My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6328XR31/GG8
- Part No.:
- MAX6328XR31/GG8
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6328XR31/GG8.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,986
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6328XR31/GG8 from Maxim Integrated is an ultra-low-power, open-drain, active-low microprocessor supervisory circuit in SC70-3 package. It monitors VCC supply voltage and asserts RESET when VCC falls below 3.08V (±2.5% over temperature), holding reset for ≥100ms after VCC recovers. Designed for portable/battery-powered systems, it draws ≤1µA at 3V and operates from 1.2V to 5.5V.
For engineers reviewing the MAX6328XR31/GG8 datasheet, MAX6328XR31/GG8 pinout, MAX6328XR31/GG8 application, or MAX6328XR31/GG8 equivalent, key selection considerations include its factory-trimmed 3.08V reset threshold, open-drain output compatible with bidirectional µP reset pins (e.g., Motorola 68HC11), immunity to fast VCC transients, and guaranteed operation down to 1V during power-down.
Technical Context
The MAX6328XR31/GG8 implements a precision bandgap-based reset comparator with 40ppm/°C tempco and 6.3mV hysteresis, ensuring stable threshold behavior across -40°C to +85°C. Its internal timing circuit guarantees a minimum 100ms reset timeout after power-up, independent of external components.
As an open-drain device, MAX6328XR31/GG8 requires an external pull-up resistor and supports wired-OR reset bus configurations. It interfaces directly with microcontrollers having bidirectional reset pins without level-shifting, leveraging its 0.3V max VOL at 1.6mA sink current and 0.1µA leakage when inactive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±2.5% over -40°C to +85°C - ensures reliable brownout detection for 3.3V systems |
| Supply Current | ≤1.0µA at 3V - enables multi-year battery life in portable equipment |
| Reset Timeout | 100ms to 280ms - meets JEDEC JESD85 power-on reset timing requirements |
| Output Type | Open-drain active-low - allows shared reset bus and compatibility with bidirectional µP reset pins |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep brownout and full-system power sequencing |
| Reset Hysteresis | 6.3mV - prevents chatter near threshold during slow VCC recovery |
| Transient Immunity | Rejects VCC glitches <20µs at 100mV overdrive - eliminates false resets from digital noise |
Pinout & Package
MAX6328XR31/GG8 is housed in a 3-pin SC70-3 package (outline X3-2, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output stage |
| 2 | RESET | Open-drain active-low output - requires external pull-up; sinks up to 1.6mA |
| 3 | VCC | Power supply input - monitored for reset assertion; operates down to 1.2V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1µA max enables >10-year coin-cell operation in always-on monitoring |
| Factory-trimmed VTH | 3.08V threshold set at wafer level - eliminates field calibration and external resistors |
| Open-drain architecture | Supports multi-source reset arbitration and I²C-style bus sharing without contention |
| Wide VCC range | 1.2V–5.5V operation allows use across 1.8V, 2.5V, 3.3V, and 5V domains in mixed-voltage systems |
| Guaranteed reset state | Valid reset output asserted for VCC ≥1V - ensures safe initialization during power ramp-down |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Wearable ECG monitor powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises 3.3V LDO output; asserts reset if battery sags below 3.08V during RF burst. Use Value: Prevents firmware corruption during low-battery brownout while consuming <1µA between measurements. |
Use Scenario: DIN-rail mounted I/O module with isolated 24V-to-3.3V DC-DC converter powering ARM Cortex-M4 MCU. IC Role / Device Role / Timing Role: Monitors post-regulator 3.3V rail; holds MCU in reset until rail stabilizes >100ms post-power-on. Use Value: Eliminates need for RC timing network, reducing BOM count and improving cold-start reliability in harsh environments. |
| Smart Meter Communication Units | Automotive Body Control Modules |
|
Use Scenario: NB-IoT modem subsystem in electricity meter, operating from supercapacitor backup during mains outage. IC Role / Device Role / Timing Role: Detects 3.3V rail collapse from capacitor discharge; triggers graceful shutdown sequence via open-drain RESET line. Use Value: Open-drain output enables shared reset signaling with host meter SoC, simplifying fault coordination. |
Use Scenario: Low-power door module with LIN transceiver and EEPROM, powered from vehicle battery (9V–16V) via 3.3V LDO. IC Role / Device Role / Timing Role: Monitors LDO output; asserts reset during cranking-induced dips below 3.08V to prevent EEPROM write corruption. Use Value: 40ppm/°C tempco ensures consistent trip point across -40°C to +85°C under hood conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR31/GG8 | Push-pull active-low RESET output; VOH = 0.8·VCC, VOL = 0.3V | Requires no external pull-up; not suitable for wired-OR buses | Select when driving single-load reset inputs without bus sharing |
| MAX809TR31D3T | Same 3.08V threshold, SOT23-3, but higher 2.5µA ICC and no 1V operation guarantee | Limited to higher-power applications where sub-µA sleep current is not critical | Choose only if legacy footprint compatibility with MAX809 family is required |
Compared with MAX6326XR31/GG8, MAX6328XR31/GG8's open-drain output enables multi-device reset coordination, while versus MAX809TR31D3T, it delivers 2.5× lower supply current and guaranteed functionality down to 1V-critical for battery-backed systems undergoing deep brownout.
Availability
MAX6328XR31/GG8 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart meter communication units, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for MAX6328XR31/GG8 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, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX6326/MAX6327/MAX6328 series was developed specifically to replace discrete RC reset circuits in space-constrained, battery-sensitive µP systems-delivering factory-trimmed accuracy, ultra-low ICC, and robust transient immunity in 3-pin SC70/SOT23 packages.
FAQ
What is the exact reset threshold voltage of MAX6328XR31/GG8 and how tightly is it specified?
The MAX6328XR31/GG8 has a factory-trimmed nominal reset threshold of 3.08V, with a tolerance of ±1.5% at +25°C and ±2.5% over the full -40°C to +85°C operating range. This specification is guaranteed by production test, not just design simulation, and applies directly to the MAX6328XR31/GG8 device without derating or external calibration.
Does MAX6328XR31/GG8 require an external pull-up resistor on the RESET pin?
Yes, MAX6328XR31/GG8 features an open-drain RESET output and requires an external pull-up resistor to the appropriate logic rail (e.g., 3.3V). Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements. The device itself does not integrate this resistor, enabling flexible voltage-level translation and wired-OR reset bus topologies.
Can MAX6328XR31/GG8 operate reliably when VCC drops below 2.0V?
Yes, MAX6328XR31/GG8 is fully functional down to VCC = 1.2V over temperature and guaranteed to maintain correct reset state (asserted or de-asserted) for VCC ≥1.0V. This allows safe operation during deep brownout conditions and ensures the reset signal remains valid even as the system supply collapses-critical for preventing EEPROM corruption or MCU lockup.
How does MAX6328XR31/GG8 handle short-duration voltage transients on the VCC line?
MAX6328XR31/GG8 incorporates internal filtering that rejects negative-going VCC transients shorter than ~20µs when the overdrive (VTH – VCC) is 100mV. Its reset comparator is designed to ignore fast glitches, preventing spurious resets caused by digital switching noise or coupling-verified by the "Maximum Transient Duration vs. Reset Threshold Overdrive" curve in the datasheet.
Is MAX6328XR31/GG8 pin-compatible with other members of the MAX632x family?
Yes, MAX6328XR31/GG8 shares identical SC70-3 pinout (GND, RESET, VCC) and footprint with all MAX6326/MAX6327/MAX6328 variants. However, output type differs: MAX6328XR31/GG8 is open-drain, whereas MAX6326XR31/GG8 is push-pull. Swapping requires verifying external circuit compatibility-especially pull-up presence and load drive requirements-before substitution.
MAX6328XR31/GG8 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:
- 3.08V
- Output:
- Open Drain or Open Collector
- 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
MAX6328XR31/GG8 FAQ
1.How can I place an order for MAX6328XR31/GG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6328XR31/GG8 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 MAX6328XR31/GG8 reliable?
The price and inventory of MAX6328XR31/GG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6328XR31/GG8 is usually 5 days.
3.What payment methods are accepted for MAX6328XR31/GG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6328XR31/GG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6328XR31/GG8?
MAX6328XR31/GG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6328XR31/GG8 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 MAX6328XR31/GG8?
For technical support, including MAX6328XR31/GG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6328XR31/GG8 requirements.
6.How does Aetrix verify that MAX6328XR31/GG8 is sourced from the original manufacturer or authorized distributors?
All MAX6328XR31/GG8 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 MAX6328XR31/GG8 meets industry standards.
7.What is the process for return or replacement of MAX6328XR31/GG8?
All MAX6328XR31/GG8 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6328XR31/GG8, 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 MAX6328XR31/GG8 part is unused and in its original packaging.
Return procedure for MAX6328XR31/GG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6328XR31/GG8 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…
