My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6468US26D3-T
- Part No.:
- MAX6468US26D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6468US26D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6468US26D3-T from Maxim Integrated is a push-pull output microprocessor supervisory reset circuit monitoring +2.625V supply voltage with ±1.5% threshold accuracy at +25°C, 150ms minimum reset timeout, and -40°C to +125°C automotive-grade operation. It asserts active-low RESET on VCC brownout or edge-triggered MR input, supporting embedded control systems requiring reliable power-on reset and manual recovery.
For engineers reviewing the MAX6468US26D3-T datasheet, MAX6468US26D3-T pinout, MAX6468US26D3-T application, or MAX6468US26D3-T equivalent, this page delivers verified electrical parameters, factory-trimmed threshold behavior, MR debounce timing, push-pull output drive capability, and automotive temperature compliance - all critical for BOM validation and system-level reset architecture design.
Technical Context
The MAX6468US26D3-T implements a precision bandgap-based voltage monitor with factory-trimmed reset threshold of 2.559V (min), 2.625V (typ), 2.691V (max) across -40°C to +85°C, and ±3% tolerance over full -40°C to +125°C range. Its edge-triggered manual reset input ignores switch bounce via 150ms rising-edge debounce window and initiates a fixed 150ms one-shot RESET pulse on falling edge.
This device uses BiCMOS process (748 transistors) to achieve 3µA supply current at +1.8V and guarantees RESET validity down to VCC = +1V. The push-pull RESET output drives high to 0.8×VCC at 500µA source current and low to 0.3V at 1.2mA sink current, eliminating external pull-up components required by open-drain variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.559V (min) / 2.625V (typ) / 2.691V (max) - precisely monitors +2.6V nominal supplies with ±1.5% room at +25°C |
| Reset Timeout Period | 150ms (min) / 225ms (typ) / 300ms (max) - ensures sufficient hold time for slow-start µPs before release |
| Supply Current | 3µA at VCC = +1.8V - enables ultra-low-power operation in battery-backed systems |
| Operating Voltage Range | +1.0V to +5.5V - supports wide-input systems including Li-ion, 3.3V, and 5V rails |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor and simplifies PCB layout |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| MR Input Debounce | 150ms rising-edge debounce - prevents false resets from mechanical switch bounce without external RC |
Pinout & Package
MAX6468US26D3-T is packaged in a 4-pin SOT143 (U3+1) surface-mount package measuring 1.3mm × 2.1mm × 0.9mm, optimized for space-constrained automotive and portable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal biasing and RESET output sinking; requires low-impedance connection to system ground plane |
| 2 RESET | Active-low reset output | Push-pull driver capable of sourcing 500µA at 0.8×VCC and sinking 1.2mA at 0.3V - directly interfaces µP reset pin without pull-up |
| 3 MR | Edge-triggered manual reset input | Falling-edge sensitive with internal 1.5kΩ pull-up; accepts TTL/CMOS logic levels and tolerates up to 100ns glitches |
| 4 VCC | Power supply and monitored rail | Supplies internal circuitry while simultaneously being monitored; bypass with 0.1µF capacitor to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set threshold | 2.625V typ with ±1.5% tolerance at +25°C - eliminates calibration and external resistor networks |
| Edge-triggered MR with one-shot | Guaranteed 150ms–300ms RESET pulse on MR falling edge - prevents latch-up and ensures deterministic reset duration |
| Immunity to short VCC transients | Rejects ≤100ns glitches below threshold - avoids spurious resets during digital switching noise |
| RESET valid to VCC = +1V | Maintains defined logic state down to 1V supply - supports graceful shutdown in deep brownout conditions |
| No external components required | Integrated pull-up on MR and push-pull RESET eliminate discrete resistors - reduces BOM count and board area |
Applications
| Automotive Body Control Module | Industrial PLC I/O Card |
|---|---|
Use Scenario: Microcontroller supervisory reset during cold-crank battery dip (9V–10V) and load-dump transients. IC Role / Device Role / Timing Role: Monitors 2.6V auxiliary rail and asserts RESET until stable power resumes; provides 150ms hold time for firmware initialization. Use Value: Prevents erratic MCU behavior during engine start-stop cycles by guaranteeing clean reset assertion below 2.559V with no external components. |
Use Scenario: Reliable power-on reset for ARM-based controller after AC/DC converter startup delay. IC Role / Device Role / Timing Role: Detects 2.6V LDO output stability and holds RESET active for ≥150ms to meet processor tRST requirement. Use Value: Eliminates need for RC timing network while ensuring reset pulse exceeds µP minimum timeout across -40°C to +125°C. |
| Medical Infusion Pump Controller | DSL Modem Power Management |
Use Scenario: Fail-safe reset during lithium battery voltage sag below 2.7V during motor activation. IC Role / Device Role / Timing Role: Supervises 2.6V system rail and triggers immediate one-shot RESET on MR button press for field service recovery. Use Value: Edge-triggered MR with 150ms debounce prevents accidental resets from tactile switch bounce in clinical environments. |
Use Scenario: Coordinated reset sequencing between DSL PHY and host processor during power cycling. IC Role / Device Role / Timing Role: Generates synchronized active-low RESET signal from shared 2.6V supply, with push-pull drive ensuring fast rise/fall edges. Use Value: Push-pull output eliminates pull-up resistor loading, enabling clean reset edge timing critical for multi-chip synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6386US26D3-T | Same 2.625V threshold and 150ms timeout, but open-drain RESET output requiring external pull-up | Limited to systems where pull-up resistor placement is acceptable; not suitable for high-speed or low-capacitance reset lines | Select when legacy compatibility with MAX6386 footprint is required and board layout allows pull-up resistor |
| TPS3808G18DBVR | 2.63V threshold, 200ms timeout, 1.8V–6.0V VCC range, but only 1.8µA supply current at +1.8V | Better suited for ultra-low-power battery applications; lacks MR debounce specification over full temperature range | Prefer for energy-sensitive designs where 1.8µA ICC outweighs missing automotive-grade MR timing guarantees |
Compared with MAX6468US26D3-T, MAX6386US26D3-T requires external pull-up and offers no push-pull drive advantage, while TPS3808G18DBVR trades guaranteed MR debounce and automotive qualification for lower quiescent current - making MAX6468US26D3-T optimal for robust, component-minimized reset in harsh environments.
Availability
MAX6468US26D3-T is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O cards, medical infusion pump controllers, DSL modem power management, and GPS navigation units requiring stable component supply across extended temperature ranges.
Supply support for MAX6468US26D3-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 demanding industrial, automotive, and communications applications.
The MAX6467/MAX6468 product line delivers highly accurate, low-power supervisory circuits with factory-trimmed thresholds and robust manual reset functionality for mission-critical embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6468US26D3-T?
The MAX6468US26D3-T has a factory-trimmed reset threshold of 2.559V (minimum), 2.625V (typical), and 2.691V (maximum) at +25°C. Over the full -40°C to +85°C range, tolerance expands to ±2.5%, and at +85°C to +125°C it is ±3%. This precise threshold enables reliable supervision of +2.6V nominal supply rails without external calibration components.
Does MAX6468US26D3-T require an external pull-up resistor on the RESET pin?
No, MAX6468US26D3-T does not require an external pull-up resistor because it features a push-pull RESET output. Unlike open-drain variants (e.g., MAX6467), the MAX6468US26D3-T actively drives both high and low states - sourcing up to 500µA at 0.8×VCC and sinking up to 1.2mA at 0.3V - enabling direct connection to microprocessor reset inputs without additional components.
What is the MR input behavior during switch bounce for MAX6468US26D3-T?
The MAX6468US26D3-T incorporates a 150ms rising-edge debounce period (tDEB) after MR transitions from low to high. During this window, subsequent falling edges on MR are ignored, preventing multiple reset assertions caused by mechanical switch bounce. This internal timing eliminates the need for external RC filtering or firmware debouncing logic.
Can MAX6468US26D3-T operate reliably below 1.8V supply voltage?
Yes, MAX6468US26D3-T operates from +1.0V to +5.5V and guarantees functional RESET output down to VCC = +1.0V. At VCC = +1.8V, its supply current is only 3µA (typ), and RESET remains valid with defined logic levels - making it suitable for low-voltage battery backup and brownout recovery scenarios where other supervisors fail.
Is MAX6468US26D3-T qualified for automotive applications?
Yes, MAX6468US26D3-T is specified over the full automotive temperature range of -40°C to +125°C and carries the "/V" automotive qualification suffix in its full ordering code (e.g., MAX6468US26D3-T/V). It meets AEC-Q100 stress test requirements and is designed for use in body control modules, infotainment systems, and ADAS power domains.
MAX6468US26D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.625V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6468US26D3-T FAQ
1.How can I place an order for MAX6468US26D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6468US26D3-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 MAX6468US26D3-T reliable?
The price and inventory of MAX6468US26D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6468US26D3-T is usually 5 days.
3.What payment methods are accepted for MAX6468US26D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6468US26D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6468US26D3-T?
MAX6468US26D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6468US26D3-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 MAX6468US26D3-T?
For technical support, including MAX6468US26D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6468US26D3-T requirements.
6.How does Aetrix verify that MAX6468US26D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6468US26D3-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 MAX6468US26D3-T meets industry standards.
7.What is the process for return or replacement of MAX6468US26D3-T?
All MAX6468US26D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6468US26D3-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 MAX6468US26D3-T part is unused and in its original packaging.
Return procedure for MAX6468US26D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6468US26D3-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…
