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Analog Devices Inc./Maxim Integrated MAX6307UK30D4-T
- Part No.:
- MAX6307UK30D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6307UK30D4-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,199
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Product details
Overview
MAX6307UK30D4-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set 3.0V reset 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/brownout reset control.
For engineers reviewing the MAX6307UK30D4-T datasheet, MAX6307UK30D4-T pinout, MAX6307UK30D4-T application, or MAX6307UK30D4-T equivalent, this page delivers verified specifications, real-world timing behavior, thermal stability data, factory-trimmed threshold accuracy, and validated alternative options for dual-supply monitoring designs.
Technical Context
The MAX6307UK30D4-T implements a triple-input supervision architecture: internal factory-trimmed voltage divider sets VCC reset at 3.0V ±2.5% over -40°C to +85°C; RST IN compares external voltage to 1.23V reference with ±25nA leakage; OVRST IN provides overvoltage detection using same reference. All inputs reject transients ≤10µs at 100mV overdrive.
Its push/pull RESET output drives low to <0.3V at 1.2mA load and sources up to 0.8×VCC when high, enabling direct interface with CMOS/TTL logic without pull-up resistors. The 1120ms timeout (D4 variant) is factory-programmed and stable across temperature (±0.5% variation).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.0V ±2.5% (factory-trimmed); ensures reliable reset assertion during 3.3V rail brownout |
| Reset Timeout Period | 1120ms minimum (D4); guarantees µP initialization completes before release |
| Supply Current | 8µA typical at +25°C; enables battery-powered operation for >10 years on coin cell |
| RESET Output Type | Push/pull active-low; eliminates external pull-up and supports direct µP reset pin drive |
| Operating Temperature | -40°C to +85°C; qualified for industrial and automotive under-hood environments |
| RST IN / OVRST IN Threshold | 1.23V ±0.03V reference; allows precise external resistor-divider programming of custom thresholds |
| Transient Immunity | Rejects VCC glitches ≤10µs at 100mV overdrive; prevents false resets in noisy power systems |
Pinout & Package
MAX6307UK30D4-T is housed in a 5-pin SOT23 package (outline U5+1, land pattern 90-0174), optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives low to <0.3V @ 1.2mA; sources up to 0.8×VCC; directly interfaces µP reset pins |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance |
| 3 - OVRST IN | Overvoltage reset comparator input | Asserts RESET when external voltage exceeds programmed threshold via resistor divider |
| 4 - RST IN | Undervoltage reset comparator input | Asserts RESET when external voltage falls below programmed threshold via resistor divider |
| 5 - VCC | Main supply and primary monitored rail | Supplies IC and triggers reset if drops below 3.0V ±2.5%; valid operation down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneously supervises VCC (3.0V), RST IN (user-programmable), and OVRST IN (user-programmable) |
| Factory-trimmed precision | 3.0V threshold with ±2.5% tolerance over full temperature range; no calibration required |
| No external components | Operates standalone-no capacitors, resistors, or trim pots needed for basic VCC supervision |
| Glitch-immune design | Rejects VCC transients ≤10µs duration; eliminates need for additional RC filtering |
| Low-power operation | 8µA supply current enables integration into always-on battery-backed subsystems |
Applications
| Industrial PLC I/O Module | Medical Patient Monitor |
|---|---|
Use Scenario: Monitors 3.3V microcontroller core rail and 5V analog sensor supply in a DIN-rail mounted controller exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Triple-input supervisor asserting RESET until both rails stabilize post-power-up and remain valid during line sags. Use Value: Prevents firmware corruption during 1120ms power sequencing window; eliminates need for discrete reset circuitry per rail. |
Use Scenario: Ensures safe boot of ARM-based patient monitor with isolated 3.3V digital domain and 12V high-voltage therapy circuitry. IC Role / Device Role / Timing Role: Uses RST IN to supervise isolated 3.3V rail and OVRST IN to detect dangerous overvoltage on therapy supply. Use Value: Dual-threshold detection enables fail-safe shutdown before therapy delivery begins; meets IEC 60601-1 reset integrity requirements. |
| Automotive Infotainment Head Unit | Smart Energy Meter |
Use Scenario: Supervises 5V main processor rail and 3.3V CAN transceiver rail in a vehicle environment subject to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: VCC monitoring detects brownout during engine cranking; OVRST IN guards against 12V system overvoltage events. Use Value: 10µs transient immunity prevents false resets during ISO 7637-2 pulse 4; D4 timeout ensures complete SoC initialization. |
Use Scenario: Manages power-on reset sequence for metrology SoC and secure element in a tamper-resistant utility meter operating 20+ years on lithium battery. IC Role / Device Role / Timing Role: Monitors 3.0V backup rail (VCC) and 1.8V secure element supply (via RST IN) with ultra-low ICC. Use Value: 8µA quiescent current extends battery life beyond 15 years; factory-trimmed threshold avoids calibration drift over lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-input supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6307UK30D3-T | 140ms minimum reset timeout (vs. 1120ms); identical pinout, thresholds, and features | Suitable for faster-booting systems where extended hold-off is unnecessary | Select when shorter reset duration reduces system startup latency without compromising reliability |
| TPS3808G30DBVR | Single-input (VDD only), 3.0V threshold, open-drain output; 2% accuracy vs. 2.5%, 1.6µA ICC | Lacks RST IN/OVRST IN capability; requires external circuitry for multi-rail monitoring | Choose only for cost-sensitive single-rail applications where dual/threshold supervision is not required |
Compared with MAX6307UK30D4-T, the D3 variant offers faster reset release but less margin for slow-ramping supplies, while TPS3808G30DBVR reduces cost and current draw at the expense of supervision flexibility and integrated overvoltage detection.
Availability
MAX6307UK30D4-T is available at Aetrix Electronics and suitable for industrial PLCs, medical monitors, automotive infotainment units, smart energy meters, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6307UK30D4-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, automotive, and computing applications.
The MAX6305–MAX6313 family was designed specifically for multivoltage system supervision-enabling simultaneous monitoring of 3.3V/5V, 5V/12V, or 5V/24V rails with factory-programmed thresholds and zero external components.
FAQ
What is the exact factory-programmed reset threshold voltage for MAX6307UK30D4-T?
The MAX6307UK30D4-T has a factory-trimmed VCC reset threshold of 3.0V with ±2.5% tolerance over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during production and documented in the Electrical Characteristics table under "Reset Threshold (VTH)" for MAX6307 devices. It is not user-adjustable and applies exclusively to the VCC pin.
Does MAX6307UK30D4-T support manual reset functionality?
No, MAX6307UK30D4-T does not include a manual reset (MR) input. Per the Selector Table and Pin Description, MR is present only on MAX6306/MAX6309/MAX6312 variants. The MAX6307UK30D4-T provides three supervision inputs: VCC (3.0V), RST IN (undervoltage), and OVRST IN (overvoltage), but no dedicated MR pin.
What is the guaranteed RESET output behavior when VCC drops below 1V?
MAX6307UK30D4-T guarantees RESET remains valid (low) down to VCC = 1V. Below 1V, the push/pull driver's sink capability degrades significantly. The datasheet explicitly states RESET is *not recommended* for applications requiring valid output below 1V, as it may float due to reduced sinking strength-unlike open-drain variants that rely on external pull-ups.
How is the 1120ms reset timeout period implemented in MAX6307UK30D4-T?
The 1120ms minimum reset timeout (D4) in MAX6307UK30D4-T is factory-programmed using on-chip RC timing elements. It is temperature-stable (±0.5% variation over -40°C to +85°C per Typical Operating Characteristics plot TOC05) and begins timing only after *all* monitored inputs (VCC, RST IN, OVRST IN) exceed their respective thresholds. The timeout is non-adjustable and integral to the die design.
Can MAX6307UK30D4-T monitor a negative voltage rail?
No, MAX6307UK30D4-T cannot monitor negative voltages. Its RST IN and OVRST IN inputs are referenced to GND and require positive input voltages between 0V and VCC – 0.3V. The absolute maximum rating for all pins is -0.3V, and the internal 1.23V reference is GND-referred. Monitoring negative rails would violate electrical limits and damage the device.
MAX6307UK30D4-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:
- 3V, 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
MAX6307UK30D4-T FAQ
1.How can I place an order for MAX6307UK30D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6307UK30D4-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 MAX6307UK30D4-T reliable?
The price and inventory of MAX6307UK30D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6307UK30D4-T is usually 5 days.
3.What payment methods are accepted for MAX6307UK30D4-T?
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4.How is shipping managed for MAX6307UK30D4-T?
MAX6307UK30D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6307UK30D4-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 MAX6307UK30D4-T?
For technical support, including MAX6307UK30D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6307UK30D4-T requirements.
6.How does Aetrix verify that MAX6307UK30D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6307UK30D4-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 MAX6307UK30D4-T meets industry standards.
7.What is the process for return or replacement of MAX6307UK30D4-T?
All MAX6307UK30D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6307UK30D4-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 MAX6307UK30D4-T part is unused and in its original packaging.
Return procedure for MAX6307UK30D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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