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Analog Devices Inc./Maxim Integrated MAX795TEPA+
- Part No.:
- MAX795TEPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX795TEPA+.pdf
- Description:
- IC SUPERVISOR MPU 8-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:243
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Product details
Overview
MAX795TEPA+ from Maxim Integrated is an 8-pin microprocessor supervisory circuit for 3.0V/3.3V systems, providing precision reset assertion (3.00V–3.15V threshold), backup-battery switchover (VBATT > VCC supported), and chip-enable signal gating with ≤7ns propagation delay. It monitors critical power conditions in battery-backed embedded controllers and portable equipment.
For engineers reviewing the MAX795TEPA+ datasheet, MAX795TEPA+ pinout, MAX795TEPA+ application, or MAX795TEPA+ equivalent, key selection criteria include guaranteed reset assertion down to VCC = 1V, battery-switch threshold at 2.55V (VCC falling), low-line early-warning output, and compatibility with lithium backup batteries up to 3.6V.
Technical Context
The MAX795TEPA+ integrates a fixed-threshold reset comparator (T-suffix = 3.00V–3.15V), a VCC-falling battery switch comparator (VSW = 2.55V), and a low-line warning comparator (VLR = 3.00V, hysteresis 10mV). Its CE IN-to-CE OUT transmission gate operates with ≤7ns propagation delay and supports CMOS RAM write protection during undervoltage events.
Unlike the MAX793/MAX794, the MAX795TEPA+ omits watchdog timer, manual reset input, battery OK output, and external reset threshold programming - confirming its role as a streamlined, cost-optimized supervisory IC for space-constrained 8-pin DIP/SO applications requiring only core reset + battery switchover + CE gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V to 3.15V (VCC falling); ensures reliable reset before 3.3V supply drops below system tolerance limit |
| Battery Switch Threshold | 2.55V (VCC falling); enables seamless switchover to 3.6V lithium battery when main supply dips |
| CE Propagation Delay | ≤7ns; preserves timing integrity of chip-enable signals during normal operation |
| VCC Supply Current | 46µA typical (VCC = 3.3V); ultra-low quiescent current extends battery life in portable systems |
| Operating Voltage Range | VCC = 2.72V to 5.5V; supports 3.0V/3.3V systems and backward compatibility with 5V logic |
| Package | 8-pin plastic DIP; through-hole mounting compatible with legacy PCB assembly and prototyping |
| Temperature Range | 0°C to +70°C; suitable for commercial-grade embedded controller environments |
Pinout & Package
MAX795TEPA+ uses an 8-pin plastic DIP package with 0.3-inch width, lead-free finish (+ suffix), and standard through-hole footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Supply output for CMOS RAM | Switches between VCC and BATT based on voltage thresholds; drives RAM VDD directly |
| 2 VCC | Main supply input | Primary power rail monitoring point; powers internal comparators and gating logic |
| 3 GND | Ground reference | Common return path for all analog and digital functions; must be low-impedance |
| 4 PFI | Power-fail comparator input | Monitors external voltage (e.g., +5V rail); triggers PFO low when input falls below 1.212V |
| 5 BATT ON | Battery status indicator | Active-high open-drain output signaling BATT is active; drives external PMOS gate |
| 6 PFO | Power-fail comparator output | Open-drain output pulled high externally; asserts low on power failure or VCC < VSW |
| 7 RESET | Active-low reset output | Open-drain, guaranteed low for VCC < 3.00V; requires external pullup to VCC |
| 8 CE IN | Chip-enable input | Controls CE gating path; high-impedance when reset asserted to prevent RAM corruption |
Key Features
| Feature | Design Value |
|---|---|
| Fixed reset threshold (T-suffix) | 3.00V–3.15V range optimized for 3.3V ±5% supplies; eliminates external resistor divider complexity |
| Battery switchover with VBATT > VCC | Supports 3.6V lithium coin cells without level-shifting; enables long-term data retention in power-loss scenarios |
| CE signal gating with ≤7ns delay | Prevents spurious writes to CMOS RAM during brownout; meets timing requirements of fast µPs |
| Guaranteed reset assertion to VCC = 1V | Ensures robust reset behavior even during deep undervoltage; prevents code execution errors |
| Low-line early-warning output (LOWLINE) | Asserts at VCC = 3.00V (10mV hysteresis); provides NMI-capable alert before reset triggers |
Applications
| Battery-Powered Portable Equipment | Embedded Controller Power Monitoring |
|---|---|
Use Scenario: Handheld medical device with nonvolatile RAM storing calibration data and operating on a 3.6V lithium coin cell. IC Role / Device Role / Timing Role: MAX795TEPA+ monitors 3.3V main supply and switches RAM VDD to battery upon drop below 2.55V; asserts RESET at 3.00V to halt processor. Use Value: Prevents data corruption during battery swap or main supply interruption while maintaining RAM contents via seamless switchover. | Use Scenario: Industrial PLC module with CMOS SRAM holding configuration registers and real-time clock backup. IC Role / Device Role / Timing Role: MAX795TEPA+ gates CE signal to RAM during VCC brownout and asserts RESET before supply falls below safe operating margin. Use Value: Eliminates need for external CE logic and discrete reset IC, reducing BOM count and PCB area in space-constrained control modules. |
| Critical µP Power Monitoring | Intelligent Sensor Node |
Use Scenario: Remote environmental sensor node powered by solar-charged Li-ion, requiring deterministic reset on low-voltage cutoff. IC Role / Device Role / Timing Role: MAX795TEPA+ provides precise 3.00V reset threshold and low-line warning (LOWLINE) to trigger graceful shutdown before reset. Use Value: Enables firmware-controlled save-and-sleep sequence using LOWLINE interrupt, maximizing usable battery capacity. | Use Scenario: Wireless IoT sensor with EEPROM and RTC, operating intermittently on 3.3V supply with 3.6V backup battery. IC Role / Device Role / Timing Role: MAX795TEPA+ manages RAM power domain switchover and delivers clean reset pulse to MCU on power-up and brownout. Use Value: Guarantees known MCU state and preserved RAM data across thousands of power cycles without external supervision logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX793TEPA+ | 16-pin DIP/SO; includes watchdog timer, manual reset, battery OK output, and PFI comparator | Required where system-level fault recovery (watchdog), user-initiated reset, or battery health monitoring is needed | Select MAX793TEPA+ only if additional features justify larger footprint and higher cost; not pin-compatible with MAX795TEPA+ |
| TPS3808G30DBVR | Single-channel 3.0V supervisor in SOT-23-6; no battery switchover or CE gating; 2% reset threshold accuracy | Suitable for simple reset-only applications without backup power management or memory protection | Choose TPS3808G30DBVR for minimal-area, low-cost reset-only use; lacks MAX795TEPA+'s battery and CE functionality |
Compared with MAX793TEPA+, MAX795TEPA+ reduces pin count and feature set to optimize for compact 8-pin designs needing only reset + battery switchover + CE gating; versus TPS3808G30DBVR, it adds critical battery management and memory protection capabilities absent in basic supervisors.
Availability
MAX795TEPA+ is available at Aetrix Electronics and suitable for battery-powered portable equipment, embedded controller power monitoring, and critical µP power monitoring requiring stable component supply across commercial temperature ranges.
Supply support for MAX795TEPA+ 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 in industrial, automotive, and computing markets.
The MAX795TEPA+ belongs to Maxim's microprocessor supervisory product line, engineered specifically for space-constrained 3.0V/3.3V systems requiring integrated reset, battery switchover, and chip-enable protection without added complexity.
FAQ
What is the reset threshold voltage range for MAX795TEPA+?
The MAX795TEPA+ has a fixed reset threshold range of 3.00V to 3.15V (VCC falling), specified for 3.3V ±5% supply systems. This ensures reset is asserted before the supply falls below the minimum operational voltage of downstream 3.3V logic, and guarantees valid reset behavior down to VCC = 1V. The 'T' suffix in MAX795TEPA+ explicitly denotes this threshold variant.
Does MAX795TEPA+ support backup battery voltages higher than VCC?
Yes, MAX795TEPA+ supports VBATT > VCC - specifically up to 3.6V lithium batteries while operating from a 3.0V or 3.3V VCC supply. Its internal p-channel MOSFET switch automatically connects OUT to BATT when VCC falls below 2.55V (VCC falling), enabling uninterrupted power to CMOS RAM without external level-shifting circuitry.
What is the function of the CE IN and CE OUT pins on MAX795TEPA+?
MAX795TEPA+ does not have a CE OUT pin; it uses CE IN (Pin 8) to enable internal chip-enable gating. When reset is deasserted, CE IN passes through to control external memory enable logic; when reset is asserted, CE IN is disabled (high-impedance) to prevent spurious writes to CMOS RAM during undervoltage. The gating path is internal - no CE OUT pin exists on the 8-pin MAX795TEPA+.
Can MAX795TEPA+ generate a watchdog timeout signal?
No, MAX795TEPA+ does not include a watchdog timer. Watchdog functionality (WDI/WDO) is present only in the MAX793 and MAX794 variants. The MAX795TEPA+ is a streamlined version omitting watchdog, manual reset (MR), battery OK (BATT OK), and programmable reset inputs - confirmed by its 8-pin count and feature selector guide.
What package type and lead finish does MAX795TEPA+ use?
MAX795TEPA+ uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and lead-free (RoHS-compliant) finish, indicated by the '+' suffix per Maxim's ordering convention. It is rated for 0°C to +70°C operation and is compatible with standard through-hole PCB assembly processes.
MAX795TEPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX795TEPA+ FAQ
1.How can I place an order for MAX795TEPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX795TEPA+ 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 MAX795TEPA+ reliable?
The price and inventory of MAX795TEPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX795TEPA+ is usually 5 days.
3.What payment methods are accepted for MAX795TEPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX795TEPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX795TEPA+?
MAX795TEPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX795TEPA+ 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 MAX795TEPA+?
For technical support, including MAX795TEPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX795TEPA+ requirements.
6.How does Aetrix verify that MAX795TEPA+ is sourced from the original manufacturer or authorized distributors?
All MAX795TEPA+ 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 MAX795TEPA+ meets industry standards.
7.What is the process for return or replacement of MAX795TEPA+?
All MAX795TEPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX795TEPA+, 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 MAX795TEPA+ part is unused and in its original packaging.
Return procedure for MAX795TEPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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