actuation. Use Value: 5µA supply current extends operational runtime; 140ms timeout ensures stable power reestablishment before µP resumes sampling; bidirectional RESET enables firmware-based fault diagnostics. |
Use Scenario: DIN-rail mounted PLC module exposed to 24V DC supply fluctuations due to motor switching and long cable runs. IC Role / Device Role / Timing Role: Primary power supervisor asserting hardware reset during undervoltage events; MR pin connected to front-panel pushbutton for field service initiation. Use Value: ±2.5% VTH accuracy ensures consistent trip point despite ambient temperature swings; internal MR pullup eliminates wiring complexity; SOT143 footprint fits dense I/O board layouts. |
| Smart Energy Meters | Automotive Body Control Units |
|
Use Scenario: Revenue-grade electricity meter with dual-supply design (mains-derived + backup supercapacitor) requiring fail-safe reset during AC dropout. IC Role / Device Role / Timing Role: VCC supervisor tracking backup rail voltage; generates clean, debounced reset pulse to ARM Cortex-M µC upon capacitor discharge below 2.63V. Use Value: 140ms timeout matches supercap hold-up time; 100ns MR glitch rejection prevents false triggers from relay coil flyback; no external RC network reduces calibration drift risk. |
Use Scenario: Low-voltage subsystem (e.g., door module) powered from vehicle battery subject to cranking dips (<6V) and load dump transients. IC Role / Device Role / Timing Role: Reset generator ensuring µP enters safe state during cold-crank undervoltage; MR tied to diagnostic test connector for workshop reset. Use Value: Valid RESET assertion down to VCC = 1.0V prevents undefined behavior during deep brownout; SOT143 package withstands automotive thermal cycling; lead-free +T suffix meets AEC-Q200 material requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US26D3+T | Open-drain RESET output (no internal pullup); identical VTH (2.63V), tRP (140ms), and SOT143 package. | Requires external pullup resistor for high-level assertion; unsuitable for bidirectional-reset µPs like 68HC11 but compatible with standard open-drain reset inputs. | Select MAX6315US26D3+T only when interfacing with µPs lacking bidirectional reset capability and external pullup is acceptable. |
| TPS3808G125DBVR | Fixed 1.25V reset threshold; adjustable timeout (1ms–10s via capacitor); 1.5µA ICC; SOT-23-5 package. | Lower VTH targets core voltage monitoring (e.g., 1.2V/1.8V rails); requires external timing capacitor; not pin-compatible. | Choose TPS3808G125DBVR for ultra-low-power core-rail supervision where 2.63V threshold is inappropriate and layout allows SOT-23-5 placement. |
Compared with MAX6314US26D3+T, MAX6315US26D3+T removes bidirectional capability but retains identical threshold and timing - making it a functional alternative only for open-drain systems. TPS3808G125DBVR offers lower ICC and programmable timeout but shifts monitoring to sub-1.8V domains and requires external components, limiting drop-in replacement viability.
Availability
MAX6314US26D3+T is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, smart energy meters, and automotive body control units requiring stable component supply, long-term lifecycle support, and lead-free compliance.
Supply support for MAX6314US26D3+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, mixed-signal, and power management ICs for industrial, computing, communications, and consumer applications - emphasizing high reliability and integration density.
The MAX6314 series delivers cost-effective, single-function µP supervision with factory-trimmed thresholds and integrated timing - targeting space- and power-constrained embedded systems needing dependable power-on and brownout reset functionality.
FAQ
What is the exact reset threshold voltage and accuracy of the MAX6314US26D3+T?
The MAX6314US26D3+T has a nominal reset threshold voltage of 2.63V, factory-laser-trimmed for ±2.5% accuracy over the full operating temperature range (-40°C to +85°C). At +25°C, accuracy tightens to ±1.8%. This ensures consistent brownout detection across environmental conditions without external calibration - a key specification confirmed in the Electrical Characteristics table of the official datasheet.
How does the MAX6314US26D3+T support bidirectional reset interfaces like the Motorola 68HC11?
The MAX6314US26D3+T supports bidirectional reset interfaces through its unique RESET output architecture: a 4.7kΩ pullup resistor in parallel with a p-channel active pullup transistor and n-channel pulldown. When the µP pulls RESET low, the MAX6314US26D3+T releases the line and the active pullup accelerates rise time - enabling the 68HC11 to distinguish between self-initiated and external resets within two E-clock cycles, as documented in the Detailed Description section.
What is the minimum reset timeout period specified for the MAX6314US26D3+T?
The MAX6314US26D3+T provides a minimum reset timeout period (tRP) of 140ms. This internally programmed delay ensures RESET remains asserted for at least 140ms after VCC rises above 2.63V or after the manual reset (MR) input is deasserted - guaranteeing sufficient time for power stabilization before µP execution resumes, per the Ordering Information and Electrical Characteristics tables.
Does the MAX6314US26D3+T require external components for basic operation?
No, the MAX6314US26D3+T requires no external components for fundamental supervision functionality. It integrates a factory-trimmed voltage reference, internal 63kΩ pullup on MR, 4.7kΩ pullup + active p-channel transistor on RESET, and capacitor-less timing - eliminating external resistors, capacitors, or trimming networks. This reduces BOM count, PCB area, and calibration risk while maintaining full performance as verified in the Typical Operating Circuit and Features sections.
What package type and lead finish does the MAX6314US26D3+T use?
The MAX6314US26D3+T uses the SOT143 surface-mount package (4-pin, 1.3mm × 2.9mm) and ships with lead-free finish, indicated by the "+T" suffix in the part number. This complies with RoHS requirements and supports reflow soldering per JEDEC J-STD-020. The package operates across -40°C to +85°C and is explicitly listed in the Ordering Information and Package Information sections of the datasheet.
MAX6314US26D3+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- 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
MAX6314US26D3+T FAQ
1.How can I place an order for MAX6314US26D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US26D3+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 MAX6314US26D3+T reliable?
The price and inventory of MAX6314US26D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US26D3+T is usually 5 days.
3.What payment methods are accepted for MAX6314US26D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US26D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US26D3+T?
MAX6314US26D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US26D3+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 MAX6314US26D3+T?
For technical support, including MAX6314US26D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US26D3+T requirements.
6.How does Aetrix verify that MAX6314US26D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6314US26D3+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 MAX6314US26D3+T meets industry standards.
7.What is the process for return or replacement of MAX6314US26D3+T?
All MAX6314US26D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US26D3+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 MAX6314US26D3+T part is unused and in its original packaging.
Return procedure for MAX6314US26D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6314US26D3+T 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…
