My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX795TESA+T
- Part No.:
- MAX795TESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX795TESA+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,620
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX795TESA+T from Maxim Integrated is an 8-pin SO microprocessor supervisory circuit designed for +3.0V/+3.3V systems, providing precision reset assertion (3.00V–3.15V threshold), backup-battery switchover (VBATT > VCC supported), and chip-enable gating with ≤7ns propagation delay. It monitors critical power conditions in battery-backed CMOS RAM systems and asserts reset down to VCC = 1V.
For engineers reviewing the MAX795TESA+T datasheet, MAX795TESA+T pinout, MAX795TESA+T application, or MAX795TESA+T equivalent, key selection criteria include guaranteed reset assertion at low VCC, battery-switching hysteresis, CE gating timing integrity, and compatibility with lithium backup batteries up to 3.6V.
Technical Context
The MAX795TESA+T implements a fixed-threshold reset comparator with 10mV typical hysteresis to prevent oscillation during VCC transitions, and integrates a bidirectional p-channel MOSFET switch for seamless VCC-to-battery switchover when VCC falls below VSW (2.55V–2.68V). Its CE IN-to-CE OUT transmission gate operates with <7ns propagation delay and maintains high-impedance isolation during reset assertion.
Unlike the MAX794, it lacks adjustable reset threshold and watchdog functionality; unlike the MAX793, it omits BATT OK output and battery freshness seal. Its 8-pin SO package supports compact placement in space-constrained portable controllers requiring stable supply monitoring and RAM write protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V–3.15V (VCC falling); ensures reliable reset before 3.3V system brownout exceeds 10% tolerance |
| Battery Switch Threshold | 2.55V–2.68V (VCC falling); enables automatic switchover to 3.6V lithium battery before VCC drops below RAM retention voltage |
| Reset Timeout Period | 140–280ms; guarantees minimum reset pulse width for full µP initialization across temperature |
| CE IN-to-CE OUT Delay | ≤7ns max; preserves timing integrity of chip-enable signals during undervoltage events |
| VCC Supply Current | 24–35µA (VCC = 3.3V); minimizes quiescent load on primary supply in always-on monitoring mode |
| Backup-Battery Leakage | 1µA max; extends shelf life of connected lithium cell by limiting standby drain |
| Operating Temperature | 0°C to +70°C; validated for commercial-grade embedded controllers and portable equipment |
Pinout & Package
MAX795TESA+T is housed in an 8-pin SO (Small Outline) package with 1.27mm pitch, JEDEC MS-012AC compliant, suitable for reflow soldering and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Supply Output | Switched output connected to VCC or BATT; powers CMOS RAM during normal/battery-backup modes |
| 2 VCC | Main Supply Input | +3.0V/+3.3V primary supply input; reset asserted when voltage falls below 3.00V–3.15V |
| 3 GND | Ground Reference | Common return path for all internal circuits and external pullups |
| 4 PFI | Power-Fail Comparator Input | Monitors external voltage; pulls PFO low when input falls below 1.212V–1.262V |
| 5 BATT ON | Battery-Switch Status Output | Active-high open-drain signal indicating OUT is sourced from BATT (enables external PMOS driver) |
| 6 PFO | Power-Fail Comparator Output | Open-drain output pulled low during power-fail or battery switchover; used to enable battery freshness seal |
| 7 RESET | Active-Low Reset Output | Open-drain reset signal; guaranteed low for VCC < 3.00V and remains low for ≥140ms after recovery |
| 8 MR | Manual Reset Input | Active-low input with 70µA internal pullup; asserts reset for 200ms after release to ensure µP reset completion |
Key Features
| Feature | Design Value |
|---|---|
| Precision Fixed Reset Threshold | 3.00V–3.15V range tightly matched to 3.3V ±5% supply tolerance, eliminating external resistor network |
| Backup-Battery Switchover | Supports VBATT up to 3.6V exceeding VCC, enabling long-life lithium coin-cell backup without level-shifting |
| Chip-Enable Gating | Sub-7ns CE IN-to-CE OUT propagation ensures RAM write cycles complete before undervoltage corruption occurs |
| Guaranteed Reset to 1V | Asserts valid reset signal even as VCC collapses to 1V, ensuring µP remains held in reset until full power loss |
| Low Quiescent Current | 24–35µA VCC supply current enables multi-year operation in battery-backed systems with minimal drain |
Applications
| Battery-Powered Computers | Embedded Controllers |
|---|---|
Use Scenario: Portable data logger with nonvolatile RAM retains configuration during main power removal. IC Role / Device Role / Timing Role: Supervisory IC provides VCC monitoring, battery switchover, and CE gating to protect RAM writes during brownout. Use Value: Prevents RAM corruption by disabling CE during VCC drop and asserting reset before supply falls below 3.00V. | Use Scenario: Industrial PLC module uses CMOS RAM for runtime variables and requires fail-safe restart on power anomaly. IC Role / Device Role / Timing Role: Resets µP and gates CE signals during undervoltage, ensuring deterministic boot state after recovery. Use Value: Guarantees 140–280ms reset pulse width and sub-7ns CE delay to meet IEC 61131-2 timing requirements. |
| Intelligent Controllers | Critical µP Power Monitoring |
Use Scenario: Smart meter with real-time clock and firmware state storage relies on battery-backed RAM for tariff data. IC Role / Device Role / Timing Role: Monitors 3.3V rail and switches RAM supply to 3.6V lithium cell before VCC drops below 2.68V. Use Value: Enables >10-year battery life via 1µA max BATT leakage and precise switchover hysteresis. | Use Scenario: Medical diagnostic device must maintain µP in reset until stable 3.3V is confirmed post-power-up. IC Role / Device Role / Timing Role: Provides monotonic reset assertion with 3.00V–3.15V threshold and 200ms MR debounce. Use Value: Eliminates spurious resets during slow-ramp power supplies by guaranteeing reset hold-down to VCC = 1V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX793TESA+ | 16-pin SO; includes BATT OK output, battery freshness seal, and independent watchdog timer | Required where battery status reporting or watchdog fault detection is needed alongside reset supervision | Select MAX793TESA+ only if BATT OK monitoring or 1.6s watchdog timeout adds value; otherwise MAX795TESA+T offers smaller footprint and lower cost |
| TPS3808G33DBVR | TI part; 3.3V fixed reset threshold (3.08V), 200ms timeout, no battery switchover or CE gating | Suitable for basic reset-only applications without backup power management or RAM protection | Choose TPS3808G33DBVR when battery backup and CE control are unnecessary; MAX795TESA+T is required for integrated switchover and gating |
Compared with MAX793TESA+, MAX795TESA+T reduces pin count and cost by omitting watchdog and BATT OK functions while retaining identical reset accuracy and battery switchover capability; versus TPS3808G33DBVR, it uniquely integrates battery switching and CE gating-critical for RAM-backed portable systems.
Availability
MAX795TESA+T is available at Aetrix Electronics and suitable for battery-powered computers, embedded controllers, and intelligent controllers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX795TESA+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, sensing, and interface applications in industrial, computing, and portable markets.
The MAX793/MAX794/MAX795 product line delivers integrated microprocessor supervision with battery backup management and memory protection, targeting space-constrained systems needing reliable power monitoring and fail-safe restart.
FAQ
What is the exact reset threshold voltage range for MAX795TESA+T?
The MAX795TESA+T has a fixed reset threshold range of 3.00V to 3.15V for VCC falling, specified over temperature and process variation. This range aligns with 3.3V ±5% supply tolerance and ensures reset assertion before system brownout exceeds 10%. The threshold is factory-trimmed and does not require external components.
Does MAX795TESA+T support backup-battery switchover with VBATT > VCC?
Yes, MAX795TESA+T supports backup-battery switchover with VBATT up to 3.6V exceeding VCC. When VCC falls below the battery switch threshold (2.55V–2.68V), OUT automatically connects to BATT. The internal p-channel MOSFET switch ensures seamless transition without external circuitry, preserving CMOS RAM data during main power loss.
What is the function of the BATT ON pin on MAX795TESA+T?
The BATT ON pin on MAX795TESA+T is an active-high open-drain output that signals when OUT is sourced from the backup battery. It drives high during battery-backup mode to enable external PMOS/PMOS drivers for higher-current loads (>75mA), allowing the MAX795TESA+T to manage both logic-level signaling and power-path control in one device.
Can MAX795TESA+T be used without a backup battery?
Yes, MAX795TESA+T can be used without a backup battery. Connect BATT to VCC and leave PFO unconnected or tie to VCC. In this configuration, the device operates as a standard 3.3V supervisory circuit with reset, manual reset, power-fail warning, and CE gating-retaining full functionality except battery switchover and BATT ON signaling.
What is the maximum capacitive load supported on the CE OUT pin of MAX795TESA+T?
The CE OUT pin of MAX795TESA+T is characterized with a 50pF load capacitance during propagation delay testing. For guaranteed ≤7ns delay, minimize capacitive loading-ideally keep total CE OUT node capacitance below 30pF. Higher loads increase delay and may compromise timing margins in high-speed µP interfaces; use series termination or buffer drivers if >50pF is unavoidable.
MAX795TESA+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:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.075V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX795TESA+T FAQ
1.How can I place an order for MAX795TESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX795TESA+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 MAX795TESA+T reliable?
The price and inventory of MAX795TESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX795TESA+T is usually 5 days.
3.What payment methods are accepted for MAX795TESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX795TESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX795TESA+T?
MAX795TESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX795TESA+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 MAX795TESA+T?
For technical support, including MAX795TESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX795TESA+T requirements.
6.How does Aetrix verify that MAX795TESA+T is sourced from the original manufacturer or authorized distributors?
All MAX795TESA+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 MAX795TESA+T meets industry standards.
7.What is the process for return or replacement of MAX795TESA+T?
All MAX795TESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX795TESA+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 MAX795TESA+T part is unused and in its original packaging.
Return procedure for MAX795TESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX795TESA+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…
