My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6310UK45D4-T
- Part No.:
- MAX6310UK45D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6310UK45D4-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,591
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6310UK45D4-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory circuit that monitors VCC and an external undervoltage input (RST IN) while providing push/pull active-low reset output. It features factory-set 4.5V ±2.5% VCC reset threshold, 1120ms minimum reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1V. It is used in multivoltage embedded systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6310UK45D4-T datasheet, MAX6310UK45D4-T pinout, MAX6310UK45D4-T application, or MAX6310UK45D4-T equivalent, key selection criteria include its dual-supply monitoring capability (VCC + RST IN), fixed 4.5V VCC threshold with ±2.5% tolerance over -40°C to +85°C, 1120ms timeout, manual-reset input with internal 63.5kΩ pull-up, and immunity to fast transients on monitored rails.
Technical Context
The MAX6310UK45D4-T implements a dual-input supervision architecture: one path monitors VCC via an internal factory-trimmed resistor divider set to 4.5V nominal, and a second path monitors an external voltage at RST IN using a precision 1.23V reference with ±25nA leakage. Reset assertion occurs when either input falls below its respective threshold, and the internal timer enforces a minimum 1120ms reset pulse after all inputs recover.
It uses a push/pull output stage capable of sourcing 800µA at VCC > 4.25V and sinking 3.2mA, ensuring robust drive into µP reset pins without external pull-ups. The MR input supports TTL/CMOS logic levels and includes glitch rejection (0.1µs) and 1.5µs minimum pulse width guarantee across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.5V ±2.5% (factory-trimmed); ensures reliable detection of 5V rail collapse before microprocessor malfunction |
| Reset Timeout Period | 1120ms minimum; guarantees sufficient hold time for full system initialization after power stabilization |
| Supply Current | 8µA typical at +25°C; enables use in battery-powered equipment with multi-year standby life |
| RST IN Threshold | 1.23V ±0.03V; allows precise external voltage monitoring (e.g., 3.3V, 2.5V rails) via resistor divider |
| MR Input Pull-up | 63.5kΩ internal; eliminates need for external resistor and supports direct switch-to-ground manual reset |
| RESET Output Type | Active-low push/pull; drives µP reset pins directly without external components or level-shifting |
| Operating Temp Range | -40°C to +85°C; qualified for industrial and automotive under-hood environments |
Pinout & Package
MAX6310UK45D4-T is housed in a 5-pin SOT23 package (outline U5+1), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads suitable for automated PCB assembly and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives microprocessor reset pin directly; sinks 3.2mA or sources 800µA; valid down to VCC = 1V |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance connection |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external rail (e.g., 3.3V) via resistor divider; referenced to 1.23V internal bandgap |
| 4 - MR | Manual-reset input | Active-low; internally pulled up to VCC (63.5kΩ); asserts reset for ≥1.5µs pulse width |
| 5 - VCC | Main supply and primary monitored rail | Powered from 4.5V–5.5V system rail; also monitored by internal trimmed divider for 4.5V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail supervision | Simultaneously monitors VCC (4.5V) and external RST IN (programmable via divider), enabling 5V/3.3V system coverage |
| Transient immunity | Ignores VCC glitches ≤100µs at 50mV overdrive; prevents spurious resets during switching noise or load transients |
| No external components | Factory-programmed threshold and timeout eliminate trimming resistors, capacitors, or timing networks |
| Guaranteed low-VCC operation | RESET remains valid to VCC = 1V, supporting controlled shutdown sequencing in brownout conditions |
| Industrial temperature range | Specified over -40°C to +85°C with guaranteed performance - no derating required for embedded control |
Applications
| Industrial PLC I/O Modules | Medical Patient Monitor Power Sequencing |
|---|---|
Use Scenario: Monitors both 5V main logic rail and isolated 3.3V sensor interface rail in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Dual-input supervisor asserting reset if either rail drops during ESD events or power interruptions. Use Value: Prevents firmware corruption by enforcing 1120ms reset hold time after recovery, ensuring FPGA configuration reload completes. |
Use Scenario: Ensures safe boot sequence in portable diagnostic devices powered by Li-ion batteries with variable 3.0–4.2V output. IC Role / Device Role / Timing Role: Supervises battery-derived 3.3V rail (via RST IN) and regulated 5V USB-charger rail (VCC) to detect undervoltage on either source. Use Value: 8µA quiescent current extends battery runtime; MR input enables nurse-initiated system reboot without power cycle. |
| Automotive Body Control Module | Network Router Power Management |
Use Scenario: Monitors 5V microcontroller supply and 12V-to-5V DC/DC converter feedback node in under-hood ECUs. IC Role / Device Role / Timing Role: Detects VCC sag during cold-crank (down to 6V battery) and RST IN dip indicating regulator failure. Use Value: Immunity to 100µs transients avoids false resets during alternator load dump; -40°C to +85°C rating ensures reliability. |
Use Scenario: Coordinates startup of CPU, PHY, and memory subsystems in enterprise-grade routers with multiple voltage domains. IC Role / Device Role / Timing Role: Uses RST IN to monitor 1.2V core rail and VCC to supervise 3.3V I/O rail, triggering synchronized reset on any fault. Use Value: Push/pull RESET output drives multiple ASIC reset inputs simultaneously without fanout buffers or timing skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6310EUK45D4-T | Extended temperature range (-40°C to +85°C vs. 0°C to +70°C); identical electrical specs and pinout | Required for automotive, industrial, or outdoor deployments where ambient exceeds 70°C | Select MAX6310EUK45D4-T when operating environment exceeds +70°C ambient or requires AEC-Q200 alignment |
| TPS3808G33DBVR | 3.3V fixed VCC threshold; 200ms timeout; open-drain output; no RST IN input; 1.6µA supply current | Suitable only for single-rail 3.3V systems without external monitoring needs | Choose TPS3808G33DBVR only for cost-sensitive, low-power 3.3V-only applications lacking dual-input requirements |
Compared with MAX6310UK45D4-T, the MAX6310EUK45D4-T offers identical functionality with extended temperature qualification, while the TPS3808G33DBVR sacrifices dual-input supervision and programmable timeout for ultra-low quiescent current and lower unit cost in single-rail designs.
Availability
MAX6310UK45D4-T is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive body electronics requiring stable component supply across production lifecycles.
Supply support for MAX6310UK45D4-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 power, sensing, and interface applications in industrial, medical, and communications markets.
The MAX6305–MAX6313 family delivers highly integrated, factory-programmed supervisory circuits optimized for multivoltage embedded systems needing reliable, low-power, dual-input reset generation without external components.
FAQ
What is the factory-set VCC reset threshold for MAX6310UK45D4-T?
The MAX6310UK45D4-T has a factory-set VCC reset threshold of 4.5V with ±2.5% tolerance over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and corresponds to the "45" in the part number. It is designed to reliably detect collapse of a nominal 5V supply before microprocessor operation becomes unstable.
Does MAX6310UK45D4-T support monitoring of an external voltage rail?
Yes, MAX6310UK45D4-T includes an RST IN pin that accepts an external voltage divider to monitor a second rail (e.g., 3.3V or 2.5V). The internal 1.23V reference compares against the divided voltage, allowing precise undervoltage detection independent of the 4.5V VCC threshold. This enables true dual-rail supervision in multivoltage systems.
What is the reset timeout period for MAX6310UK45D4-T?
The MAX6310UK45D4-T provides a factory-programmed minimum reset timeout period of 1120ms, indicated by the "D4" suffix. After all monitored supplies return above their thresholds, the RESET output remains asserted for at least this duration to ensure complete microprocessor initialization and peripheral configuration before release.
Can MAX6310UK45D4-T operate with VCC below 4.5V?
Yes, MAX6310UK45D4-T operates with VCC as low as 1.0V and guarantees valid RESET output down to that level. However, its VCC supervision function activates only when VCC exceeds (4.5V + 2.5%) ≈ 4.61V - meaning it will not assert reset due to VCC drop until the rail falls below ~4.39V (4.5V − 2.5%). Below 4.61V, only RST IN and MR inputs remain functional.
Is MAX6310UK45D4-T pin-compatible with other devices in the MAX6305–MAX6313 family?
Yes, MAX6310UK45D4-T shares the identical SOT23-5 pinout with all members of the MAX6305–MAX6313 family, including MAX6306, MAX6309, and MAX6312. Pin 1 is RESET, Pin 2 is GND, Pin 3 is RST IN, Pin 4 is MR, and Pin 5 is VCC. This allows direct substitution within the same package footprint when functional requirements align.
MAX6310UK45D4-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.5V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6310UK45D4-T FAQ
1.How can I place an order for MAX6310UK45D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6310UK45D4-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 MAX6310UK45D4-T reliable?
The price and inventory of MAX6310UK45D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6310UK45D4-T is usually 5 days.
3.What payment methods are accepted for MAX6310UK45D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6310UK45D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6310UK45D4-T?
MAX6310UK45D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6310UK45D4-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 MAX6310UK45D4-T?
For technical support, including MAX6310UK45D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6310UK45D4-T requirements.
6.How does Aetrix verify that MAX6310UK45D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6310UK45D4-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 MAX6310UK45D4-T meets industry standards.
7.What is the process for return or replacement of MAX6310UK45D4-T?
All MAX6310UK45D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6310UK45D4-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 MAX6310UK45D4-T part is unused and in its original packaging.
Return procedure for MAX6310UK45D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6310UK45D4-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…
