My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6326XR25-T
- Part No.:
- MAX6326XR25-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6326XR25-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,073
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6326XR25-T from Maxim Integrated is an ultra-low-power, active-low push-pull microprocessor supervisory circuit designed to monitor 2.5V power supplies and assert a reset signal during brownout or power-up conditions. It features a factory-trimmed 2.500V reset threshold (±1.5% at +25°C), 100ms minimum reset timeout, 1µA max supply current, and operates from VCC = 1.2V to 5.5V over –40°C to +85°C. Used in portable battery-powered systems requiring reliable power-on reset.
For engineers reviewing the MAX6326XR25-T datasheet, MAX6326XR25-T pinout, MAX6326XR25-T application, or MAX6326XR25-T equivalent, key selection criteria include reset threshold accuracy, push-pull output drive capability, SC70-3 package footprint compatibility, and guaranteed operation down to 1.2V VCC for low-voltage system monitoring.
Technical Context
The MAX6326XR25-T implements a precision bandgap-based voltage comparator with hysteresis (6.3mV) to detect VCC falling below 2.500V, triggering an active-low RESET output. Its internal timing circuit ensures a minimum 100ms reset assertion after VCC recovers above threshold, independent of supply ramp rate.
Designed for immunity to fast transients, it suppresses false resets from negative-going VCC glitches up to 200µs (at 200mV overdrive), and guarantees correct logic state down to 1.2V VCC - enabling use in deep-sleep or ultra-low-power microcontroller systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.500V ±1.5% at +25°C; ensures accurate 2.5V supply monitoring with minimal undervoltage risk |
| Supply Current | 1.0µA max at 3V; enables multi-year battery life in always-on monitoring applications |
| Reset Timeout | 100ms min power-up delay; guarantees µP initialization completes before release |
| VCC Operating Range | 1.2V to 5.5V; supports operation during brownout and low-VCC sleep modes |
| Output Type | Active-low push-pull; drives RESET line directly without external pull-up resistor |
| Temperature Range | –40°C to +85°C; qualified for industrial and embedded environmental conditions |
| Reset Hysteresis | 6.3mV; prevents oscillation near threshold during slow VCC recovery |
Pinout & Package
MAX6326XR25-T is housed in a 3-pin SC70-3 package (outline X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads and RoHS-compliant lead-free finish (–T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Active-low push-pull output; sinks ≥1.6mA when asserted, sources no current; directly interfaces µP reset input |
| 3 | VCC | Power supply input; powers internal circuitry and defines reset threshold reference; accepts 1.2V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1µA max enables integration into energy-harvesting and coin-cell-powered devices |
| Precision reset threshold | 2.500V ±1.5% at +25°C ensures deterministic reset behavior across production lots |
| Guaranteed 1.2V operation | Validates correct reset state even during deep brownout or partial power loss |
| Transient immunity | Rejects VCC glitches ≤200µs (at 200mV overdrive), eliminating spurious resets in noisy environments |
| No external components | Self-contained supervision eliminates BOM cost and layout area for RC networks or comparators |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered wearable ECG sensor operating from a single 2.5V Li-ion cell with sleep mode between measurements. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low RESET to hold MCU in reset until stable 2.5V rail is confirmed post-wakeup. Use Value: 1µA max ICC extends battery life beyond 5 years; 2.500V threshold matches nominal supply, minimizing false triggers during shallow discharge. | Use Scenario: DIN-rail mounted analog input module powered by isolated 2.5V DC-DC converter in harsh factory environment. IC Role / Device Role / Timing Role: Power-on supervisor ensuring FPGA and ADC initialize only after clean 2.5V rail establishment. Use Value: 100ms min timeout prevents premature release during converter startup overshoot; –40°C to +85°C rating ensures reliability in uncontrolled enclosures. |
| Smart Meter Communication Units | Low-Power IoT Edge Nodes |
Use Scenario: NB-IoT modem subsystem powered by regulated 2.5V rail, requiring fail-safe boot sequence after power interruption. IC Role / Device Role / Timing Role: Brownout detector asserting RESET whenever VCC drops below 2.5V, holding µC in reset until full recovery. Use Value: 6.3mV hysteresis prevents chatter during marginal VCC conditions; push-pull output drives modem reset pin without external pull-up. | Use Scenario: Sub-GHz sensor node using ultra-low-power MCU, powered intermittently by energy harvesting circuitry. IC Role / Device Role / Timing Role: System-level reset controller guaranteeing controlled wake-up only when 2.5V rail is valid and stable. Use Value: Operation down to 1.2V VCC allows supervision during initial charge phase of supercapacitor storage; SC70-3 footprint saves PCB area in compact designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR25-T | SOT23-3 package (3.0mm × 1.4mm); identical electrical specs and reset threshold | Requires different land pattern; better thermal dissipation (320mW vs. 174mW) | Select for higher power handling or legacy SOT23 footprint compatibility |
| MAX809TR25-T | Same 2.5V threshold but 1.6µA max ICC; push-pull active-low output; ±2% threshold tolerance | Higher supply current reduces battery life; looser threshold spec increases undervoltage margin risk | Select only if SOT23-3 footprint and lower cost outweigh precision and ultra-low power needs |
Compared with MAX6326XR25-T, the MAX6326UR25-T offers identical functionality in a larger SOT23-3 package with higher power dissipation headroom, while the MAX809TR25-T trades precision and ultra-low ICC for broader availability and lower unit cost - making the MAX6326XR25-T optimal for space-constrained, long-life 2.5V systems demanding tight threshold control.
Availability
MAX6326XR25-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart meter communication units requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6326XR25-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6326 family belongs to Maxim's ultra-low-power µP supervisory product line, engineered specifically for reliable, zero-component reset generation in battery-critical and space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6326XR25-T and how tightly is it specified?
The MAX6326XR25-T has a factory-trimmed nominal reset threshold of 2.500V, specified as ±1.5% at +25°C and ±2.5% over the full –40°C to +85°C temperature range. This precision ensures deterministic reset behavior in 2.5V systems without calibration or external adjustment, and is confirmed in Table 1 of the official datasheet.
Does MAX6326XR25-T require any external components to function?
No, the MAX6326XR25-T requires no external components. It integrates the voltage reference, comparator, timing circuit, and push-pull output driver in a single SC70-3 package. The device asserts RESET based solely on VCC level and internal timing - eliminating RC networks, pull-up resistors, or trimming potentiometers required by discrete solutions.
What is the minimum VCC voltage at which MAX6326XR25-T guarantees correct reset state?
The MAX6326XR25-T guarantees correct reset assertion and deassertion behavior down to VCC = 1.2V over the full –40°C to +85°C temperature range. This enables reliable operation during deep brownout conditions and supports use with ultra-low-voltage microcontrollers that remain functional below 1.8V.
How does the MAX6326XR25-T handle fast transients on the VCC supply line?
The MAX6326XR25-T incorporates transient immunity circuitry that ignores negative-going VCC glitches up to 200µs in duration when the overdrive (VTH – VCC) is 200mV. This prevents spurious resets caused by switching noise or coupling events, as validated in the "Maximum Transient Duration vs. Reset Threshold Overdrive" graph (Figure 4) of the datasheet.
Is MAX6326XR25-T pin-compatible with other members of the MAX6326 family or legacy supervisors?
Yes, MAX6326XR25-T is pin-compatible with all SC70-3 variants in the MAX6326/MAX6327/MAX6328 series (e.g., MAX6326XR26-T, MAX6327XR25-T), and also with the MAX803/MAX809/MAX810 families in SC70-3 or SOT23-3 packages. Pin 1 = GND, Pin 2 = RESET, Pin 3 = VCC - consistent across all these supervisory ICs.
MAX6326XR25-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.5V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6326XR25-T FAQ
1.How can I place an order for MAX6326XR25-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6326XR25-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 MAX6326XR25-T reliable?
The price and inventory of MAX6326XR25-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6326XR25-T is usually 5 days.
3.What payment methods are accepted for MAX6326XR25-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6326XR25-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6326XR25-T?
MAX6326XR25-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6326XR25-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 MAX6326XR25-T?
For technical support, including MAX6326XR25-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6326XR25-T requirements.
6.How does Aetrix verify that MAX6326XR25-T is sourced from the original manufacturer or authorized distributors?
All MAX6326XR25-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 MAX6326XR25-T meets industry standards.
7.What is the process for return or replacement of MAX6326XR25-T?
All MAX6326XR25-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6326XR25-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 MAX6326XR25-T part is unused and in its original packaging.
Return procedure for MAX6326XR25-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6326XR25-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…
