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Analog Devices Inc./Maxim Integrated MAX6388XS28D6-T
- Part No.:
- MAX6388XS28D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS28D6-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,703
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Product details
Overview
MAX6388XS28D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.80V VCC reset threshold (±2.5% over -40°C to +125°C), 560ms minimum reset timeout, and auxiliary RESET IN input for dual-voltage monitoring. It consumes only 3μA at +1.8V and guarantees valid reset state down to VCC = 1V, used in battery-powered controllers and intelligent instrumentation.
For engineers reviewing the MAX6388XS28D6-T datasheet, MAX6388XS28D6-T pinout, MAX6388XS28D6-T application, or MAX6388XS28D6-T equivalent, key selection criteria include its 2.80V threshold accuracy, 560ms VCC reset timeout, 4-pin SC70 package, dual-supply monitoring capability via RESET IN, and automotive-grade AEC-Q100 qualification (denoted by /V suffix in related variants).
Technical Context
The MAX6388XS28D6-T integrates a precision voltage comparator for VCC monitoring and a separate +1.27V reference-based comparator for the auxiliary RESET IN input, enabling independent reset assertion when either supply falls below its threshold. Its internal timer ensures reset remains asserted for ≥560ms after VCC recovery.
It features an active-high push-pull RESET output capable of sourcing 500µA at VCC ≥ 2.5V while maintaining VOH ≥ 0.8×VCC, and includes negative-going VCC transient immunity validated up to 35µs at 100mV overdrive - critical for noisy power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.80V nominal, ±2.5% over -40°C to +125°C - ensures reliable brownout detection across automotive temperature range |
| Reset Timeout Period | 560ms minimum - provides sufficient hold time for μP initialization in embedded control systems |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered portable equipment |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor, simplifies interface to μP reset input |
| Auxiliary Input | RESET IN with 1.27V internal reference - supports user-defined secondary voltage monitoring via resistor divider |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial embedded applications |
| VCC Range | 1.0V to 5.5V - ensures reset validity during deep brownout and compatibility with 1.8V/2.5V/3.3V/5V logic domains |
Pinout & Package
MAX6388XS28D6-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 1.3mm × 1.6mm × 0.95mm, optimized for space-constrained portable and automotive PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor - powers device and triggers reset when falling below 2.80V |
| 2 | RESET | Active-high push-pull output - drives high during reset assertion; sinks current when deasserted |
| 3 | GND | Ground reference for all internal comparators and output stage - must be low-impedance connection |
| 4 | RESET IN | Auxiliary voltage monitor input - compared to internal 1.27V reference; enables dual-rail supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneous VCC and RESET IN supervision with independent thresholds - supports core/I/O rail monitoring in SoC systems |
| Low-power operation | 3μA supply current at 1.8V - extends battery life in always-on sensor nodes and wearables |
| High-accuracy threshold | ±2.5% reset threshold tolerance over full temperature range - reduces system-level margining requirements |
| Transient immunity | Validated immunity to 35µs negative VCC transients at 100mV overdrive - improves robustness in electrically noisy environments |
| Guaranteed reset validity | RESET output state defined down to VCC = 1V - ensures deterministic behavior during deep undervoltage conditions |
Applications
| Power Monitoring in Portable Equipment | Dual-Voltage System Supervision |
|---|---|
Use Scenario: Monitoring battery voltage and regulated I/O supply in handheld medical devices. IC Role / Device Role / Timing Role: Primary supervisor asserting active-high reset to ARM Cortex-M0 MCU upon battery sag or LDO dropout. Use Value: 560ms timeout ensures full firmware reload; 2.80V threshold aligns with Li-ion discharge knee, preventing erratic operation. | Use Scenario: Simultaneous monitoring of 1.2V core and 3.3V I/O rails in FPGA-based industrial controller. IC Role / Device Role / Timing Role: Dual-input supervisor using VCC for 3.3V rail and RESET IN (via resistor divider) for 1.2V rail. Use Value: Single IC replaces two discrete supervisors, reducing BOM count and PCB area while guaranteeing coordinated reset timing. |
| Automotive Body Control Module | Intelligent Sensor Node |
Use Scenario: Power-good monitoring in 12V-to-3.3V converted subsystems within vehicle door modules. IC Role / Device Role / Timing Role: AEC-Q100–qualified supervisor providing reset to 8-bit microcontroller during cold-crank events. Use Value: -40°C to +125°C operation and 2.80V threshold match automotive 3.3V rail stability requirements; 4-pin SC70 eases placement near power converters. | Use Scenario: Always-on environmental sensor node powered by energy harvesting with intermittent storage. IC Role / Device Role / Timing Role: Low-current supervisor ensuring clean restart after capacitor recharge cycles. Use Value: 3μA quiescent current minimizes drain on harvested energy; guaranteed reset down to 1V prevents lockup during weak charge states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT28D6-T | Same electrical specs but in 6-pin µDFN package - larger footprint, better thermal performance (θJA = 477°C/W vs. 322.6°C/W) | Suitable for thermally demanding industrial designs where SC70 self-heating may affect long-term threshold stability | Select MAX6388LT28D6-T when board layout allows larger package and thermal derating is critical |
| TLV809M28DBZR | 2.8V threshold, 560ms timeout, SOT-23-3 package - no RESET IN input, no manual reset, higher ICC (1.1µA typ at 1.8V) | Limited to single-rail monitoring; lacks auxiliary input for dual-voltage systems requiring coordinated reset | Choose TLV809M28DBZR only for cost-sensitive, single-supply applications without auxiliary monitoring needs |
Compared with MAX6388XS28D6-T, the µDFN variant offers superior thermal management in high-ambient environments, while the TLV809M28DBZR trades dual-supply capability and ultra-low ICC for lower unit cost and smaller pin count - making it viable only when RESET IN functionality is unnecessary.
Availability
MAX6388XS28D6-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, dual voltage systems, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6388XS28D6-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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP supervisory circuits targeting space- and power-constrained embedded systems requiring dual-rail monitoring and AEC-Q100 compliance.
FAQ
What is the exact reset threshold voltage of the MAX6388XS28D6-T?
The MAX6388XS28D6-T has a factory-set VCC reset threshold of 2.80V nominal, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "28" corresponds to 2.73V/2.80V/2.87V min/nom/max. The MAX6388XS28D6-T uses this precise threshold to detect brownout conditions in 2.8V–3.0V supply domains.
Does the MAX6388XS28D6-T support monitoring a second voltage rail?
Yes, the MAX6388XS28D6-T includes a dedicated RESET IN input pin that compares an external voltage to an internal +1.27V reference. When the voltage at RESET IN falls below this reference, the device asserts reset - enabling dual-rail supervision (e.g., VCC for I/O supply and RESET IN for core voltage). This feature is explicitly documented in the Pin Description and Applications Information sections for MAX6387/MAX6388/MAX6389 variants.
What is the function of the RESET output on the MAX6388XS28D6-T?
On the MAX6388XS28D6-T, the RESET output is an active-high push-pull driver. It transitions high when VCC drops below 2.80V or when RESET IN falls below +1.27V, and remains high for ≥560ms after both monitored voltages recover. Unlike open-drain versions, it requires no external pullup resistor and can directly drive standard CMOS/TTL reset inputs - a key differentiator confirmed in the General Description and Pin Configurations.
What package type and dimensions does the MAX6388XS28D6-T use?
The MAX6388XS28D6-T is packaged in a lead(Pb)-free, RoHS-compliant 4-pin SC70 (SOT-323) package with outline number 21-0098 and land pattern 90-0187. Its dimensions are 1.3mm × 1.6mm × 0.95mm. This compact footprint is specified in the Ordering Information and Package Information sections, distinguishing it from the 6-pin µDFN variants like MAX6388LT28D6-T.
Is the MAX6388XS28D6-T qualified for automotive applications?
The MAX6388XS28D6-T itself is not marked with the "/V" automotive qualification suffix in its part number, but it belongs to the AEC-Q100–qualified MAX6381–MAX6390 family. The datasheet explicitly states "AEC-Q100 Qualified" in the Features section and lists /V-suffixed variants (e.g., MAX6388XS28D6/V+T) in the Ordering Information - confirming that the MAX6388XS28D6-T shares the same die and qualification basis, with /V denoting the tested automotive-grade screening version.
MAX6388XS28D6-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.8V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS28D6-T FAQ
1.How can I place an order for MAX6388XS28D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS28D6-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 MAX6388XS28D6-T reliable?
The price and inventory of MAX6388XS28D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS28D6-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS28D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS28D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS28D6-T?
MAX6388XS28D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS28D6-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 MAX6388XS28D6-T?
For technical support, including MAX6388XS28D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS28D6-T requirements.
6.How does Aetrix verify that MAX6388XS28D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS28D6-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 MAX6388XS28D6-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS28D6-T?
All MAX6388XS28D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS28D6-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 MAX6388XS28D6-T part is unused and in its original packaging.
Return procedure for MAX6388XS28D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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