My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX708TEUA+
- Part No.:
- MAX708TEUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX708TEUA+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,042
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX708TEUA+ from Maxim Integrated is a +3V microprocessor supervisory circuit with active-high and active-low reset outputs, 3.08V reset threshold, 200ms reset pulse width, 100µA quiescent current, and 1.25V power-fail comparator input - used in battery-powered portable instruments to ensure reliable µP startup and brownout recovery.
For engineers reviewing the MAX708TEUA+ datasheet, MAX708TEUA+ pinout, MAX708TEUA+ application, or MAX708TEUA+ equivalent, this page delivers verified functional identity, package mapping, reset timing behavior, PFI/PFO interface details, and validated alternatives for industrial embedded and portable system design.
Technical Context
The MAX708TEUA+ integrates dual-reset generation (RESET and RESET), precision voltage monitoring at 3.08V ±1.5%, and a dedicated 1.25V reference comparator for external power-fail or low-battery detection. It operates across VCC = 3.15V to 5.5V and guarantees RESET assertion down to VCC = 1V.
Unlike MAX706 variants, the MAX708TEUA+ omits the watchdog timer and instead provides complementary reset outputs - enabling direct connection to both active-high and active-low µP reset inputs without external logic inversion. Its MR input is TTL/CMOS-compatible with 140ms minimum debounce via internal timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±1.5% - precisely monitors +3.3V supply rails during power-up/down and brownout conditions |
| Reset Pulse Width | 200ms typical - ensures sufficient µP initialization time before release from reset |
| Supply Current | 100µA max at VCC < 3.6V - enables long battery life in portable instrumentation |
| Power-Fail Input Threshold | 1.25V ±40mV - supports configurable early-warning detection of unregulated supply collapse |
| Operating Voltage Range | 3.15V to 5.5V - compatible with both +3.3V and +5V µP systems |
| Temperature Range | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Package | 8-pin µMAX (U8-1) - 3mm × 3mm surface-mount footprint with thermal pad for compact PCB layout |
Pinout & Package
MAX708TEUA+ is housed in an 8-pin µMAX package (U8-1), a lead-free, thermally enhanced surface-mount variant of the SO-8 outline with exposed paddle for improved heat dissipation and board-level reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Active-low manual reset input | TTL/CMOS-compatible; internally pulled up with 70µA source; triggers 200ms reset pulse when pulled below 0.6V |
| 2 (VCC) | Positive supply input | Accepts 3.15V–5.5V; powers all internal comparators, timers, and output drivers |
| 3 (GND) | Ground reference | Common return path for all analog and digital functions; must be low-impedance for noise immunity |
| 4 (PFI) | Power-fail comparator input | High-impedance node referenced to internal 1.25V; connects to resistive divider for custom trip-point setting |
| 5 (PFO) | Active-low power-fail output | Sinks current when PFI < 1.25V; used to interrupt µP or trigger backup sequence prior to main supply collapse |
| 6 (RESET) | Active-low reset output | Asserted low when VCC < 3.08V or MR is low; remains low for 200ms after recovery |
| 7 (N.C.) | No connection | Not internally bonded; must remain unconnected on PCB |
| 8 (RESET) | Active-high reset output | Complementary to pin 6; asserted high under same conditions; eliminates need for external inverter |
Key Features
| Feature | Design Value |
|---|---|
| Dual reset outputs | Simultaneous active-high (RESET) and active-low (RESET) signals enable direct interface to diverse µP families without level-shifting |
| Precision 3.08V threshold | ±1.5% tolerance over -40°C to +85°C ensures robust detection of +3.3V supply droop before µP malfunction |
| Guaranteed reset at VCC = 1V | Ensures deterministic reset assertion during deep brownout, preventing undefined µP state even near supply collapse |
| 1.25V reference comparator | Enables accurate, externally adjustable power-fail warning for unregulated supplies or secondary rails (e.g., +12V, -3V) |
| 200ms reset timeout | Internally generated delay meets JEDEC JESD22-B102 requirements for µP initialization stability |
Applications
| Portable Medical Instrumentation | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Handheld ECG monitor powered by single Li-ion cell with buck-boost regulator delivering +3.3V. IC Role / Device Role / Timing Role: Supervises regulated +3.3V rail and monitors battery voltage via PFI divider to initiate graceful shutdown at 3.2V. Use Value: Dual RESET/RESET outputs directly drive both µP and FPGA reset pins; 100µA quiescent current extends runtime between charges. |
Use Scenario: Remote environmental sensor node operating on AA batteries with intermittent GSM transmission. IC Role / Device Role / Timing Role: Ensures µP remains held in reset during cold-start until regulated supply stabilizes above 3.08V. Use Value: 200ms reset pulse prevents premature firmware execution; PFO triggers backup RAM save before main supply dropout. |
| Industrial PLC I/O Modules | POS Terminal Power Management |
|
Use Scenario: DIN-rail mounted controller with isolated +3.3V logic supply and +24V field bus interface. IC Role / Device Role / Timing Role: Monitors +3.3V logic rail and uses PFI to detect +24V field supply sag via resistor network. Use Value: Active-high RESET drives µP; active-low RESET drives watchdog supervisor IC - eliminating discrete inverters. |
Use Scenario: Retail point-of-sale terminal with AC adapter and LiPo backup, requiring seamless switchover. IC Role / Device Role / Timing Role: Detects AC loss via PFI and asserts RESET to halt transaction processing while switching to battery. Use Value: Guaranteed reset assertion to VCC = 1V prevents data corruption during transition; µMAX package saves board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX708SEUA+ | 2.93V reset threshold (vs. 3.08V); otherwise identical pinout, features, and timing | Suitable where system requires earlier reset assertion during +3.3V droop (e.g., margin-sensitive µPs) | Select MAX708SEUA+ if design tolerates 150mV lower trip point; no layout change required |
| MAX708REUA+ | 2.63V reset threshold (vs. 3.08V); same dual-reset architecture and µMAX package | Preferred for +3.0V systems or designs needing maximum brownout headroom before reset | Choose MAX708REUA+ for legacy +3.0V µPs or wider supply tolerance; functionally identical except threshold |
Compared with MAX708TEUA+, MAX708SEUA+ and MAX708REUA+ offer identical dual-reset functionality and µMAX packaging but differ only in factory-trimmed reset thresholds - enabling precise matching to system supply rails without redesigning supervision logic.
Availability
MAX708TEUA+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial PLC modules, and POS terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX708TEUA+ 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, sensing, and interface applications in industrial, medical, and communications systems.
The MAX708 series was developed specifically for cost-sensitive, space-constrained µP systems requiring guaranteed reset behavior, dual-output flexibility, and low-power supervision of +3V/+3.3V supplies.
FAQ
What is the reset threshold voltage of the MAX708TEUA+?
The MAX708TEUA+ has a factory-trimmed reset threshold of 3.08V ±1.5%, specified over the full -40°C to +85°C operating range. This value is optimized for reliable monitoring of +3.3V power rails during power-up, brownout, and power-down events. The MAX708TEUA+ guarantees RESET assertion as VCC falls below this threshold and deassertion after VCC rises above it with a 200ms delay.
Does the MAX708TEUA+ include a watchdog timer function?
No, the MAX708TEUA+ does not include a watchdog timer. It belongs to the MAX708 family, which replaces the watchdog input/output (WDI/WDO) of the MAX706 series with dual complementary reset outputs (RESET and RESET). This architecture simplifies designs requiring both active-high and active-low reset signaling without external logic, distinguishing MAX708TEUA+ from watchdog-equipped variants like MAX706TEUA+.
What is the purpose of the PFI and PFO pins on the MAX708TEUA+?
The PFI (Power-Fail Input) pin on the MAX708TEUA+ connects to an external resistive divider to monitor auxiliary voltages (e.g., unregulated DC or negative rails), comparing them against an internal 1.25V reference. When PFI falls below 1.25V, the PFO (Power-Fail Output) pin goes active-low, enabling early-warning interrupts or backup sequencing. This allows the MAX708TEUA+ to supervise multiple supply domains beyond its primary VCC rail.
Can the MAX708TEUA+ operate with a 3.0V supply?
No - the MAX708TEUA+ is specified for VCC = 3.15V to 5.5V, per its "T" suffix designation. Using it with a 3.0V supply violates the absolute minimum operating voltage and may result in unreliable reset assertion or failure to guarantee RESET behavior down to VCC = 1V. For 3.0V systems, the MAX708SEUA+ (2.93V threshold) or MAX708REUA+ (2.63V threshold) are appropriate alternatives.
What package type is used for the MAX708TEUA+?
The MAX708TEUA+ is supplied in an 8-pin µMAX package (package code U8-1), a miniature 3mm × 3mm surface-mount outline with exposed thermal pad. This RoHS-compliant, lead-free package offers superior thermal performance and board-area efficiency compared to standard SO-8, making it ideal for space-constrained portable and industrial applications where the MAX708TEUA+ is commonly deployed.
MAX708TEUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX708TEUA+ FAQ
1.How can I place an order for MAX708TEUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX708TEUA+ 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 MAX708TEUA+ reliable?
The price and inventory of MAX708TEUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX708TEUA+ is usually 5 days.
3.What payment methods are accepted for MAX708TEUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX708TEUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX708TEUA+?
MAX708TEUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX708TEUA+ 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 MAX708TEUA+?
For technical support, including MAX708TEUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX708TEUA+ requirements.
6.How does Aetrix verify that MAX708TEUA+ is sourced from the original manufacturer or authorized distributors?
All MAX708TEUA+ 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 MAX708TEUA+ meets industry standards.
7.What is the process for return or replacement of MAX708TEUA+?
All MAX708TEUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX708TEUA+, 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 MAX708TEUA+ part is unused and in its original packaging.
Return procedure for MAX708TEUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX708TEUA+ 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…
