My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX706SCSA+T
- Part No.:
- MAX706SCSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX706SCSA+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,192
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX706SCSA+T from Maxim Integrated is an active-low microprocessor supervisory circuit designed for +3V to +5V systems, providing reset generation during power-up/down/brownout (2.93V threshold), 1.6s watchdog timeout, 1.25V power-fail comparator input, and debounced manual-reset input. It operates in 8-pin SO package with 200ms reset pulse width and 100µA quiescent current, used in portable instruments and battery-powered controllers.
For engineers reviewing the MAX706SCSA+T datasheet, MAX706SCSA+T pinout, MAX706SCSA+T application, or MAX706SCSA+T equivalent, this page delivers verified functional identity, confirmed pin roles, exact reset threshold (2.93V), watchdog timing (1.6s), and validated alternative options for critical µP power monitoring designs.
Technical Context
The MAX706SCSA+T implements a precision voltage monitor with fixed 2.93V reset threshold and 20mV hysteresis, guaranteeing RESET assertion down to VCC = 1V. Its internal timer generates a 200ms reset pulse after VCC exceeds threshold or MR release.
A dedicated watchdog circuit monitors WDI transitions and asserts WDO low if no toggle occurs within 1.6s; the watchdog remains enabled at all times (unlike AP/AR/AS/AT variants). The PFI comparator uses an internal 1.25V reference to support external power-fail or low-battery detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V (VCC falling); ensures reliable reset assertion for +3.3V µP systems before brownout |
| Reset Pulse Width | 200ms typical; provides sufficient time for µP initialization and peripheral stabilization |
| Watchdog Timeout | 1.6s nominal; detects µP lockup without requiring software intervention |
| Quiescent Current | 100µA max; enables long battery life in portable equipment |
| Supply Voltage Range | 3.0V to 5.5V; supports dual-supply operation from +3.3V batteries or +5V adapters |
| PFI Threshold | 1.25V ±50mV; allows configurable power-fail warning via external resistor divider |
| Operating Temperature | 0°C to +70°C; suitable for commercial-grade embedded instrumentation |
Pinout & Package
MAX706SCSA+T is housed in an 8-pin SO (Small Outline) package (S8-2), surface-mount compatible with standard PCB assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Active-low manual-reset input | TTL/CMOS-compatible; 500ns minimum pulse width at VCC=3V; internally pulled up with 70µA source |
| 2 VCC | Positive supply input | Accepts 3.0V–5.5V; bypass with 0.1µF capacitor to GND for noise immunity |
| 3 GND | Ground reference | Common return path for all internal circuits and output sinks |
| 4 PFI | Power-fail comparator input | Monitors external voltage divider; asserts PFO when input falls below 1.25V |
| 5 PFO | Active-low power-fail output | Open-drain output; sinks current when PFI < 1.25V; used for µP interrupt or reset initiation |
| 6 WDI | Watchdog input | Edge-sensitive; requires transition every 1.6s to prevent WDO assertion; no disable capability |
| 7 RESET | Active-low reset output | Guaranteed logic-low for VCC ≥1V during undervoltage; 200ms deassertion delay after recovery |
| 8 WDO | Active-low watchdog output | Asserts low on watchdog timeout or VCC drop below 2.93V; resets only on WDI edge or VCC recovery |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.93V reset threshold | Matches +3.3V µP supply tolerance; eliminates need for external resistor network |
| Guaranteed RESET assertion to VCC = 1V | Ensures deterministic reset behavior during deep brownout conditions |
| Debounced manual-reset input | 140ms minimum reset pulse width prevents contact bounce false triggers |
| 1.25V precision PFI reference | Enables accurate low-battery detection or unregulated supply monitoring with <1% error |
| 8-pin SO package (S8-2) | Standard footprint compatible with automated SMT assembly and reflow profiles |
Applications
| Portable Data Loggers | Battery-Powered Medical Sensors |
|---|---|
|
Use Scenario: Long-duration field deployment with lithium primary cells subject to gradual voltage decay. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET when cell voltage drops below 2.93V and triggering PFO-based alert before shutdown. Use Value: Prevents corrupted data writes by ensuring µP enters safe state prior to brownout-induced instability. |
Use Scenario: Wearable ECG monitor powered by coin-cell battery with strict low-power requirements. IC Role / Device Role / Timing Role: Monitoring VCC and generating 200ms reset pulse while using PFI to detect battery depletion at 2.4V via resistor divider. Use Value: Extends usable battery life by enabling graceful shutdown and memory preservation before voltage collapse. |
| Industrial PLC I/O Modules | Smart Energy Meters |
|
Use Scenario: DIN-rail mounted controller exposed to 24VDC supply fluctuations and EMI. IC Role / Device Role / Timing Role: Providing robust power-on reset and watchdog supervision of ARM Cortex-M µP running real-time control firmware. Use Value: Eliminates need for discrete RC reset networks and improves immunity to transient supply dips. |
Use Scenario: Revenue-grade meter operating from AC-DC adapter with backup supercapacitor. IC Role / Device Role / Timing Role: Using PFO to trigger µP interrupt when main supply fails, initiating secure flash write and RTC backup. Use Value: Guarantees data integrity during grid outage by synchronizing power-fail response with µP execution context. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX706SESA+ | Same functionality and pinout; rated for -40°C to +85°C industrial temperature range | Required for extended-temperature deployments (e.g., outdoor utility meters) | Select MAX706SESA+ when ambient operating temperature exceeds +70°C |
| TPS3808G33DBVR | 3.3V fixed reset threshold; 350ms reset timeout; no integrated watchdog; 2.5µA quiescent current | Lacks watchdog and PFI comparator; optimized for ultra-low-power applications without fail-safe monitoring | Choose TPS3808G33DBVR only if watchdog and power-fail warning are unnecessary and sub-µA supply current is mandatory |
Compared with MAX706SESA+, the MAX706SCSA+T offers identical core supervision but narrower temperature rating; compared with TPS3808G33DBVR, it provides full watchdog and PFI functionality at higher quiescent current, making it suitable for systems requiring comprehensive fault coverage.
Availability
MAX706SCSA+T is available at Aetrix Electronics and suitable for portable instruments, battery-powered medical sensors, and industrial PLC I/O modules requiring stable component supply across commercial temperature ranges.
Supply support for MAX706SCSA+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 power management, sensing, and interface applications.
The MAX706 family targets cost-sensitive microprocessor supervision in battery-powered and industrial systems, delivering integrated reset, watchdog, and power-fail monitoring in minimal footprint.
FAQ
What is the reset threshold voltage for MAX706SCSA+T?
The MAX706SCSA+T has a fixed reset threshold of 2.93V (VCC falling), with 20mV hysteresis. This value is factory-trimmed and guaranteed over temperature. It ensures reliable reset assertion for +3.3V microprocessors before brownout occurs. The MAX706SCSA+T does not support adjustable thresholds - the 2.93V level is inherent to the 'S' suffix variant.
Does MAX706SCSA+T include a watchdog timer function?
Yes, the MAX706SCSA+T includes a watchdog timer with a nominal timeout period of 1.6 seconds. A rising or falling edge on the WDI pin must occur within this interval to prevent WDO assertion. Unlike the AP/AR/AS/AT variants, the watchdog in MAX706SCSA+T cannot be disabled - it remains active whenever VCC is within specification.
What is the function of the PFI and PFO pins on MAX706SCSA+T?
The PFI (Power-Fail Input) pin connects to an external resistive divider to monitor auxiliary supplies or battery voltage. When PFI falls below the internal 1.25V reference, the open-drain PFO (Power-Fail Output) pulls low to signal impending failure. In MAX706SCSA+T, PFO can drive a µP interrupt or be tied to MR to initiate a controlled reset, enabling early-warning power management.
Can MAX706SCSA+T operate from a +3.3V supply?
Yes, MAX706SCSA+T is fully specified for operation from 3.0V to 5.5V, including +3.3V nominal supplies. At 3.3V, it delivers 100µA quiescent current, 200ms reset pulse width, and valid logic levels on all outputs. The 2.93V reset threshold provides appropriate margin above 3.3V system minimums, making MAX706SCSA+T ideal for modern low-voltage µP platforms.
Is MAX706SCSA+T pin-compatible with other MAX706 variants?
Yes, MAX706SCSA+T shares identical 8-pin SO (S8-2) pinout with all MAX706P/R/S/T and MAX706AP/AR/AS/AT variants. Pin functions - MR, VCC, GND, PFI, PFO, WDI, RESET, WDO - are consistent across the family. The only differences are reset threshold (2.93V for 'S'), reset polarity (active-low), and watchdog enable behavior - all electrically compatible without PCB changes.
MAX706SCSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX706SCSA+T FAQ
1.How can I place an order for MAX706SCSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX706SCSA+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 MAX706SCSA+T reliable?
The price and inventory of MAX706SCSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX706SCSA+T is usually 5 days.
3.What payment methods are accepted for MAX706SCSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX706SCSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX706SCSA+T?
MAX706SCSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX706SCSA+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 MAX706SCSA+T?
For technical support, including MAX706SCSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX706SCSA+T requirements.
6.How does Aetrix verify that MAX706SCSA+T is sourced from the original manufacturer or authorized distributors?
All MAX706SCSA+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 MAX706SCSA+T meets industry standards.
7.What is the process for return or replacement of MAX706SCSA+T?
All MAX706SCSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX706SCSA+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 MAX706SCSA+T part is unused and in its original packaging.
Return procedure for MAX706SCSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX706SCSA+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…
