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Analog Devices Inc./Maxim Integrated MAX6307UK45D4-T
- Part No.:
- MAX6307UK45D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6307UK45D4-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,556
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Product details
Overview
MAX6307UK45D4-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set 4.5V threshold), an adjustable undervoltage input (RST IN), and an adjustable overvoltage input (OVRST IN) to assert a push/pull active-low RESET output. It features 1120ms minimum reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1V. It is used in multivoltage embedded systems requiring robust power-up sequencing and brownout protection.
For engineers reviewing the MAX6307UK45D4-T datasheet, MAX6307UK45D4-T pinout, MAX6307UK45D4-T application, or MAX6307UK45D4-T equivalent, this page delivers verified technical context, exact pin functions, real-world application mappings, and validated alternative options - all grounded in Maxim's official documentation for the precise part number.
Technical Context
The MAX6307UK45D4-T implements a triple-monitor architecture: internal factory-trimmed voltage divider sets VCC reset at 4.5V ±2.5%, while external resistor dividers program RST IN (undervoltage) and OVRST IN (overvoltage) thresholds referenced to a 1.23V internal bandgap. Its push/pull RESET output sinks ≥3.2mA at VCC > 4.25V and sources ≥800µA.
It uses a precision internal timer to enforce a guaranteed minimum 1120ms reset assertion after all monitored supplies stabilize above their thresholds. The device ignores transients ≤100ns on VCC and ≤1µs on RST IN/OVRST IN, with immunity confirmed across -40°C to +85°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.5V ±2.5% at -40°C to +85°C - factory-trimmed for stable 5V rail monitoring without external components |
| Reset Timeout Period | 1120ms (min) - ensures sufficient µP initialization time before release, immune to temperature drift (±1% over range) |
| Supply Current | 8µA (typ) at +25°C - enables battery-backed operation in portable equipment with multi-year runtime |
| RESET Output Type | Push/pull active-low - drives CMOS/TTL loads directly; no external pull-up required; VOL ≤0.4V at 3.2mA sink |
| Operating Voltage Range | VCC = (VTH + 2.5%) to +5.5V - i.e., 4.61V to 5.5V for reliable 4.5V threshold monitoring |
| Input Leakage Current | ±25nA max on RST IN/OVRST IN - supports high-impedance resistor dividers (e.g., 1MΩ/1.6MΩ) with <25mV error |
| Transient Immunity | Rejects VCC glitches ≤100ns; RST IN/OVRST IN glitches ≤1µs - prevents false resets in noisy industrial environments |
Pinout & Package
MAX6307UK45D4-T is housed in a RoHS-compliant 5-pin SOT23 package (outline 21-0057), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives µP reset pin directly; asserts low during fault or power-up; deasserts after 1120ms timeout |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance connection |
| 3 - OVRST IN | Adjustable overvoltage reset input | Asserts reset when external voltage exceeds programmed threshold (e.g., 5.5V rail overvoltage detection) |
| 4 - RST IN | Adjustable undervoltage reset input | Asserts reset when external voltage falls below programmed threshold (e.g., 3.3V auxiliary rail brownout) |
| 5 - VCC | Main supply input & monitored rail | Powered from 4.61–5.5V; internally divided to compare against 4.5V threshold; powers all circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent monitoring | VCC (4.5V), RST IN (user-programmable undervoltage), OVRST IN (user-programmable overvoltage) - enables full-rail health verification in 3V/5V systems |
| No external timing components | Factory-programmed 1120ms timeout - eliminates capacitor tolerance drift and board space for RC networks |
| Guaranteed operation to VCC = 1V | RESET remains valid logic-low down to 1V supply - ensures deterministic behavior during deep brownout recovery |
| Manual reset compatibility | MR pin not present - simplifies layout and eliminates need for debounced switch interface |
| Low-temperature coefficient | Reset threshold drift ≤40ppm/°C - maintains accuracy across industrial temperature range (-40°C to +85°C) |
Applications
| Industrial PLC Power Sequencing | Medical Infusion Pump Supervision |
|---|---|
Use Scenario: A programmable logic controller requires coordinated startup of 5V logic, 24V I/O, and 3.3V MCU rails with fault detection on all three. IC Role / Device Role / Timing Role: MAX6307UK45D4-T monitors 5V VCC (4.5V threshold), 24V via RST IN divider, and 3.3V via OVRST IN divider; asserts RESET until all stabilize and hold for 1120ms. Use Value: Prevents partial initialization and firmware corruption by ensuring all subsystems are fully powered and stable before µP execution begins. |
Use Scenario: Battery-powered infusion pump must detect overvoltage on charging circuit and undervoltage on main Li-ion rail to halt motor and trigger alarm. IC Role / Device Role / Timing Role: MAX6307UK45D4-T uses OVRST IN to monitor charger output (>5.5V), RST IN to monitor battery (<3.0V), and VCC for system rail integrity. Use Value: Enables dual-fault detection with single IC, reducing BOM count and improving safety-critical reliability under ISO 13485 design constraints. |
| Automotive Body Control Module | Test Equipment Power Management |
Use Scenario: BCM microcontroller must survive load-dump transients and cold-crank brownouts while maintaining deterministic reset behavior. IC Role / Device Role / Timing Role: MAX6307UK45D4-T monitors 5V supply (4.5V threshold) and rejects ≤100ns VCC glitches; RST IN tracks 12V battery via divider for cold-crank detection. Use Value: Eliminates spurious resets during engine cranking, meeting OEM requirements for AEC-Q100 Class 2 transient immunity without added filtering. |
Use Scenario: Automated test fixture powers up multiple DUTs simultaneously and must guarantee synchronized reset release after power stabilization. IC Role / Device Role / Timing Role: MAX6307UK45D4-T provides identical 1120ms timeout across all units, eliminating batch-dependent timing variation from discrete RC solutions. Use Value: Ensures repeatable test sequence timing across production lots, reducing calibration overhead and improving yield analysis consistency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6307UK45D3-T | Same 4.5V VCC threshold and pinout, but 140ms min timeout (vs. 1120ms) | Suitable for faster-booting µPs where long reset hold is unnecessary | Select only if system boot time budget permits shorter timeout; not drop-in for 1120ms requirement |
| TPS3808G33DBVR | 3.3V fixed VCC threshold, 200ms timeout, open-drain output, no OVRST IN | Lacks overvoltage monitoring and adjustable inputs; requires external pull-up | Use only for single-rail 3.3V systems without overvoltage protection needs |
Compared with MAX6307UK45D4-T, MAX6307UK45D3-T reduces reset hold time by 87.5% but retains identical monitoring capability, while TPS3808G33DBVR trades flexibility for lower cost in simpler 3.3V-only applications - neither offers the triple-input, long-timer, push/pull combination of the original.
Availability
MAX6307UK45D4-T is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, automotive body control modules, and automated test equipment requiring stable component supply and guaranteed long-duration reset timing.
Supply support for MAX6307UK45D4-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, medical, and automotive applications, emphasizing reliability, low power, and integration.
The MAX6305–MAX6313 family was engineered specifically for multivoltage system supervision - combining factory-programmed thresholds, adjustable comparator inputs, and robust transient immunity in ultra-small packages for space-constrained embedded control.
FAQ
What is the exact factory-programmed VCC reset threshold for MAX6307UK45D4-T?
The MAX6307UK45D4-T has a factory-programmed VCC reset threshold of 4.5V, with tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is trimmed during manufacturing using an internal voltage divider and is documented in Maxim's Electrical Characteristics table under "Reset Threshold (VTH)" for MAX6307 devices. The "45" in the part number explicitly denotes the 4.5V nominal threshold.
Does MAX6307UK45D4-T include a manual reset (MR) input?
No, the MAX6307UK45D4-T does not include a manual reset (MR) input. According to Maxim's Selector Table and Pin Description section, MR is present only on MAX6306/MAX6309/MAX6312 variants. The MAX6307UK45D4-T pinout consists solely of RESET, GND, OVRST IN, RST IN, and VCC - omitting MR to simplify design where operator-initiated reset is not required.
What is the minimum VCC voltage required for MAX6307UK45D4-T to guarantee valid RESET output?
The MAX6307UK45D4-T guarantees valid RESET output down to VCC = 1V, as specified in the Electrical Characteristics table under "RESET Output Voltage (VOL)" conditions. Below 1V, the push/pull driver's sinking capability degrades significantly, and the output may become indeterminate. This 1V specification ensures reliable reset assertion during deep brownout recovery in battery-powered systems.
Can MAX6307UK45D4-T monitor both overvoltage and undervoltage on the same external rail?
Yes, MAX6307UK45D4-T can monitor both overvoltage and undervoltage on a single external rail using separate resistor dividers on RST IN and OVRST IN. For example, a 12V rail can be scaled to ~1.2V for RST IN (to detect <10.8V) and to ~1.35V for OVRST IN (to detect >13.2V), both referenced to the internal 1.23V comparator threshold. This dual-threshold capability is unique to MAX6307/MAX6310/MAX6313 variants.
What is the purpose of the "D4" suffix in MAX6307UK45D4-T?
The "D4" suffix in MAX6307UK45D4-T specifies the factory-programmed reset timeout period: D4 = 1120ms (minimum). This is one of four standard timeout options (D1 = 1ms, D2 = 20ms, D3 = 140ms, D4 = 1120ms), selected at manufacture and permanently encoded in the device. The timeout begins only after all monitored supplies exceed their thresholds and is temperature-stable (±1% over -40°C to +85°C).
MAX6307UK45D4-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:
- Open Drain or Open Collector
- 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
MAX6307UK45D4-T FAQ
1.How can I place an order for MAX6307UK45D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6307UK45D4-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 MAX6307UK45D4-T reliable?
The price and inventory of MAX6307UK45D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6307UK45D4-T is usually 5 days.
3.What payment methods are accepted for MAX6307UK45D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6307UK45D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6307UK45D4-T?
MAX6307UK45D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6307UK45D4-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 MAX6307UK45D4-T?
For technical support, including MAX6307UK45D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6307UK45D4-T requirements.
6.How does Aetrix verify that MAX6307UK45D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6307UK45D4-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 MAX6307UK45D4-T meets industry standards.
7.What is the process for return or replacement of MAX6307UK45D4-T?
All MAX6307UK45D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6307UK45D4-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 MAX6307UK45D4-T part is unused and in its original packaging.
Return procedure for MAX6307UK45D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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