My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6365LKA23+T
- Part No.:
- MAX6365LKA23+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6365LKA23+T.pdf
- Description:
- IC SUPERVISOR MPU LP SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:9,857
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6365LKA23+T from Maxim Integrated is a low-power microprocessor supervisory circuit with battery backup, chip-enable gating, and debounced manual reset input. It monitors VCC supply voltage (1.2V to 5.5V), asserts active-low open-drain RESET when VCC falls below 2.32V, provides 150ms minimum reset timeout, and switches OUT between VCC and backup battery with <1µA standby current in battery mode - used in portable POS terminals and industrial controllers requiring reliable power-fail response.
For engineers reviewing the MAX6365LKA23+T datasheet, MAX6365LKA23+T pinout, MAX6365LKA23+T application, or MAX6365LKA23+T equivalent, key selection criteria include factory-set 2.32V reset threshold, SOT23-8 package compatibility, 10µA quiescent current, CE IN/CE OUT gating with 1.5ns propagation delay, and guaranteed RESET validity down to 1.2V supply.
Technical Context
This device integrates four core functions: precision VCC monitoring with ±1.5% threshold accuracy over temperature, automatic VCC-to-battery switchover with 40mV hysteresis, on-board chip-enable signal gating to protect CMOS RAM during brownout, and debounced manual reset input with internal 20kΩ pullup. The reset generator guarantees monotonic assertion for ≥150ms after VCC recovery.
The internal MOSFET switch delivers up to 150mA from VCC and supports battery-backup operation with VCC = 0V, while CE IN–CE OUT transmission gate operates with <100Ω on-resistance and 12µs hold time during reset assertion - enabling use with high-speed µPs and DSPs without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (factory preset, ±1.5% over -40°C to +85°C) - ensures reliable detection of 2.5V system brownout |
| Supply Voltage Range | 1.2V to 5.5V - supports operation directly from single-cell Li-ion or 3.3V/5V rails |
| Quiescent Current | 10µA (typ) at VCC = 5.5V - enables multi-year battery life in always-on backup mode |
| Reset Timeout Period | 150ms min - meets µP power-up initialization timing requirements per JEDEC JESD79 |
| CE Propagation Delay | 1.5ns (typ) - preserves timing integrity for SRAM access in >100MHz systems |
| Battery Standby Current | 3µA (max) at VBATT = 2.8V, VCC = 0V - minimizes battery drain during extended power loss |
| RESET Output Type | Open-drain active-low - allows wired-OR configuration and level translation across voltage domains |
Pinout & Package
MAX6365LKA23+T is housed in an 8-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained portable and industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, MR low, or reset timeout - requires external pullup for host µP interface |
| 2 CE IN | Chip-enable input | Controls gating path to CE OUT; tied to GND or OUT if unused - prevents spurious writes during power failure |
| 3 GND | Ground reference | Primary return path for VCC, BATT, and CE circuits - must be low-impedance connection to system ground plane |
| 4 MR | Manual reset input | Debounced logic input with 20kΩ internal pullup to VCC - momentary switch to GND initiates system reset without external RC |
| 5 VCC | Main supply input | 1.2V–5.5V operating rail; powers internal circuitry and sources OUT during normal operation |
| 6 OUT | Switched output | Sources from VCC normally, switches to BATT during brownout - delivers up to 150mA to SRAM or RTC |
| 7 BATT | Backup battery input | Accepts 2.0V–5.5V battery; activates switchover when VCC < VTH and VCC < VBATT − 20mV |
| 8 CE OUT | Chip-enable output | Gated CE signal passed only when CE IN is high and reset not asserted - blocks memory writes during fault conditions |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.32V ±1.5% over full temperature range - eliminates need for external resistor divider calibration |
| Integrated battery switchover | Automatic MOSFET switching with 40mV hysteresis - prevents oscillation during slow VCC decay |
| On-chip CE gating | 1.5ns propagation delay and <100Ω on-resistance - maintains memory timing margins in high-speed µP systems |
| Debounced manual reset | Internal 20kΩ pullup and noise-immune detection - removes requirement for external debounce capacitor or Schmitt trigger |
| Ultra-low backup current | 3µA max IBACK at VBATT = 2.8V - extends CR2032 battery life beyond 10 years in standby |
Applications
| POS Terminal Power Management | Industrial PLC Memory Protection |
|---|---|
Use Scenario: Battery-backed SRAM retention during AC mains interruption in retail point-of-sale terminals. IC Role / Device Role / Timing Role: Supervisory controller that monitors 3.3V main rail, switches SRAM supply to coin-cell battery, and gates CE to prevent write corruption. Use Value: Guarantees 150ms reset hold time and <1µA battery drain - enables seamless transaction recovery after 5-minute outage. | Use Scenario: Preserving real-time clock and configuration data during brownout in programmable logic controllers. IC Role / Device Role / Timing Role: Reset generator and battery switchover IC interfacing with ARM Cortex-M4 µP and 64KB SRAM. Use Value: 2.32V threshold matches 2.5V I/O domain; 1.5ns CE delay avoids setup/hold violations at 80MHz bus speed. |
| Portable Medical Monitor Backup | Set-Top Box Firmware Integrity |
Use Scenario: Maintaining ECG waveform buffer and calibration constants during lithium-polymer battery swap in handheld diagnostics. IC Role / Device Role / Timing Role: Dual-rail supervisor managing main 3.8V Li-Po and backup 3.0V coin cell, with manual reset for field service. Use Value: MR input with internal pullup enables one-button recalibration; 10µA ICC allows 2-week runtime on backup cell alone. | Use Scenario: Preventing flash corruption during unexpected power loss in cable set-top boxes with Linux-based firmware. IC Role / Device Role / Timing Role: Chip-enable gate and reset coordinator between SoC and SPI NOR flash memory. Use Value: CE OUT hold time of 12µs ensures completion of ongoing flash page write before reset assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6365PKA23+T | Same 2.32V threshold and SOT23-8 package, but push-pull active-low RESET output instead of open-drain | Requires no external pullup resistor; incompatible with wired-OR reset buses | Select when driving single µP reset pin directly and board layout prohibits pullup placement |
| TPS3808G125DBVR | 2.5V reset threshold, 350ms timeout, 1.8µA IQ, SOT23-6 package - lacks battery switchover and CE gating | Only provides basic reset supervision; cannot replace MAX6365LKA23+T in battery-backed memory systems | Choose only for cost-sensitive non-backup applications where CE protection and battery support are unnecessary |
Compared with MAX6365PKA23+T, the MAX6365LKA23+T offers flexible reset bus interfacing via open-drain output, while TPS3808G125DBVR reduces component count in simple reset-only designs but omits critical battery and memory protection features required by the original specification.
Availability
MAX6365LKA23+T is available at Aetrix Electronics and suitable for portable POS terminals, industrial PLCs, medical monitors, and set-top boxes requiring stable component supply with long-term lifecycle assurance.
Supply support for MAX6365LKA23+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 connectivity in demanding industrial and automotive environments.
The MAX6365–MAX6368 family targets space-constrained µP systems needing integrated power supervision, battery switchover, and memory write protection - eliminating discrete diodes, MOSFETs, and logic gates in compact portable and embedded designs.
FAQ
What is the factory-set reset threshold voltage for MAX6365LKA23+T?
The MAX6365LKA23+T has a factory-trimmed reset threshold of 2.32V (minimum 2.25V, maximum 2.38V) across the full operating temperature range of -40°C to +85°C. This value is laser-trimmed during production and does not require external resistor networks. The '23' suffix in MAX6365LKA23+T explicitly denotes this 2.32V threshold variant, confirmed in the Reset Threshold Ranges table and Device Marking Codes section of the official datasheet.
Does MAX6365LKA23+T support battery-backup operation with zero VCC?
Yes, MAX6365LKA23+T supports true battery-backup operation with VCC = 0V. When VCC drops below the 2.32V threshold and remains below VBATT − 20mV, the internal MOSFET connects BATT to OUT, supplying up to 150mA to attached SRAM or RTC. In this state, quiescent current drops to 3µA max (IBACK), and CE OUT remains functional to block memory writes - all verified in the Electrical Characteristics table under "Supply Current in Battery-Backup Mode".
What is the function of the MR pin on MAX6365LKA23+T?
The MR (Manual Reset) pin on MAX6365LKA23+T is a debounced, internally pulled-up (20kΩ to VCC) logic input that asserts RESET when driven low. Reset remains active for ≥150ms after MR returns high, satisfying µP power-up timing requirements. Unlike generic reset inputs, MR requires no external RC network or Schmitt trigger - its glitch immunity (100ns at 3.3V) and propagation delay (120ns) are fully characterized in the datasheet's Electrical Characteristics table.
Can MAX6365LKA23+T be used without a backup battery?
Yes, MAX6365LKA23+T operates without a backup battery. Per Applications Information section, connect BATT to GND and OUT to VCC to disable switchover functionality while retaining full reset supervision and CE gating. In this configuration, the device draws only 10µA quiescent current and continues to monitor VCC, assert RESET on undervoltage, and gate CE IN to CE OUT - making it suitable for cost-sensitive applications where battery backup is optional.
What package type and dimensions does MAX6365LKA23+T use?
MAX6365LKA23+T uses an 8-pin SOT23 package measuring 2.9mm × 1.6mm × 1.1mm (length × width × height), with standard lead pitch of 0.65mm. This footprint is identical across the MAX6365–MAX6368 family and compatible with automated pick-and-place equipment. The 'LKA' prefix in the part number specifically denotes the lead-free SOT23-8 variant, and the '+T' suffix confirms tape-and-reel packaging per Maxim's ordering conventions.
MAX6365LKA23+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6365LKA23+T FAQ
1.How can I place an order for MAX6365LKA23+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6365LKA23+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 MAX6365LKA23+T reliable?
The price and inventory of MAX6365LKA23+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6365LKA23+T is usually 5 days.
3.What payment methods are accepted for MAX6365LKA23+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6365LKA23+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6365LKA23+T?
MAX6365LKA23+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6365LKA23+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 MAX6365LKA23+T?
For technical support, including MAX6365LKA23+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6365LKA23+T requirements.
6.How does Aetrix verify that MAX6365LKA23+T is sourced from the original manufacturer or authorized distributors?
All MAX6365LKA23+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 MAX6365LKA23+T meets industry standards.
7.What is the process for return or replacement of MAX6365LKA23+T?
All MAX6365LKA23+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6365LKA23+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 MAX6365LKA23+T part is unused and in its original packaging.
Return procedure for MAX6365LKA23+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6365LKA23+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…
