My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6701ZKA+T
- Part No.:
- MAX6701ZKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6701ZKA+T.pdf
- Description:
- IC SUPERVISOR MPU LV SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,417
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6701ZKA+T from Maxim Integrated is a low-voltage 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 +2.25V to +2.38V supply voltage (Z-suffix threshold), guarantees reset validity down to VCC = 1V, and is used in white goods, networking equipment, and critical µP power monitoring systems.
For engineers reviewing the MAX6701ZKA+T datasheet, MAX6701ZKA+T pinout, MAX6701ZKA+T application, or MAX6701ZKA+T equivalent, this page delivers verified specifications, validated pin functions, confirmed operating conditions across –40°C to +125°C, and real-world substitution guidance for industrial embedded designs requiring reliable power-on reset and brownout protection.
Technical Context
The MAX6701ZKA+T implements a precision undervoltage detection architecture with a fixed 2.32V (typ) reset threshold (Z-suffix) and guaranteed operation from VCC = 1.0V. Its internal reset generator enforces a 140ms minimum timeout after VCC rise or MR release, while the independent watchdog timer asserts WDO if WDI remains static beyond 1.6s.
It integrates a high-impedance 0.62V reference-based power-fail comparator (PFI/PFO), enabling early warning of supply collapse via external resistor dividers. The device supports manual reset triggering with 200ns MR-to-reset delay and 100ns glitch rejection, and features push-pull RESET output with VOL ≤ 0.4V at ISINK = 3.2mA (VCC ≥ 4.25V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (typ), 2.24V–2.40V (–40°C to +125°C); ensures reliable reset assertion before system logic fails on +2.5V rail collapse |
| Reset Timeout Period | 140–300ms; holds µP in reset long enough for stable clock and supply settling after power-up or brownout recovery |
| Watchdog Timeout | 1.12–2.52s (–40°C to +125°C); provides robust firmware activity monitoring without false triggers from transient noise |
| Supply Current | 9–20µA (VCC < 3.6V); enables always-on supervision in battery-backed or low-power systems |
| PFI Threshold | 602–642mV (–40°C to +125°C); allows precise power-fail warning setup for secondary rails using external resistive dividers |
| Operating Voltage Range | 1.0–5.5V; supports supervision of core voltages as low as 1.2V while maintaining full functionality |
| Temperature Range | –40°C to +125°C; qualified for under-hood automotive modules, industrial controllers, and telecom infrastructure |
Pinout & Package
MAX6701ZKA+T is housed in an 8-pin SOT23 package (package code K8+2), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant lead-free finish (+T suffix). Pin 1 is marked by a dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Active-low manual reset input | CMOS-compatible input with 50kΩ internal pullup; pulling low forces reset for ≥1µs, with 200ns propagation delay and 100ns glitch rejection |
| 2 VCC | Main supply input | Power source for internal comparators and push-pull outputs; operates from 1.0V to 5.5V; reset guaranteed valid down to 1.0V |
| 3 GND | Ground reference | Common return path for all internal circuits and output drivers; must be low-impedance for accurate threshold sensing |
| 4 PFI | Power-fail monitor input | High-impedance (±200nA leakage) node referenced to 0.62V internal bandgap; connects to external divider for custom trip points |
| 5 PFO | Power-fail output | Active-low open-drain output; sinks 200µA at VOL ≤ 0.3V (VCC ≥ 1.8V); used to interrupt µP before main supply collapse |
| 6 WDI | Watchdog input | Edge-sensitive input; toggling within 1.6s prevents WDO assertion; accepts pulses as short as 50ns |
| 7 RESET | Active-low reset output | Push-pull driver capable of sinking 3.2mA at VCC ≥ 4.25V with VOL ≤ 0.4V; asserts during power-up, brownout, or MR activation |
| 8 WDO | Active-low watchdog output | Push-pull output asserted when watchdog times out or VCC/RST_IN drops below threshold; deasserts on valid WDI edge or MR low |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.32V reset threshold (Z-suffix) | Optimized for +2.5V system rails with ±1.5% accuracy over temperature, eliminating external resistor networks |
| 140ms reset timeout | Guarantees µP remains held in reset until clocks and peripherals stabilize post-power-up or brownout recovery |
| Independent 0.62V power-fail comparator | Enables early-warning detection of secondary supply collapse (e.g., I/O or analog rails) with <1µs response time |
| 1.6s watchdog timer with WDO output | Provides fail-safe firmware supervision without affecting RESET timing; WDO can drive NMI or fault logging circuits |
| Manual reset with 50kΩ internal pullup | Reduces BOM count by eliminating external pullup resistor; supports pushbutton or logic-level reset initiation |
| VCC = 1V reset validity | Ensures deterministic reset behavior during deep brownout or battery-depleted conditions where VCC falls below 1.2V |
Applications
| White Goods Control | Industrial Networking Equipment |
|---|---|
|
Use Scenario: Microcontroller in washing machine main control board requires reliable reset during AC line sags and motor startup surges. IC Role / Device Role / Timing Role: Supervises +2.5V logic rail and generates clean, debounced reset pulse synchronized to VCC recovery. Use Value: Prevents erratic MCU behavior during 100ms–500ms brownouts common in appliance power supplies, reducing field failures. |
Use Scenario: Ethernet switch ASIC needs coordinated reset sequencing and power-fail warning before backup battery depletion. IC Role / Device Role / Timing Role: Monitors primary +3.3V supply and secondary +1.8V I/O rail via PFI divider; asserts PFO to trigger graceful shutdown. Use Value: Enables 20ms advance warning before backup power loss, allowing packet flush and state save before hard reset. |
| Telecom Base Station Controller | Critical µP Power Monitoring |
|
Use Scenario: Remote radio unit controller must survive wide-temperature outdoor operation and recover autonomously after lightning-induced transients. IC Role / Device Role / Timing Role: Provides –40°C to +125°C qualified reset supervision with immunity to 10µs falling-VCC transients. Use Value: Eliminates need for external transient suppressors and RC timing networks, shrinking PCB area by 35%. |
Use Scenario: Medical diagnostic instrument requires fail-safe boot integrity verification after cold start or unexpected power interruption. IC Role / Device Role / Timing Role: Combines VCC supervision, manual reset, and watchdog to enforce triple-layer reset assurance. Use Value: Meets IEC 62304 Class C software safety requirements by guaranteeing reset assertion even during 1.2V VCC brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6701ZKA-T | Same electrical specs and pinout, but leaded (Pb-containing) packaging instead of lead-free (+T) | Not suitable for RoHS-compliant production; identical performance in non-regulated environments | Select MAX6701ZKA-T only for legacy rework or prototyping where Pb-free compliance is not required |
| MAX6705ZKA+T | Includes adjustable PFI/PFO comparator and dual reset inputs; same Z-threshold and SOT23-8 package | Supports triple-voltage monitoring (VCC + two external rails); adds complexity for single-rail use cases | Choose MAX6705ZKA+T when monitoring auxiliary supplies like +1.8V or +1.2V is required alongside main +2.5V rail |
Compared with MAX6701ZKA+T, MAX6701ZKA-T offers identical supervision functionality but lacks RoHS compliance, while MAX6705ZKA+T extends capability to multi-rail systems at the cost of added external components and design validation effort.
Availability
MAX6701ZKA+T is available at Aetrix Electronics and suitable for white goods control, industrial networking equipment, and telecom base station controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6701ZKA+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 industrial, automotive, and communications markets, with emphasis on reliability and integration.
The MAX6701–MAX6708 family targets space-constrained µP systems needing robust, low-quiescent-power supervision of single or multiple supply rails with integrated watchdog and power-fail warning.
FAQ
What is the exact reset threshold voltage of the MAX6701ZKA+T?
The MAX6701ZKA+T has a nominal reset threshold of 2.32V, with guaranteed limits of 2.24V (min) to 2.40V (max) over the full –40°C to +125°C operating temperature range. This Z-suffix variant is specifically calibrated for +2.5V system rails and eliminates the need for external resistor dividers to set the trip point.
Does the MAX6701ZKA+T support watchdog functionality?
Yes, the MAX6701ZKA+T includes a fully functional watchdog timer with a typical timeout period of 1.6s. It monitors the WDI pin and asserts the WDO output low if no edge is detected within that window. WDO deasserts upon a valid WDI transition or when MR is pulled low, providing flexible fault signaling independent of the main RESET output.
Can the MAX6701ZKA+T monitor supply voltages other than VCC?
Yes, the MAX6701ZKA+T supports external voltage monitoring via its PFI pin, which connects to an internal 0.62V reference comparator. By applying a resistor divider from a secondary supply (e.g., +1.8V or +1.2V) to PFI, designers can configure early power-fail warning for auxiliary rails, with PFO asserting to signal the µP before main supply collapse.
What is the operating temperature range of the MAX6701ZKA+T?
The MAX6701ZKA+T is rated for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated per the datasheet's electrical characteristics tables and makes the device suitable for under-hood automotive modules, industrial PLCs, and telecom infrastructure deployed in uncontrolled environments.
Is the MAX6701ZKA+T pin-compatible with other members of the MAX6701–MAX6708 family?
Yes, all MAX6701–MAX6708 variants share identical 8-pin SOT23 pinout and footprint (K8+2), including MAX6701ZKA+T. However, functional differences exist - for example, MAX6704 and MAX6708 lack WDO, while MAX6703 and MAX6707 feature open-drain RESET. Always verify reset output type, watchdog presence, and threshold suffix before substitution.
MAX6701ZKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- 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:
- -
MAX6701ZKA+T FAQ
1.How can I place an order for MAX6701ZKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6701ZKA+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 MAX6701ZKA+T reliable?
The price and inventory of MAX6701ZKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6701ZKA+T is usually 5 days.
3.What payment methods are accepted for MAX6701ZKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6701ZKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6701ZKA+T?
MAX6701ZKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6701ZKA+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 MAX6701ZKA+T?
For technical support, including MAX6701ZKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6701ZKA+T requirements.
6.How does Aetrix verify that MAX6701ZKA+T is sourced from the original manufacturer or authorized distributors?
All MAX6701ZKA+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 MAX6701ZKA+T meets industry standards.
7.What is the process for return or replacement of MAX6701ZKA+T?
All MAX6701ZKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6701ZKA+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 MAX6701ZKA+T part is unused and in its original packaging.
Return procedure for MAX6701ZKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6701ZKA+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…
