My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6707RKA+T
- Part No.:
- MAX6707RKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6707RKA+T.pdf
- Description:
- IC SUPERVISOR MPU LV SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:14,894
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6707RKA+T from Maxim Integrated is a single-supply microprocessor supervisory IC in 8-pin SOT23 package, providing active-low open-drain reset output, independent watchdog timer with 1.6s timeout, adjustable power-fail comparator (0.62V threshold), manual reset input, and guaranteed reset validity down to VCC = 1V. It monitors +2.55V to +3.6V supply rails in industrial embedded systems requiring reliable brownout detection and orderly shutdown.
For engineers reviewing the MAX6707RKA+T datasheet, MAX6707RKA+T pinout, MAX6707RKA+T application, or MAX6707RKA+T equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in white goods and telecom infrastructure, and two validated alternative parts with documented functional and interface differences.
Technical Context
The MAX6707RKA+T implements a dedicated reset generator with 140ms timeout delay and a separate watchdog circuit that asserts WDO low upon 1.6s WDI inactivity or undervoltage on VCC/PFI/RST_INx inputs. Its power-fail comparator features 0.62V internal reference and 6mV hysteresis for noise-immune early-warning detection.
This A-version device deasserts WDO immediately when VCC or PFI recovers above threshold-unlike non-A variants-and supports MR-driven WDO clearing. The reset output remains valid across -40°C to +125°C with ±60ppm/°C threshold drift and immunity to sub-100ns VCC transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (R-suffix), ±1.5% accuracy over -40°C to +125°C - sets precise brownout detection point for +2.55V–+3.6V supplies |
| Reset Timeout Delay | 140ms minimum - ensures µP initialization completes before release |
| Watchdog Timeout | 1.6s typical - provides sufficient margin for firmware watchdog servicing without false triggers |
| Supply Voltage Range | 1.2V to 5.5V - enables operation during deep brownout and compatibility with 1.8V/2.5V/3.3V/5V systems |
| Power-Fail Input Threshold | 0.62V ±9mV - allows external resistor-divider configuration for secondary rail monitoring down to 0.9V |
| Quiescent Current | 9µA typical at VCC < 3.6V - minimizes impact on battery-backed or low-power standby modes |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive modules and industrial control cabinets |
Pinout & Package
MAX6707RKA+T uses an 8-pin SOT23 package (package code K8+2, outline 21-0078) with 0.65mm pitch, 2.9mm × 1.6mm footprint, and exposed pad option for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Active-low manual reset input | CMOS-compatible input with 50kΩ internal pullup; pulling low forces reset and clears WDO in A-version |
| 2 VCC | Supply voltage and primary reset monitor input | Power source for internal circuitry and reference for VTH = 2.63V reset trigger; valid down to 1.2V |
| 3 GND | Ground reference | Common return path for all analog and digital blocks; requires low-impedance PCB connection |
| 4 PFI | Power-fail voltage monitor input | High-impedance (±200nA leakage) node for external resistive divider; 0.62V comparator threshold |
| 5 PFO | Power-fail output | Open-drain active-low output; asserts when PFI < 0.62V - used for µP interrupt or secondary reset generation |
| 6 N.C. | No connection | Not internally bonded; must be left floating or tied to GND per layout guidelines |
| 7 RESET | Active-low open-drain reset output | Drives µP reset pin; requires external pullup; sinks ≥1.2mA at VCC ≥ 2.55V |
| 8 WDO | Active-low watchdog output | Independent open-drain output asserted on WDI timeout or VCC/PFI undervoltage; cleared by WDI edge or MR low |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable power-fail comparator | 0.62V internal reference with 6mV hysteresis enables configurable early-warning detection on any system rail |
| A-version watchdog behavior | WDO deasserts immediately upon VCC/PFI recovery - eliminates 1.6s delay in non-A versions for faster system resumption |
| Guaranteed reset validity to 1V | RESET remains logic-low (≤0.4V) until VCC drops below 1V - ensures deterministic µP state during full power collapse |
| Immunity to short VCC transients | Rejects falling-edge glitches <100ns - prevents spurious resets in noisy power environments |
| Low quiescent current | 9µA typical at 3.3V - extends battery life in always-on monitoring applications like smart meters |
Applications
| White Goods Control | Industrial Telecom Gateway |
|---|---|
Use Scenario: Monitoring main 3.3V supply and auxiliary 2.5V I/O rail in washing machine MCU board during spin cycle voltage dips. IC Role / Device Role / Timing Role: Supervisory IC asserting RESET and PFO simultaneously to halt motor drive and save EEPROM state before brownout. Use Value: Prevents corrupted flash writes and unsafe motor coast-down using 140ms reset hold time and 0.62V PFI threshold tuned to 2.4V rail collapse. |
Use Scenario: Power supervision of dual-rail FPGA-based packet processor in 5G small cell baseband unit. IC Role / Device Role / Timing Role: Generating synchronized reset pulse and NMI-triggering PFO signal when 12V-to-3.3V DC-DC converter output sags below 3.1V. Use Value: Enables graceful packet buffer flush and clock domain isolation via PFO interrupt, while RESET holds FPGA in known state for 140ms recovery window. |
| Intelligent Instrumentation | Critical µP Power Monitoring |
Use Scenario: Ensuring reliable boot sequence in handheld multimeter with Li-ion battery supply ranging from 4.2V (full) to 2.8V (low). IC Role / Device Role / Timing Role: Reset generator with R-suffix 2.63V threshold and MR-driven manual reset for factory calibration mode entry. Use Value: Guarantees µP reset assertion below 2.63V while maintaining RESET validity down to 1.2V - covers full battery discharge curve without external components. |
Use Scenario: Monitoring backup 3.3V supply in medical infusion pump controller during AC mains failure. IC Role / Device Role / Timing Role: Dual-role supervisor: RESET halts motor driver, while PFO triggers battery switchover and alerts host MCU via interrupt. Use Value: Combines 140ms reset hold time with 0.62V PFI reference to detect 3.0V rail collapse 300ms before critical undervoltage - enabling safe fluid stoppage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6707RKA-T | Same functionality but leaded packaging; no RoHS compliance | Requires Pb-containing solder process; unsuitable for EU/China export | Select only for legacy manufacturing lines without lead-free capability |
| MAX6705RKA+T | Identical pinout and specs except push-pull (not open-drain) RESET output | Eliminates need for external pullup resistor; incompatible with wired-OR reset buses | Choose when driving single µP reset pin directly without bus sharing |
Compared with MAX6707RKA+T, MAX6707RKA-T lacks RoHS compliance and requires leaded assembly, while MAX6705RKA+T replaces open-drain RESET with push-pull - simplifying BOM but removing reset bus flexibility. All three share identical watchdog, PFI/PFO, and MR behavior.
Availability
MAX6707RKA+T is available at Aetrix Electronics and suitable for white goods control, industrial telecom gateways, intelligent instrumentation, and critical µP power monitoring requiring stable component supply across extended temperature ranges.
Supply support for MAX6707RKA+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 multi-function supervision - combining reset, watchdog, and power-fail detection in one 8-pin SOT23 device for cost-sensitive, high-reliability applications.
FAQ
What is the reset threshold voltage for MAX6707RKA+T?
The MAX6707RKA+T has a nominal reset threshold of 2.63V (R-suffix), specified from 2.53V to 2.72V over -40°C to +125°C. This value is factory-trimmed and guaranteed across temperature, enabling precise brownout detection for +2.55V–+3.6V supply rails without external adjustment.
Does MAX6707RKA+T support manual reset triggering of the watchdog output?
Yes, MAX6707RKA+T supports MR-driven WDO clearing: pulling MR low deasserts WDO immediately in the A-version. This allows external logic or pushbutton switches to reset the watchdog state independently of VCC or PFI conditions - a key distinction from non-A variants where WDO only clears on WDI transition.
What is the function of the N.C. pin on MAX6707RKA+T?
Pin 6 of MAX6707RKA+T is designated N.C. (No Connection) - it is not internally bonded and serves no electrical function. Per Maxim's layout guidance, this pin must be left floating or connected to GND; routing traces or placing vias on it may cause mechanical stress or contamination risks in the SOT23 package.
How does the power-fail comparator in MAX6707RKA+T differ from the main reset monitor?
The MAX6707RKA+T power-fail comparator uses a fixed 0.62V internal reference on PFI, while the main reset monitor uses the R-suffix 2.63V threshold on VCC. PFI enables monitoring of secondary rails (e.g., 1.8V, 2.5V) via external resistor dividers, and its output (PFO) is independent of RESET - allowing simultaneous early-warning interrupt and system reset.
Is MAX6707RKA+T compatible with 1.8V supply systems?
Yes, MAX6707RKA+T operates with VCC as low as 1.2V and guarantees RESET validity down to 1.0V, making it suitable for 1.8V systems. However, its 2.63V reset threshold means it cannot supervise the 1.8V rail directly - instead, use PFI with a resistor divider to scale 1.8V down to 0.62V for power-fail detection.
MAX6707RKA+T 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:
- 2
- Voltage - Threshold:
- 2.63V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6707RKA+T FAQ
1.How can I place an order for MAX6707RKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6707RKA+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 MAX6707RKA+T reliable?
The price and inventory of MAX6707RKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6707RKA+T is usually 5 days.
3.What payment methods are accepted for MAX6707RKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6707RKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6707RKA+T?
MAX6707RKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6707RKA+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 MAX6707RKA+T?
For technical support, including MAX6707RKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6707RKA+T requirements.
6.How does Aetrix verify that MAX6707RKA+T is sourced from the original manufacturer or authorized distributors?
All MAX6707RKA+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 MAX6707RKA+T meets industry standards.
7.What is the process for return or replacement of MAX6707RKA+T?
All MAX6707RKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6707RKA+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 MAX6707RKA+T part is unused and in its original packaging.
Return procedure for MAX6707RKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6707RKA+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…
