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Analog Devices Inc./Maxim Integrated MAX6715UTSHD3+
- Part No.:
- MAX6715UTSHD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6715UTSHD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6715UTSHD3+ from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms minimum reset timeout, push-pull active-low RST output, manual reset input, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and server board management.
For engineers reviewing the MAX6715UTSHD3+ datasheet, MAX6715UTSHD3+ pinout, MAX6715UTSHD3+ application, or MAX6715UTSHD3+ equivalent, key selection factors include dual-supply threshold accuracy (±1.5% over temp), ultra-low 14µA supply current at 3.6V, immunity to sub-20µs VCC transients, and compatibility with 1.8V/3.3V core-I/O rail systems requiring deterministic reset assertion.
Technical Context
The MAX6715UTSHD3+ integrates two independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), a 210ms reset timeout timer, and push-pull RST output referenced to VCC1. It asserts reset when either supply falls below its threshold and holds reset for the full timeout after recovery.
It features an internal 50kΩ pullup on MR, supports manual reset pulse widths ≥1µs, guarantees valid reset logic state at VCC1/VCC2 ≥ 0.8V, and exhibits 20ppm/°C reset threshold tempco with 0.5% hysteresis - enabling robust brownout detection in multirail embedded systems without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±1.5% over -40°C to +85°C) - sets precise 5V rail monitoring point for CPU core power-up validation |
| VCC2 Threshold | 3.075V (factory-trimmed, ±1.5% over -40°C to +85°C) - matches standard 3.3V I/O rail for coordinated system reset timing |
| Reset Timeout | 210ms (minimum) - ensures sufficient hold time for FPGA configuration or DRAM initialization before processor release |
| Supply Current | 14µA (typical at 3.6V) - enables always-on supervision in battery-backed systems with negligible quiescent drain |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup resistor, drives directly into µP reset pin with VOH ≥ 0.8×VCC1 |
| MR Input | Active-low with 50kΩ internal pullup to VCC1 - supports momentary switch interface without external biasing or debounce circuitry |
| Operating Temp | -40°C to +85°C - qualified for industrial-grade telecom and server motherboard environments |
Pinout & Package
MAX6715UTSHD3+ is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant, with gull-wing leads and thermal pad not connected internally.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR activation |
| 2 | GND | Analog/digital ground reference for all comparators, timers, and output drivers |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; reset persists for full timeout after MR release |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and sets VTH2 = 3.075V |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers device core and sets VTH1 = 4.625V |
| 6 | NC | No connect - unused pin per MAX6715 variant; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 (4.625V) and VCC2 (3.075V) supervision with separate comparators - eliminates need for discrete supervisor ICs in dual-rail systems |
| Guaranteed reset validity at low VCC | Outputs remain functional and logic-valid even when VCC1 or VCC2 drops to 0.8V - critical for graceful shutdown during brownout conditions |
| Immunity to short VCC transients | Rejects negative-going glitches <20µs wide (at 100mV overdrive) - prevents spurious resets during switching noise or load transients |
| Precision threshold tempco | 20ppm/°C drift - maintains ±1.5% threshold accuracy across full industrial temperature range without calibration |
| Low-power operation | 14µA typical ICC at 3.6V - enables integration into always-on power domains without compromising battery life or thermal budget |
Applications
| Telecom Power Sequencing | Server Board Management |
|---|---|
|
Use Scenario: Coordinating startup of 48V DC-DC converters, 12V intermediate bus, and 1.8V/3.3V point-of-load rails in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-threshold supervisor ensuring VCC1 (5V aux) and VCC2 (3.3V I/O) stabilize before releasing CPU reset, with 210ms timeout accommodating slow-start converters. Use Value: Prevents race conditions between power rails and processor, eliminating boot failures caused by premature core enablement. |
Use Scenario: Monitoring primary (5V) and secondary (3.3V) supplies on x86 server motherboards with IPMI-based BMC control. IC Role / Device Role / Timing Role: Provides deterministic reset assertion during AC loss, cold boot, and BMC-initiated warm reset via MR pin. Use Value: Enables reliable firmware recovery without external RC networks or additional supervision logic, reducing BOM count by one IC. |
| Industrial PLC Controller | Network Switch ASIC Power-Up |
|
Use Scenario: Ensuring safe startup of ARM Cortex-M7 MCU and isolated CAN/RS-485 PHYs powered from split 3.3V/5V rails in harsh EMI environments. IC Role / Device Role / Timing Role: Supervises both rails with push-pull RST driving MCU reset directly; MR pin tied to front-panel reset button. Use Value: Guarantees reset remains asserted until both rails exceed thresholds and hold for 210ms - preventing lockup during noisy factory floor power events. |
Use Scenario: Validating power integrity for multi-die switch ASICs requiring strict sequencing of 0.85V core, 1.2V memory, and 3.3V I/O supplies. IC Role / Device Role / Timing Role: Monitors 3.3V I/O rail (VCC2 = 3.075V threshold) and 5V auxiliary rail (VCC1 = 4.625V) to gate ASIC reset release. Use Value: Matches ASIC vendor's recommended 200–250ms reset hold time, avoiding configuration errors due to insufficient power stabilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6716UTLTD3+ | Same SOT23-6 package, identical 4.625V/3.075V thresholds and 210ms timeout, but open-drain RST output requiring external pullup | Suitable where level-shifting or wired-OR reset buses are needed; incompatible with direct µP reset pin drive without pullup | Select MAX6716UTLTD3+ only if system requires open-drain reset for bus sharing or voltage translation |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only), 200ms timeout, 1.8µA IQ, SOT23-6 - lacks dual-monitoring capability and MR input hysteresis | Applicable only for single-rail systems; cannot replace dual-threshold function without adding second IC | Choose TPS3808G33DBVR only for cost-sensitive, single-supply designs where VCC2 monitoring is unnecessary |
Compared with MAX6715UTSHD3+, MAX6716UTLTD3+ offers identical supervision logic but requires external pullup for RST, while TPS3808G33DBVR reduces quiescent current by 87% yet sacrifices dual-rail monitoring and manual reset - making MAX6715UTSHD3+ optimal for space-constrained dual-supply systems needing integrated push-pull drive.
Availability
MAX6715UTSHD3+ is available at Aetrix Electronics and suitable for telecom power sequencing, server board management, and industrial PLC controller applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX6715UTSHD3+ 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, communications, and computing markets.
The MAX6715–MAX6729 family was designed specifically for ultra-low-voltage, multirail microprocessor supervision - delivering precision dual/three-supply monitoring, flexible reset outputs, and watchdog capability in minimal SOT23 footprints.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6715UTSHD3+?
The MAX6715UTSHD3+ has factory-trimmed reset thresholds of 4.625V for VCC1 and 3.075V for VCC2, with ±1.5% tolerance over the full -40°C to +85°C operating range. These values are fixed by the "SH" suffix in the part number per Maxim's Reset Voltage Threshold Suffix Guide and do not require external resistor programming.
Does the MAX6715UTSHD3+ support manual reset functionality, and how is it implemented?
Yes, the MAX6715UTSHD3+ includes an active-low manual reset (MR) input on Pin 3 with an internal 50kΩ pullup to VCC1. Pulling MR low forces reset assertion, which remains active for the full 210ms timeout period after MR returns high. No external components are required, and the input accepts TTL/CMOS logic levels.
What is the reset output type of the MAX6715UTSHD3+, and how does it interface with a microprocessor?
The MAX6715UTSHD3+ features a push-pull active-low RST output on Pin 1, referenced to VCC1. It drives directly into most µP reset pins without an external pullup resistor, providing VOH ≥ 0.8×VCC1 when deasserted and VOL ≤ 0.4V when asserted at 3.2mA sink - simplifying PCB layout and improving noise immunity.
Can the MAX6715UTSHD3+ operate reliably when one supply rail drops below 1.0V?
Yes, the MAX6715UTSHD3+ guarantees valid reset output logic states down to VCC1 or VCC2 = 0.8V. This ensures deterministic reset behavior during brownout conditions, allowing controlled system shutdown before supply collapse - a key reliability feature confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables.
How does the MAX6715UTSHD3+ handle short-duration voltage transients on VCC lines?
The MAX6715UTSHD3+ is immune to negative-going VCC transients under 20µs in duration when the overdrive exceeds 100mV, as characterized in the Typical Operating Characteristics. This prevents false resets during switching regulator noise or ESD-induced dips, and a 0.1µF bypass capacitor near VCC further enhances transient rejection.
MAX6715UTSHD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.313V, 2.925V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6715UTSHD3+ FAQ
1.How can I place an order for MAX6715UTSHD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6715UTSHD3+ 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 MAX6715UTSHD3+ reliable?
The price and inventory of MAX6715UTSHD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6715UTSHD3+ is usually 5 days.
3.What payment methods are accepted for MAX6715UTSHD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6715UTSHD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6715UTSHD3+?
MAX6715UTSHD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6715UTSHD3+ 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 MAX6715UTSHD3+?
For technical support, including MAX6715UTSHD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6715UTSHD3+ requirements.
6.How does Aetrix verify that MAX6715UTSHD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6715UTSHD3+ 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 MAX6715UTSHD3+ meets industry standards.
7.What is the process for return or replacement of MAX6715UTSHD3+?
All MAX6715UTSHD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6715UTSHD3+, 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 MAX6715UTSHD3+ part is unused and in its original packaging.
Return procedure for MAX6715UTSHD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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