My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6301EPA
- Part No.:
- MAX6301EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX6301EPA.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,654
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6301EPA from Maxim Integrated is an industrial-grade, low-power microprocessor supervisory circuit with active-low open-drain reset output, adjustable reset threshold (≥1.22V), adjustable reset timeout (via external capacitor on SRT), and adjustable watchdog timeout (via SWT + WDS pin-selectable 500× extension). It operates from +2V to +5.5V and delivers 4µA supply current at +25°C, serving critical power-monitoring roles in battery-powered medical instruments and embedded controllers.
For engineers reviewing the MAX6301EPA datasheet, MAX6301EPA pinout, MAX6301EPA application, or MAX6301EPA equivalent, this page provides verified functional identity, validated 8-pin PDIP package mapping, confirmed reset/watchdog timing behavior, temperature-rated electrical specs (–40°C to +85°C), and two field-validated alternative parts with documented interface and timing differences.
Technical Context
The MAX6301EPA implements a precision bandgap-based reset comparator referenced to 1.22V, with external resistor divider programmability for thresholds above 1.22V. Its reset assertion is guaranteed down to VCC = 1V, and it features immunity to negative-going VCC transients ≤50µs at 100mV overdrive.
It integrates a dual-mode watchdog timer: normal mode (WDS = GND) yields µs-range timeouts via CSWT; extended mode (WDS = VCC) multiplies timeout by 500×, enabling minute-scale supervision. The watchdog clears on WDI edge, WDS transition, or reset assertion - and restarts upon reset deassertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | +2V to +5.5V - supports standard 3.3V/5V systems and brownout detection down to 2V |
| Supply Current | 4.0µA typical at +25°C - enables multi-year operation in coin-cell–powered portable equipment |
| Reset Threshold Accuracy | 1.220V ±25mV at +25°C - sets precise voltage trip point using external R1/R2 divider |
| Reset Timeout Period | 2.8ms to 5.2ms (CSRT = 1500pF) - configurable via capacitor on SRT pin for µP initialization timing |
| Watchdog Timeout (Normal) | 2.8ms to 5.2ms (CSWT = 1500pF, WDS = GND) - software supervision interval aligned with firmware execution cycles |
| Watchdog Timeout (Extended) | 1.4s to 2.6s (CSWT = 1500pF, WDS = VCC) - 500× multiplication enables long sleep/wake-up intervals without CPU wake-ups |
| Temperature Range | –40°C to +85°C - qualified for industrial and automotive-adjacent embedded environments |
Pinout & Package
MAX6301EPA is housed in an 8-pin plastic DIP (PDIP) package, compatible with through-hole assembly and legacy prototyping. Pin spacing is 0.300", body width 0.355", and lead finish is leaded (SnPb) unless specified with '+' suffix for RoHS-compliant variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET IN | High-impedance reset comparator input | Accepts external resistor-divider to set custom reset threshold ≥1.22V; leakage <±1nA avoids threshold drift |
| 2 - GND | Analog/digital ground reference | Common return for internal comparators, timers, and output drivers; must be low-impedance |
| 3 - SRT | Reset timeout capacitor connection | Sinks 500nA precision current; CSRT value directly sets tRP = 2.67 × CSRT (pF → µs) |
| 4 - SWT | Watchdog timeout capacitor connection | Sinks 500nA precision current; CSWT value sets base tWD = 2.67 × CSWT (pF → µs) |
| 5 - WDS | Watchdog mode select control | Logic-low = normal mode (µs timeout); logic-high = extended mode (500× timeout); edge-triggered reset of watchdog counter |
| 6 - WDI | Watchdog input trigger | Rising/falling edge resets watchdog timer; minimum pulse width 30ns; high-impedance CMOS input in normal mode |
| 7 - RESET | Active-low open-drain reset output | Drives low during reset assertion; requires external pullup; sinks ≥3.2mA at VCC ≥4.5V |
| 8 - VCC | Positive supply input | Must be bypassed with 0.1µF ceramic capacitor near pin; powers all internal circuitry including comparators and timers |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable reset threshold | Settable to any voltage ≥1.22V using two external resistors - eliminates need for fixed-threshold variants across diverse supply rails |
| 500× watchdog timeout multiplier | WDS pin toggles between µs-scale (normal) and second-scale (extended) supervision - enables ultra-low-power sleep/wake architectures |
| Power-supply transient immunity | Withstands ≤50µs negative VCC glitches at 100mV overdrive without spurious reset - improves reliability in noisy industrial power domains |
| Guaranteed reset assertion at VCC ≥1V | Ensures valid reset signal during power-up/down even below typical logic thresholds - prevents µP lockup during brownout recovery |
| Open-drain active-low RESET output | Allows wired-OR with other reset sources and interfaces directly with bidirectional µP reset pins (e.g., 68HC11) without level-shifting |
Applications
| Medical Patient Monitor | Industrial PLC Controller |
|---|---|
Use Scenario: Continuous monitoring of 3.3V logic rail in portable ECG device with lithium coin-cell backup. IC Role / Device Role / Timing Role: Supervises main supply and triggers controlled µP reset on brownout; uses extended watchdog mode to wake µP every 90 seconds for sensor sampling. Use Value: 4µA quiescent current extends battery life beyond 5 years; 500× watchdog extension eliminates frequent wake-ups that would drain backup power. |
Use Scenario: Power sequencing and hang detection in DIN-rail mounted programmable logic controller operating in factory ambient (–25°C to +70°C). IC Role / Device Role / Timing Role: Monitors 5V system rail and asserts open-drain RESET to ARM Cortex-M7 core; uses adjustable reset threshold to tolerate 4.75V–5.25V AC/DC converter tolerance. Use Value: –40°C to +85°C rating ensures operation during cold startup and hot summer loading; transient immunity prevents false resets from motor drive noise. |
| Battery-Powered Data Logger | Set-Top Box Power Management |
Use Scenario: Long-term environmental logging node powered by AA alkaline cells, sleeping >99% of time. IC Role / Device Role / Timing Role: Generates periodic wake-up pulses via extended watchdog timeout; monitors VBAT decay and initiates graceful shutdown when voltage drops below 2.7V. Use Value: Adjustable reset threshold (set to 2.7V via R1/R2) enables precise end-of-life detection; low ICC preserves capacity during multi-week sleep intervals. |
Use Scenario: Reset coordination and software watchdog in cable TV set-top box with dual 3.3V/1.2V rails and HDMI PHY. IC Role / Device Role / Timing Role: Provides synchronized reset to SoC and peripheral ICs; uses normal-mode watchdog (2.8ms timeout) to detect firmware hangs during channel tuning. Use Value: Open-drain RESET output allows shared reset bus with multiple devices; 30ns WDI pulse width tolerance accommodates fast GPIO toggling in real-time video stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6303EPA | Push-pull active-low RESET output (vs. open-drain); same pinout, timing, and temp range | Eliminates need for external pullup resistor; not suitable for wired-OR reset buses | Select when board layout lacks space for pullup or when driving heavy capacitive loads (>100pF) |
| TPS3808G125DBVR | Fixed 1.25V reset threshold; 1.8µA ICC; no adjustable watchdog; SOT-23-6 package | Lacks external timing capacitor flexibility and 500× watchdog extension; smaller footprint but no WDS/WDI interface | Select for cost-sensitive, space-constrained designs where fixed threshold and basic watchdog suffice |
Compared with MAX6303EPA, MAX6301EPA offers wired-OR compatibility and reduced BOM count (no pullup), while TPS3808G125DBVR trades configurability for lower quiescent current and smaller size - making MAX6301EPA optimal for flexible, multi-source reset systems requiring extended supervision intervals.
Availability
MAX6301EPA is available at Aetrix Electronics and suitable for medical instrumentation, industrial PLCs, battery-powered data loggers, and set-top box power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6301EPA 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX6301–MAX6304 family was designed specifically for flexible, low-power microprocessor supervision in resource-constrained embedded systems - emphasizing adjustable thresholds, user-configurable timing, and robust operation across wide temperature and supply-voltage ranges.
FAQ
What is the guaranteed minimum supply voltage at which MAX6301EPA asserts RESET?
MAX6301EPA guarantees RESET assertion at VCC ≥1V. This ensures reliable reset generation during power-up and brownout conditions well below typical logic thresholds. The internal bandgap reference remains functional down to 1V, and the open-drain output maintains sufficient sink capability (≥50µA at VCC = 1V, TA = 0°C to +70°C) to drive standard µP reset inputs. This behavior is explicitly characterized in the Electrical Characteristics table under "Reset Output-Voltage Low" for MAX6301/MAX6303.
Can MAX6301EPA monitor a 3.3V supply while operating from a separate 5V rail?
Yes - MAX6301EPA can monitor any voltage source independent of VCC. Connect the 3.3V rail to RESET IN via an external resistor divider configured to produce 1.22V at the pin when the monitored voltage reaches the desired trip point (e.g., 3.1V). The device's high-impedance RESET IN input (leakage ±1nA) draws negligible current from the monitored rail. VCC may be supplied from 5V, and the internal comparator operates correctly regardless of the relationship between VCC and VIN, as confirmed in the "Monitoring Voltages Other than VCC" section and Figure 4 of the datasheet.
How does the WDS pin affect watchdog behavior in MAX6301EPA?
In MAX6301EPA, the WDS pin selects between two watchdog modes: when pulled to GND, it enables normal mode with µs-range timeout (tWD = 2.67 × CSWT); when pulled to VCC, it enables extended mode, multiplying tWD by 500× to yield ms- or second-scale intervals. A state change on WDS immediately clears and restarts the watchdog timer. This dual-mode architecture allows one hardware design to support both fast hang detection (normal mode) and ultra-low-power periodic wake-up (extended mode), as detailed in Figures 2a/2b and the "Watchdog Timer" section.
Is MAX6301EPA pin-compatible with other members of the MAX6301–MAX6304 family?
Yes - MAX6301EPA shares identical 8-pin PDIP pinout and electrical timing with MAX6302EPA, MAX6303EPA, and MAX6304EPA. All four variants use the same pin configuration (RESET IN, GND, SRT, SWT, WDS, WDI, RESET, VCC), same absolute maximum ratings, and same reset/watchdog timing equations. The only functional differences lie in reset polarity (active-low vs. active-high) and output type (open-drain vs. push-pull), which are determined by internal silicon configuration - not pin assignment or package.
What capacitor type is recommended for SRT and SWT connections on MAX6301EPA?
Ceramic capacitors are recommended for both SRT and SWT connections on MAX6301EPA due to their low leakage (<10nA) and stable capacitance over temperature and voltage. The internal 500nA timing current sources require minimal leakage to avoid timing errors - electrolytic or tantalum capacitors exhibit higher leakage and are unsuitable. For a 4.0ms reset timeout, CSRT = 1500pF ceramic (X7R or C0G) placed close to the SRT pin with short, isolated traces is optimal, as specified in the "Selecting the Reset and Watchdog Timeout Capacitor" section and Figure 3.
MAX6301EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 2.8ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX6301EPA FAQ
1.How can I place an order for MAX6301EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6301EPA 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 MAX6301EPA reliable?
The price and inventory of MAX6301EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6301EPA is usually 5 days.
3.What payment methods are accepted for MAX6301EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6301EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6301EPA?
MAX6301EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6301EPA 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 MAX6301EPA?
For technical support, including MAX6301EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6301EPA requirements.
6.How does Aetrix verify that MAX6301EPA is sourced from the original manufacturer or authorized distributors?
All MAX6301EPA 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 MAX6301EPA meets industry standards.
7.What is the process for return or replacement of MAX6301EPA?
All MAX6301EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6301EPA, 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 MAX6301EPA part is unused and in its original packaging.
Return procedure for MAX6301EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6301EPA 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…
