My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6701AZKA+T
- Part No.:
- MAX6701AZKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6701AZKA+T.pdf
- Description:
- IC SUPERVISOR MPU LV SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,312
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6701AZKA+T from Maxim Integrated is a precision microprocessor supervisory circuit in an 8-pin SOT23 package, providing active-low push-pull reset output, 1.6s watchdog timeout, 0.62V power-fail comparator input, and manual reset input. It monitors +5.0V/+3.3V/+3.0V/+2.5V supply rails and guarantees valid reset down to VCC = 1V, used in critical µP power monitoring for white goods and telecom infrastructure.
For engineers reviewing the MAX6701AZKA+T datasheet, MAX6701AZKA+T pinout, MAX6701AZKA+T application, or MAX6701AZKA+T equivalent, this page delivers verified functional identity, exact pin roles, confirmed reset threshold (2.32V), watchdog behavior, and real-world substitution guidance - all extracted from Maxim's official MAX6701–MAX6708 family documentation.
Technical Context
The MAX6701AZKA+T implements a dual-threshold supervision architecture: primary VCC reset detection with factory-trimmed 2.32V threshold (Z-suffix), plus independent 0.62V reference for external power-fail monitoring via PFI/PFO. Its watchdog timer asserts WDO low after 1.6s of no WDI edge transition, and resets are held for 140ms minimum after fault clearance.
Unlike A-versions, the standard MAX6701 (non-A) latches WDO low on any undervoltage event or watchdog timeout and requires a WDI edge to deassert - not MR toggle. The device uses BiCMOS process, supports operation from -40°C to +125°C, and maintains guaranteed reset validity even as VCC falls to 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.32V (typ), ±3% over -40°C to +125°C - sets precise brownout detection point for +2.5V systems |
| Reset Timeout Period | 140ms (min), 280ms (max) - ensures µP remains held in reset long enough for stable power recovery |
| Watchdog Timeout | 1.6s (typ), 0.96–2.52s over temperature - provides reliable software activity monitoring without false triggers |
| Power-Fail Input Threshold | 0.62V (typ), 6mV hysteresis - enables accurate early-warning detection of secondary supply collapse |
| Supply Current | 9–20µA at VCC < 3.6V - ultra-low quiescent draw suitable for battery-backed or energy-sensitive systems |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout conditions |
| Output Type | Active-low push-pull RESET and WDO - eliminates need for external pull-up resistors in most applications |
Pinout & Package
Package: 8-pin SOT23 (K8+2 outline), RoHS-compliant lead-free, -40°C to +125°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Active-low manual reset input | CMOS-compatible input with internal 50kΩ pullup; pulling low forces immediate reset and clears watchdog |
| 2 VCC | Main supply voltage input | Powers internal circuitry and defines primary reset threshold; valid from 1.0V to 5.5V |
| 3 GND | Ground reference | Common return path for all analog and digital functions; must be low-impedance |
| 4 PFI | Power-fail monitor input | High-impedance node tied to 0.62V internal reference; accepts external resistor divider for custom trip points |
| 5 PFO | Power-fail output | Active-low open-drain output; signals PFI voltage drop below 0.62V, usable for µP interrupt or orderly shutdown |
| 6 WDI | Watchdog input | Edge-sensitive input; rising or falling edge resets 1.6s timer; 50ns minimum pulse width detectable |
| 7 RESET | Active-low reset output | Push-pull driver; asserted low during power-up, brownout, or MR activation; holds for ≥140ms after fault clears |
| 8 WDO | Active-low watchdog output | Push-pull driver; latched low on watchdog timeout or VCC/RST_IN undervoltage; deasserts only on valid WDI edge |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed reset validity to VCC = 1V | Ensures deterministic system reset behavior even during severe brownout, preventing undefined µP states |
| Immunity to short falling VCC transients | Rejects sub-10µs supply dips, eliminating spurious resets in noisy power environments |
| Independent power-fail comparator with PFI/PFO pins | Enables monitoring of secondary supplies (e.g., I/O or core rails) without additional ICs or external references |
| 140ms minimum reset timeout | Meets JEDEC JESD8-12B requirements for µP reset hold time, ensuring reliable boot initialization |
| BiCMOS process technology | Delivers low leakage (<200nA at +125°C) and high noise immunity while maintaining micropower operation |
Applications
| Computers | Networking |
|---|---|
|
Use Scenario: Desktop motherboard power sequencing with multi-rail regulation (+12V, +5V, +3.3V, +1.8V). IC Role / Device Role / Timing Role: Primary supervisor for main CPU VCC rail and backup supervisor for auxiliary I/O supply via PFI divider. Use Value: Prevents boot failure due to delayed +3.3V rail stabilization by holding RESET until all monitored voltages exceed 2.32V and remain stable for 140ms. |
Use Scenario: Enterprise switch line card with hot-swap power modules and redundant DC-DC converters. IC Role / Device Role / Timing Role: Monitors primary 3.3V management rail and secondary 1.2V core supply using RST_IN1 (via external divider) and VCC inputs. Use Value: Triggers immediate hardware reset on 3.3V brownout while generating PFO interrupt to initiate graceful packet drain before full power loss. |
| Telecommunications | White Goods |
|
Use Scenario: Base station remote radio unit (RRU) with strict uptime requirements and distributed power domains. IC Role / Device Role / Timing Role: Supervises FPGA configuration voltage and RF amplifier bias supply; WDO connected to FPGA NMI for watchdog-triggered firmware recovery. Use Value: Detects FPGA lockup via missing WDI toggles and forces controlled reconfiguration without requiring host processor intervention. |
Use Scenario: Smart refrigerator control board with microcontroller, display, and motor drivers sharing isolated power domains. IC Role / Device Role / Timing Role: Resets main MCU on main 5V rail collapse and uses PFI to monitor 3.3V display supply for early warning shutdown. Use Value: Avoids corrupted EEPROM writes during AC dropout by asserting PFO interrupt 100ms before VCC drops below 2.32V, enabling safe data save. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6701AKA+T | A-version with non-latching WDO: deasserts immediately when VCC recovers above threshold, unlike latched behavior of MAX6701AZKA+T | Suitable where fast watchdog recovery is required after transient undervoltage, but incompatible if system relies on WDO latch for fault logging | Select MAX6701AKA+T only if WDO must reflect instantaneous VCC status rather than persistent fault indication |
| TPS3808G33DBVR | TI part with 3.3V fixed threshold, 200ms reset timeout, no PFI/PFO, no watchdog input/output | Lacks power-fail warning and watchdog functionality; limited to single-rail +3.3V monitoring without flexibility | Choose only for cost-sensitive, single-supply designs where PFI and WDI features are unnecessary |
Compared with MAX6701AZKA+T, MAX6701AKA+T offers faster WDO recovery but loses fault persistence, while TPS3808G33DBVR reduces feature set to basic reset-only supervision - making MAX6701AZKA+T the optimal choice for systems needing integrated power-fail warning and latched watchdog signaling.
Availability
MAX6701AZKA+T is available at Aetrix Electronics and suitable for critical µP power monitoring, intelligent instruments, and telecommunications infrastructure requiring stable component supply across extended temperature ranges.
Supply support for MAX6701AZKA+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, automotive, and communications applications.
The MAX6701–MAX6708 family targets space-constrained µP systems needing multi-voltage supervision, power-fail warning, and watchdog safety - delivering high accuracy, low power, and guaranteed operation from -40°C to +125°C.
FAQ
What is the exact reset threshold voltage for MAX6701AZKA+T?
The MAX6701AZKA+T has a factory-trimmed VCC reset threshold of 2.32V (typical), with ±3% tolerance over -40°C to +125°C. This corresponds to the 'Z' suffix in the part number and is optimized for reliable supervision of +2.5V supply rails in industrial and telecom equipment.
Does MAX6701AZKA+T include a watchdog timer and independent watchdog output?
Yes, MAX6701AZKA+T includes a 1.6s watchdog timer and an independent active-low push-pull WDO output. Unlike MAX6704/MAX6708, it provides dedicated watchdog signaling separate from the RESET output, allowing simultaneous reset and fault logging in safety-critical systems.
Can MAX6701AZKA+T monitor multiple supply voltages?
No - MAX6701AZKA+T monitors only the primary VCC supply. The triple-voltage monitoring capability (VCC + RST_IN1 + RST_IN2) is exclusive to MAX6701(A)/MAX6702(A)/MAX6703(A) variants. MAX6701AZKA+T supports external power-fail monitoring via PFI but lacks adjustable RST_IN inputs.
What is the function of the PFI and PFO pins on MAX6701AZKA+T?
PFI is a high-impedance input referenced to an internal 0.62V threshold; connecting it to a resistor divider enables monitoring of secondary supplies (e.g., +1.8V, +1.2V). PFO is its corresponding active-low open-drain output, used to generate interrupts or trigger orderly shutdown before main VCC collapse.
Is MAX6701AZKA+T compatible with lead-free PCB assembly processes?
Yes, MAX6701AZKA+T is supplied in RoHS-compliant lead-free packaging (indicated by '+T' suffix), qualified for standard reflow profiles including JEDEC J-STD-020 moisture sensitivity level 1, and rated for peak temperatures up to +300°C for 10 seconds during soldering.
MAX6701AZKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6701AZKA+T FAQ
1.How can I place an order for MAX6701AZKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6701AZKA+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 MAX6701AZKA+T reliable?
The price and inventory of MAX6701AZKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6701AZKA+T is usually 5 days.
3.What payment methods are accepted for MAX6701AZKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6701AZKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6701AZKA+T?
MAX6701AZKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6701AZKA+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 MAX6701AZKA+T?
For technical support, including MAX6701AZKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6701AZKA+T requirements.
6.How does Aetrix verify that MAX6701AZKA+T is sourced from the original manufacturer or authorized distributors?
All MAX6701AZKA+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 MAX6701AZKA+T meets industry standards.
7.What is the process for return or replacement of MAX6701AZKA+T?
All MAX6701AZKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6701AZKA+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 MAX6701AZKA+T part is unused and in its original packaging.
Return procedure for MAX6701AZKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6701AZKA+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…
