My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6365PKA46-T
- Part No.:
- MAX6365PKA46-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6365PKA46-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,716
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6365PKA46-T from Maxim Integrated is a low-power microprocessor supervisory circuit with battery backup, chip-enable gating, and factory-preset 4.63V reset threshold. It provides active-low open-drain reset output, monitors VCC supply during power-up/down/brownout, controls VCC-to-battery switchover for CMOS RAM retention, and gates CE signals with 1.5ns propagation delay. Used in portable equipment requiring reliable power monitoring and data retention.
For engineers reviewing the MAX6365PKA46-T datasheet, MAX6365PKA46-T pinout, MAX6365PKA46-T application, or MAX6365PKA46-T equivalent, key selection criteria include its 4.63V reset threshold, 150ms minimum reset timeout, 10µA quiescent current, 8-pin SOT23 package, and manual reset input support - all critical for battery-backed µP systems with strict power integrity requirements.
Technical Context
The MAX6365PKA46-T implements a precision voltage monitor with ±1.5% threshold accuracy over temperature, integrated MOSFET-based VCC/BATT switchover logic with 40mV hysteresis, and debounced manual reset input (MR) with internal 20kΩ pullup. Its chip-enable gating uses a transmission gate architecture enabling CE IN-to-CE OUT conduction only when reset is deasserted.
Reset assertion is triggered by VCC falling below 4.63V, MR pulled low, or external fault conditions - and remains asserted for ≥150ms after recovery. The device guarantees RESET validity down to 1.2V on either VCC or VBATT, supporting ultra-low-voltage operation in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory preset, ±1.5% over -40°C to +85°C) - ensures reliable detection of +5V supply brownout before system instability. |
| Reset Timeout Period | 150ms min - guarantees µP initialization completes before release from reset. |
| Supply Current | 10µA typical at VCC = 5.5V - enables multi-year battery life in always-on backup mode. |
| VCC Operating Range | 1.2V to 5.5V - supports direct interface with Li-ion, coin-cell, and regulated logic supplies. |
| Output Type | Open-drain active-low RESET - allows wired-OR configuration and flexible pullup voltage selection. |
| Battery Switchover | VCC-to-BATT transition at VCC < VBATT − 20mV - prevents oscillation during slow supply decay. |
| CE Propagation Delay | 1.5ns - preserves timing integrity for high-speed µP address/data bus gating. |
Pinout & Package
Package: 8-pin SOT23 (2.9mm × 1.6mm × 1.1mm), surface-mount, lead(Pb)-free compatible (T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, MR low, or fault; requires external pullup; valid down to 1.2V. |
| 2 CE IN | Chip-enable input | Drives CE OUT only when reset is deasserted; connect to GND or OUT if unused. |
| 3 GND | Ground reference | Common return for VCC, BATT, and signal paths; must be low-impedance. |
| 4 MR | Manual reset input | Logic-low assertion triggers reset; internal 20kΩ pullup to VCC; debounced, no external RC needed. |
| 5 VCC | Main supply input | 1.2V–5.5V operating range; powers internal circuitry and sources OUT during normal operation. |
| 6 OUT | Power output | Sources from VCC (up to 150mA) or BATT (in backup mode); connects to SRAM VDD. |
| 7 BATT | Backup battery input | Accepts 2.0V–5.5V; automatically engages when VCC falls below reset threshold and VBATT > VCC + 20mV. |
| 8 CE OUT | Chip-enable output | Gated version of CE IN; goes low only when CE IN is low AND reset is not asserted; actively pulled up to OUT. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 4.63V reset threshold | Eliminates external resistor network while maintaining ±1.5% accuracy across industrial temperature range. |
| On-board CE signal gating | Prevents erroneous writes to CMOS RAM during power failure via sub-2ns transmission gate path. |
| Debounced manual reset input | Internal filtering removes switch bounce; supports direct connection of momentary pushbutton to GND. |
| VCC-to-BATT switchover with hysteresis | 40mV hysteresis prevents chattering during slow VCC decay near switchover point. |
| 1.2V guaranteed operation | Enables use with single-cell LiFePO₄ or depleted alkaline batteries without external LDO. |
Applications
| Portable Medical Monitor | Industrial PLC I/O Module |
|---|---|
Use Scenario: Battery-powered ECG recorder retaining real-time waveform data during AC power loss. IC Role / Device Role / Timing Role: Supervisory IC providing VCC brownout detection, automatic BATT switchover to SRAM, and CE gating to freeze memory access. Use Value: Guarantees zero-data-loss memory retention for ≥72 hours on coin cell, enabled by 3µA battery-backup current and 4.63V precise reset threshold. | Use Scenario: DIN-rail mounted controller maintaining I/O state and configuration registers during factory line voltage sags. IC Role / Device Role / Timing Role: Power supervisor asserting reset and disabling CE to prevent corrupted register writes during 100ms brownout events. Use Value: 150ms reset timeout and 1.5ns CE propagation delay ensure deterministic µP restart and memory protection within PLC scan cycle constraints. |
| Retail POS Terminal | Smart Energy Meter |
Use Scenario: Credit card terminal preserving transaction logs and encryption keys during battery replacement. IC Role / Device Role / Timing Role: Manual reset initiator (via MR) and battery switchover manager ensuring uninterrupted SRAM power during hot-swap. Use Value: Internal MR pullup and 20mV switchover hysteresis eliminate need for external debounce or sequencing logic. | Use Scenario: Utility meter logging kWh data through grid outages using supercapacitor backup. IC Role / Device Role / Timing Role: Precision voltage monitor detecting 5V rail collapse and enabling seamless transition to capacitor-backed VDD. Use Value: 4.63V threshold aligns with EN 50160 voltage dip limits; 10µA ICC extends supercap lifetime by >3× vs. legacy supervisors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6365LKA46-T | Same 4.63V threshold and SOT23-8 package, but push-pull RESET output instead of open-drain. | Requires no external pullup; unsuitable for wired-OR reset buses or mixed-voltage systems. | Select when driving single-load reset inputs directly and board space permits larger top-mark footprint (AAAH vs AAAN). |
| TPS3808G33DBVR | 3.3V fixed threshold, 350ms reset timeout, 2.9µA IQ, SOT23-6 package - no battery switchover or CE gating. | Lacks BATT/OUT switching and chip-enable control; limited to basic reset-only functions. | Choose only for cost-sensitive, non-backup applications where 3.3V monitoring suffices and CE gating is unnecessary. |
Compared with MAX6365LKA46-T, the MAX6365PKA46-T offers flexible open-drain reset signaling at the cost of an external pullup; versus TPS3808G33DBVR, it delivers full battery backup and memory write protection - making it uniquely suited for data-critical portable systems.
Availability
MAX6365PKA46-T is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, retail POS terminals, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6365PKA46-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 connectivity applications in industrial, automotive, and computing markets.
The MAX6365–MAX6368 family was engineered specifically for µP systems needing integrated power supervision, battery backup, and memory write protection - targeting portable, battery-critical, and high-reliability embedded applications.
FAQ
What is the exact reset threshold voltage of the MAX6365PKA46-T?
The MAX6365PKA46-T has a factory-preset reset threshold of 4.63V, with guaranteed tolerance of ±1.5% over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and does not require external components. The "46" suffix in the part number explicitly denotes the 4.63V threshold variant per Maxim's Reset Threshold Ranges table.
Does the MAX6365PKA46-T support battery backup functionality, and how does it switch between VCC and BATT?
Yes, the MAX6365PKA46-T fully supports battery backup. It switches from VCC to BATT when two conditions are met: VCC falls below the 4.63V reset threshold, and VCC is at least 20mV lower than VBATT. A 40mV hysteresis prevents oscillation during slow VCC decay. In backup mode, OUT is sourced from BATT, powering connected SRAM with <3µA quiescent current from the battery.
What is the function of the MR pin on the MAX6365PKA46-T, and does it require external components?
The MR (Manual Reset) pin on the MAX6365PKA46-T is a debounced, active-low input that asserts reset when pulled low. It features an internal 20kΩ pullup resistor to VCC, eliminating the need for external pullups. A momentary switch from MR to GND provides full manual reset capability; no RC filter or external debounce circuitry is required, though a 0.1µF capacitor to GND is recommended in noisy environments.
Can the MAX6365PKA46-T be used without a backup battery, and how should BATT and OUT be connected?
Yes, the MAX6365PKA46-T operates without a backup battery. In this configuration, connect BATT to GND and tie OUT directly to VCC. The internal switchover MOSFET remains inactive, and OUT functions as a buffered VCC rail. All supervisory functions - including reset generation, MR input handling, and CE gating - remain fully operational, making the device suitable for cost-sensitive applications where battery backup is optional.
What is the purpose of CE IN and CE OUT on the MAX6365PKA46-T, and what is their timing behavior?
CE IN and CE OUT implement chip-enable signal gating to prevent memory corruption during power faults. CE OUT follows CE IN only when reset is deasserted; during reset, CE OUT is forced low for 12µs (typical) if CE IN was low, then actively pulled high to OUT. Propagation delay is 1.5ns under 50Ω source and 50pF load, enabling use with high-speed µPs and DSPs without timing violations.
MAX6365PKA46-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain or Open Collector
- 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
MAX6365PKA46-T FAQ
1.How can I place an order for MAX6365PKA46-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6365PKA46-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 MAX6365PKA46-T reliable?
The price and inventory of MAX6365PKA46-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6365PKA46-T is usually 5 days.
3.What payment methods are accepted for MAX6365PKA46-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6365PKA46-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6365PKA46-T?
MAX6365PKA46-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6365PKA46-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 MAX6365PKA46-T?
For technical support, including MAX6365PKA46-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6365PKA46-T requirements.
6.How does Aetrix verify that MAX6365PKA46-T is sourced from the original manufacturer or authorized distributors?
All MAX6365PKA46-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 MAX6365PKA46-T meets industry standards.
7.What is the process for return or replacement of MAX6365PKA46-T?
All MAX6365PKA46-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6365PKA46-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 MAX6365PKA46-T part is unused and in its original packaging.
Return procedure for MAX6365PKA46-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6365PKA46-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…
