My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6725AKASDD6+
- Part No.:
- MAX6725AKASDD6+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6725AKASDD6+.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,053
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6725AKASDD6+ from Maxim Integrated is a dual-voltage microprocessor supervisory IC in an 8-pin SOT23 package, monitoring VCC1 (primary supply) and VCC2 (secondary supply) with factory-trimmed reset thresholds of 4.625V and 3.075V respectively, 560ms minimum reset timeout, push-pull active-low RST output, and manual-reset input - used to ensure reliable boot and brownout recovery in multivoltage embedded systems.
For engineers reviewing the MAX6725AKASDD6+ datasheet, MAX6725AKASDD6+ pinout, MAX6725AKASDD6+ application, or MAX6725AKASDD6+ equivalent, key selection criteria include guaranteed reset validity down to VCC1/VCC2 = 0.8V, ultra-low 14µA typical supply current at 3.6V, immunity to short VCC transients, dual-supply monitoring capability, and AEC-Q100-qualified variants for automotive-grade reliability.
Technical Context
The MAX6725AKASDD6+ integrates two independent voltage comparators with hysteresis (0.5% typical), a programmable reset timeout timer (560ms min), and a manual-reset input with internal 50kΩ pullup to VCC1. It asserts reset when either VCC1 falls below 4.625V or VCC2 drops below 3.075V, maintaining reset for the full timeout after both supplies recover.
Its push-pull RST output is referenced to VCC1 and guarantees VOL ≤ 0.3V at ISINK = 1.2mA (VCC1 ≥ 2.7V), while supply current remains stable across -40°C to +125°C with <20ppm/°C reset threshold tempco - enabling robust operation in industrial and automotive environments without external supervision logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±125mV tolerance) - ensures deterministic reset assertion during primary supply brownout |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±75mV tolerance) - enables precise secondary supply monitoring for I/O or core rails |
| Reset Timeout Period | 560ms minimum - provides sufficient hold time for slow-starting processors and power sequencing |
| Supply Current | 14µA typical at 3.6V - minimizes quiescent load in battery-backed or low-power always-on systems |
| Operating Temperature | -40°C to +125°C - supports deployment in under-hood automotive, industrial control, and telecom infrastructure |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup resistor and ensures fast, rail-to-rail drive strength |
| Reset Validity Voltage | Guaranteed down to VCC1 or VCC2 = 0.8V - maintains functional reset assertion during deep brownout conditions |
Pinout & Package
MAX6725AKASDD6+ uses an 8-pin SOT23 package (SOT23-8), measuring 4.9mm × 6.0mm × 1.45mm, with gull-wing leads and RoHS-compliant matte-tin plating. Pin 1 is marked by a dot; pin numbering follows standard SOT23-8 convention (counterclockwise from mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; drives low during fault and holds for full timeout period |
| 2 | GND | System ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Active-low manual-reset input with internal 50kΩ pullup to VCC1; forces reset when pulled low |
| 4 | VCC2 | Secondary supply input powering comparator for VCC2 threshold detection and RST2 output reference |
| 5 | VCC1 | Primary supply input powering device core, VCC1 comparator, and RST output driver |
| 6 | RSTIN | Adjustable undervoltage monitor input (626mV internal reference); enables third-voltage monitoring via resistor divider |
| 7 | PFI | Power-fail input (626mV reference); triggers PFO assertion when external supply falls below set threshold |
| 8 | PFO | Active-low power-fail output (push-pull); deasserts immediately on recovery - no timeout delay |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply monitoring | Simultaneous VCC1 (1.8–5.0V) and VCC2 (0.9–3.3V) supervision with separate thresholds and hysteresis |
| Factory-trimmed precision thresholds | VTH1 = 4.625V ±125mV and VTH2 = 3.075V ±75mV - eliminates calibration overhead in production |
| Manual-reset with glitch immunity | MR input rejects <100ns noise pulses and requires only 1µs minimum low pulse to trigger reset |
| Low-power operation | 14µA typical ICC at 3.6V - extends battery life in portable equipment and reduces thermal load in dense PCB layouts |
| Robust reset timing | 560ms minimum timeout with <20ppm/°C tempco - ensures consistent reset duration across full temperature range |
Applications
| Industrial PLC Controller | Automotive ADAS Camera Module |
|---|---|
Use Scenario: Monitors 5V system rail and 3.3V I/O rail in programmable logic controller with real-time Ethernet interface. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops during ESD event or power interruption. Use Value: Prevents firmware corruption during brownout by guaranteeing reset assertion down to VCC = 0.8V and holding for 560ms to allow safe state save. |
Use Scenario: Ensures clean boot and fault recovery in 12V-powered camera module with 3.3V image sensor and 1.8V ISP core. IC Role / Device Role / Timing Role: Supervises primary (3.3V) and secondary (1.8V) rails while providing MR input for diagnostic reset via CAN command. Use Value: Enables AEC-Q100-aligned reliability with -40°C to +125°C operation and immunity to engine-bay voltage transients. |
| Telecom Base Station FPGA Board | Medical Infusion Pump Controller |
Use Scenario: Validates 1.2V FPGA core and 2.5V transceiver rails before configuration loading in LTE remote radio unit. IC Role / Device Role / Timing Role: Dual-threshold supervisor with push-pull RST driving FPGA PROG_B pin directly. Use Value: Eliminates external pullup resistor and reduces BOM count; 14µA supply current minimizes standby power draw. |
Use Scenario: Monitors battery-backed 3.3V MCU rail and 5V motor driver rail in safety-critical infusion pump with watchdog-enabled firmware. IC Role / Device Role / Timing Role: Provides deterministic reset timing and MR input for clinician-initiated recalibration sequence. Use Value: Guarantees fail-safe behavior during low-battery brownout with reset valid to 0.8V and no false triggering from EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6726AKASDD6+ | Identical pinout, package, and electrical specs; differs only in reset timeout suffix (D6 = 560ms for both) | No functional difference - same dual-supply monitoring, thresholds, and features | Select MAX6726AKASDD6+ only if cross-referenced in legacy BOMs; MAX6725AKASDD6+ is functionally identical and preferred for new designs |
| TPS3808G33DBVR | Single-supply supervisor (monitors only VCC); 3.3V fixed threshold; 200ms timeout; SOT23-6 package | Lacks VCC2 monitoring, MR input, and adjustable RSTIN/PFI - unsuitable for true dual-rail systems | Use only when supervising one rail in space-constrained designs; not a drop-in replacement for MAX6725AKASDD6+ |
Compared with MAX6726AKASDD6+, the MAX6725AKASDD6+ offers identical functionality and qualification; versus TPS3808G33DBVR, it delivers essential dual-supply monitoring, manual reset, and extended timeout - critical for systems requiring coordinated rail sequencing and field-serviceability.
Availability
MAX6725AKASDD6+ is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive ADAS modules, telecom FPGA boards, and medical infusion pumps requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6725AKASDD6+ 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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, dual/triple-supply supervisory circuits optimized for multirail embedded systems where reliability, small footprint, and guaranteed reset behavior under brownout are critical design requirements.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6725AKASDD6+?
The MAX6725AKASDD6+ has factory-trimmed reset thresholds of 4.625V ±125mV for VCC1 and 3.075V ±75mV for VCC2, as indicated by the 'AS' suffix in the part number per Maxim's Reset Voltage Threshold Suffix Guide. These values are guaranteed over the full -40°C to +125°C operating range with 20ppm/°C tempco.
Does the MAX6725AKASDD6+ support manual reset, and how is it implemented?
Yes, the MAX6725AKASDD6+ includes an active-low manual-reset (MR) input on Pin 3 with an internal 50kΩ pullup to VCC1. Pulling MR low for ≥1µs forces reset assertion for the full 560ms timeout period. The input rejects <100ns glitches and can be driven by CMOS logic or a momentary switch to GND without external debounce circuitry.
Can the MAX6725AKASDD6+ monitor a third voltage rail, and if so, how?
Yes, the MAX6725AKASDD6+ supports third-rail monitoring via the RSTIN pin (Pin 6), which compares the applied voltage against an internal 626mV reference. A resistor divider network sets the external threshold: VEXT_TH = 626mV × ((R1 + R2)/R2). This enables precise undervoltage detection for auxiliary supplies down to 0.62V.
What is the reset output type and drive capability of the MAX6725AKASDD6+?
The MAX6725AKASDD6+ features a push-pull active-low RST output (Pin 1) referenced to VCC1. It guarantees VOL ≤ 0.3V at ISINK = 1.2mA (VCC1 ≥ 2.7V) and VOH ≥ 0.8 × VCC1 at ISOURCE = 500µA - eliminating the need for an external pullup resistor and enabling direct connection to µP reset inputs.
Is the MAX6725AKASDD6+ qualified for automotive applications?
The MAX6725AKASDD6+ itself is not AEC-Q100 qualified; however, the closely related MAX6719AUTTWD1/V+T and MAX6729AKA_ _D_+T variants in the same family are AEC-Q100 Grade 1 qualified. For automotive use, engineers should select those qualified variants - MAX6725AKASDD6+ is intended for industrial and telecom applications requiring the same performance envelope.
MAX6725AKASDD6+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 0.788V, 2.925V, Adj
- Output:
- Open Drain, Open Drain
- Reset:
- Active High/Active Low
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6725AKASDD6+ FAQ
1.How can I place an order for MAX6725AKASDD6+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6725AKASDD6+ 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 MAX6725AKASDD6+ reliable?
The price and inventory of MAX6725AKASDD6+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6725AKASDD6+ is usually 5 days.
3.What payment methods are accepted for MAX6725AKASDD6+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6725AKASDD6+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6725AKASDD6+?
MAX6725AKASDD6+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6725AKASDD6+ 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 MAX6725AKASDD6+?
For technical support, including MAX6725AKASDD6+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6725AKASDD6+ requirements.
6.How does Aetrix verify that MAX6725AKASDD6+ is sourced from the original manufacturer or authorized distributors?
All MAX6725AKASDD6+ 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 MAX6725AKASDD6+ meets industry standards.
7.What is the process for return or replacement of MAX6725AKASDD6+?
All MAX6725AKASDD6+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6725AKASDD6+, 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 MAX6725AKASDD6+ part is unused and in its original packaging.
Return procedure for MAX6725AKASDD6+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6725AKASDD6+ 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…
