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Analog Devices Inc./Maxim Integrated MAX6832IXRD2
- Part No.:
- MAX6832IXRD2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6832IXRD2.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,260
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Product details
Overview
MAX6832IXRD2 from Maxim Integrated is a low-voltage microprocessor supervisory circuit in SC70-3 package, designed to monitor +1.2V to +1.8V power supplies and assert an active-low push-pull reset signal when VCC drops below 1.388V (I-suffix threshold) with a 30ms timeout period (D2 suffix). It features ±2.5% reset threshold accuracy over temperature, 7.5µA typical supply current, and guaranteed reset validity down to VCC = 0.55V - used for reliable power-on reset and brownout protection in portable µP systems.
For engineers reviewing the MAX6832IXRD2 datasheet, MAX6832IXRD2 pinout, MAX6832IXRD2 application, or MAX6832IXRD2 equivalent, this device serves as a space-saving, ultra-low-power voltage detector for critical reset supervision in battery-powered embedded controllers, low-voltage DC/DC converter monitoring, and intelligent instrumentation where stable threshold accuracy and minimal quiescent current are essential.
Technical Context
The MAX6832IXRD2 implements a precision bandgap-based voltage comparator with internal hysteresis (0.75% of VTH) to reject fast VCC transients, ensuring immunity to sub-100ns negative glitches. Its reset logic asserts RESET low on VCC fall below 1.388V and holds it active for exactly 30ms after VCC rises above threshold or manual reset deassertion.
This variant belongs to the MAX6832–MAX6837 group with fixed threshold and MR input; it uses a 3-pin SC70 package with GND, RESET (push-pull active-low), and VCC pins - no MR pin present, distinguishing it from 4-pin variants like MAX6835/MAX6836. The reset output sinks ≥15µA at VCC ≥ 0.55V and maintains valid logic levels down to 0.55V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.388V ±2.5% - factory-trimmed for 1.4V nominal supply; ensures deterministic reset at defined brownout level |
| Reset Timeout Period | 30ms - guarantees µP reset hold time sufficient for full power stabilization and oscillator startup |
| Supply Current | 7.5µA typ at 1.2V - enables multi-year operation in coin-cell–powered devices without compromising supervision integrity |
| Operating Voltage Range | +0.55V to +3.6V - supports valid reset assertion even during deep brownout, down to sub-1V supply collapse |
| Reset Output Type | Push-pull active-low - eliminates external pullup; drives CMOS inputs directly with rail-to-rail logic swing |
| Temperature Range | -40°C to +85°C - qualified for industrial-grade embedded control and portable equipment environments |
| Package | SC70-3 - 1.25mm × 0.85mm footprint; compatible with high-density PCB layouts and reflow assembly |
Pinout & Package
MAX6832IXRD2 is housed in a 3-pin SC70-3 package (1.25mm × 0.85mm, 0.65mm pitch), with exposed pad not electrically connected. Pin 1 = GND, Pin 2 = RESET (active-low push-pull output), Pin 3 = VCC. No manual reset (MR) or RESET-IN pin - functionally distinct from 4-pin variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for internal comparator and output stage; must be low-impedance connection to system ground plane |
| RESET | Active-low push-pull reset output | Drives µP reset pin directly; sinks ≥15µA at VCC ≥ 0.55V; remains valid down to 0.55V supply |
| VCC | Supply and monitored voltage input | Both powers the IC and serves as monitored rail; threshold detection occurs internally relative to this pin |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.388V reset threshold | Eliminates external resistor networks and calibration; reduces BOM count and layout area in 1.4V-core systems |
| ±2.5% threshold accuracy over temperature | Ensures consistent brownout detection across -40°C to +85°C without derating or guard-banding |
| 30ms fixed reset timeout | Matches typical µP oscillator stabilization and firmware initialization timing; avoids premature release |
| 7.5µA supply current | Enables always-on supervision in energy-harvesting and long-life battery applications without measurable drain |
| Immunity to short VCC transients | Rejects <100ns negative glitches - prevents spurious resets in noisy DC/DC converter environments |
Applications
| Portable Medical Sensors | Low-Voltage DC/DC Converter Monitoring |
|---|---|
|
Use Scenario: Wearable ECG sensor powered by single Li-ion cell (2.8V–4.2V) with 1.4V LDO supplying µC and analog front-end. IC Role / Device Role / Timing Role: Supervises 1.4V LDO output; asserts reset if LDO drops below 1.388V during battery sag or load transient. Use Value: Prevents corrupted ADC sampling or flash write during undervoltage - preserves data integrity without software intervention. |
Use Scenario: Point-of-load buck converter delivering 1.4V to FPGA core, operating from 5V input with dynamic load steps. IC Role / Device Role / Timing Role: Monitors buck output rail; generates 30ms reset pulse on output droop to halt FPGA configuration until stable. Use Value: Eliminates need for RC-based reset timers; provides precise, temperature-stable assertion timing independent of component aging. |
| Industrial Controller HMI Panels | Battery-Powered IoT Edge Nodes |
|
Use Scenario: ARM Cortex-M4-based HMI panel using 1.35V core supply derived from isolated 3.3V rail in factory automation setting. IC Role / Device Role / Timing Role: Resets microcontroller on 1.35V rail brownout caused by EMI-induced LDO dropout or cable voltage drop. Use Value: Guarantees deterministic recovery from intermittent supply faults - avoids hung UI state or watchdog timeouts. |
Use Scenario: LoRaWAN node powered by CR2032 coin cell, with 1.4V regulator feeding ultra-low-power MCU and sensor interface. IC Role / Device Role / Timing Role: Provides fail-safe reset during battery end-of-life voltage decay below 1.388V. Use Value: Enables graceful shutdown and nonvolatile status logging before complete power loss - extends usable battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809LXRD2 | 1.388V threshold, 30ms timeout, SC70-3, but higher 12µA supply current and ±3% threshold accuracy | Lacks transient immunity specification; less suitable for noisy switcher environments | Select MAX809LXRD2 only if legacy qualification or second-source requirement exists; MAX6832IXRD2 offers lower power and tighter tolerance |
| TPS3123E13DBVR | 1.33V threshold, 200ms timeout, SOT-23-3, 3.5µA supply current, but no guaranteed reset validity below 1.0V | Designed for higher-voltage systems; invalid reset behavior below 1.0V limits use in deep-brownout scenarios | Choose TPS3123E13DBVR only for cost-sensitive, non-critical applications where 200ms timeout and 1.0V minimum VCC are acceptable |
Compared with MAX809LXRD2 and TPS3123E13DBVR, MAX6832IXRD2 delivers superior threshold stability (±2.5% vs ±3%), lower quiescent current (7.5µA vs 12µA/3.5µA), and guaranteed reset functionality down to 0.55V - making it the optimal choice for robust, low-voltage µP supervision where reliability under marginal supply conditions is mandatory.
Availability
MAX6832IXRD2 is available at Aetrix Electronics and suitable for portable medical sensors, low-voltage DC/DC converter monitoring, and battery-powered IoT edge nodes requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX6832IXRD2 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 interface applications in industrial, automotive, and computing markets.
The MAX6832–MAX6840 family was developed specifically for ultra-low-voltage microprocessor supervision in space-constrained, battery-operated systems - emphasizing sub-1µA quiescent current, SC70 packaging, and factory-trimmed thresholds for 1.2V–1.8V rails.
FAQ
What is the exact reset threshold voltage of MAX6832IXRD2 and how is it specified?
The MAX6832IXRD2 has a factory-set reset threshold of 1.388V, with ±2.5% accuracy over the full -40°C to +85°C temperature range. This value corresponds to the "I" suffix in the part number and is trimmed during production to match 1.4V nominal supply systems. The threshold is referenced directly to the VCC pin and remains stable across voltage and temperature - no external components or adjustments are required for accurate brownout detection in the MAX6832IXRD2.
Does MAX6832IXRD2 include a manual reset (MR) input?
No, MAX6832IXRD2 does not include a manual reset (MR) input. It is a 3-pin SC70-3 device with only GND, RESET, and VCC terminals. Manual reset capability is present only in 4-pin variants such as MAX6835/MAX6836/MAX6837. The MAX6832IXRD2 relies solely on VCC monitoring for reset assertion - making it ideal for simplified, cost-optimized designs where external reset initiation is unnecessary.
What is the reset timeout period for MAX6832IXRD2 and how is it selected?
The MAX6832IXRD2 has a fixed 30ms reset timeout period, indicated by the "D2" suffix in the part number. This duration is internally programmed and unchangeable - it defines the minimum time RESET remains asserted after VCC recovers above 1.388V. The 30ms interval is optimized to exceed typical µP oscillator startup and firmware initialization times, ensuring reliable system reset without requiring external timing components in the MAX6832IXRD2.
Can MAX6832IXRD2 operate with supply voltages below 1.2V?
Yes, MAX6832IXRD2 is fully specified to operate with VCC as low as 0.55V, and its reset output remains valid down to that level. While the 1.388V threshold applies only when VCC ≥ 1.1V (per datasheet conditions), the device continues asserting RESET during deep brownout and guarantees functional reset behavior - including push-pull drive strength - down to 0.55V. This makes MAX6832IXRD2 suitable for applications experiencing severe supply collapse, unlike many supervisors that cease operation near 1.0V.
Is MAX6832IXRD2 pin-compatible with other MAX6832-series variants?
No, MAX6832IXRD2 is not pin-compatible with 4-pin MAX6835/MAX6836/MAX6837 variants due to differing pin counts and functions. However, it is pin-compatible with other 3-pin SC70-3 members of the MAX6832–MAX6834 family (e.g., MAX6832VXRD2, MAX6834HXRD2) sharing identical GND–RESET–VCC pinout. Board-level substitution among 3-pin variants is possible if threshold and timeout match design requirements - but migration from 3-pin to 4-pin requires PCB revision for the MAX6832IXRD2.
MAX6832IXRD2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.388V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6832IXRD2 FAQ
1.How can I place an order for MAX6832IXRD2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6832IXRD2 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 MAX6832IXRD2 reliable?
The price and inventory of MAX6832IXRD2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6832IXRD2 is usually 5 days.
3.What payment methods are accepted for MAX6832IXRD2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6832IXRD2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6832IXRD2?
MAX6832IXRD2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6832IXRD2 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 MAX6832IXRD2?
For technical support, including MAX6832IXRD2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6832IXRD2 requirements.
6.How does Aetrix verify that MAX6832IXRD2 is sourced from the original manufacturer or authorized distributors?
All MAX6832IXRD2 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 MAX6832IXRD2 meets industry standards.
7.What is the process for return or replacement of MAX6832IXRD2?
All MAX6832IXRD2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6832IXRD2, 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 MAX6832IXRD2 part is unused and in its original packaging.
Return procedure for MAX6832IXRD2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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