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Analog Devices Inc./Maxim Integrated MAX6388XS16D4-T
- Part No.:
- MAX6388XS16D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS16D4-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,803
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Product details
Overview
MAX6388XS16D4-T from Maxim Integrated is a low-power, dual-voltage microprocessor supervisory circuit with active-high push-pull reset output, 1.58V factory-set VCC reset threshold (±2.5% over -40°C to +125°C), 1120ms minimum VCC reset timeout, and auxiliary RESET IN input for monitoring a second voltage rail. It consumes only 3μA at +1.8V and guarantees valid reset state down to VCC = 1V, used in battery-powered instrumentation and dual-rail embedded controllers.
For engineers reviewing the MAX6388XS16D4-T datasheet, MAX6388XS16D4-T pinout, MAX6388XS16D4-T application, or MAX6388XS16D4-T equivalent, key selection criteria include its 4-pin SC70 package, +1.58V reset threshold accuracy, 1120ms VCC timeout, auxiliary voltage monitoring capability, and compatibility with systems requiring guaranteed reset assertion during brownout and power-down transitions.
Technical Context
The MAX6388XS16D4-T integrates two independent voltage comparators: one monitors VCC against a precision +1.58V internal reference, the other compares an external voltage applied to RESET IN against a +1.27V internal reference. Reset asserts when either comparator trips, and remains asserted for 1120ms after recovery.
It features an active-high push-pull RESET output capable of sourcing 800µA at VCC ≥ 4.5V (VOH ≥ 0.8×VCC) and sinking 3.2mA (VOL ≤ 0.4V), with guaranteed logic-level validity down to VCC = 1V. The device operates across -40°C to +125°C and supports negative-going VCC transient immunity up to 35µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | +1.58V (±2.5% over -40°C to +125°C); ensures reliable brownout detection for 1.8V core rails |
| RESET Timeout (VCC) | 1120ms minimum; provides sufficient hold time for processor initialization sequences |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage Range | 1.0V to 5.5V; supports valid reset assertion even during deep brownout conditions |
| RESET Output Type | Active-high push-pull; eliminates need for external pullup resistor in most host interfaces |
| Auxiliary Input | RESET IN pin with +1.27V threshold; allows user-defined secondary voltage monitoring via resistor divider |
| Temperature Range | -40°C to +125°C; qualified for automotive under-hood and industrial control environments |
Pinout & Package
MAX6388XS16D4-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, suitable for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and sets main reset threshold |
| 2 | RESET | Active-high push-pull reset output; drives high during fault condition and holds for 1120ms post-recovery |
| 3 | GND | Ground reference for all internal comparators, timers, and output drivers |
| 4 | RESET IN | Auxiliary voltage monitor input; compared to +1.27V reference to detect secondary rail faults |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC and a second rail via RESET IN, enabling dual-supply system integrity checks |
| Factory-trimmed ±2.5% threshold accuracy | Eliminates need for external calibration in production; meets AEC-Q100 Grade 1 requirements |
| 1120ms guaranteed reset timeout | Ensures full μP boot sequence completion before release, even under worst-case temperature drift |
| 3μA supply current at 1.8V | Extends battery life in always-on monitoring applications without compromising supervision reliability |
| Valid reset output down to VCC = 1V | Maintains deterministic logic state during deep undervoltage events, preventing spurious releases |
Applications
| Portable Medical Sensors | Automotive Body Control Modules |
|---|---|
Use Scenario: Wearable ECG patch continuously monitors battery voltage and analog front-end supply while operating on CR2032 coin cell. IC Role / Device Role / Timing Role: MAX6388XS16D4-T supervises both 1.8V sensor rail and 3.3V BLE radio rail, asserting RESET if either drops below threshold. Use Value: 3μA quiescent current extends operational life beyond 2 years; 1120ms timeout ensures complete firmware reload after brownout. |
Use Scenario: BCM microcontroller requires fail-safe reset during cold-cranking when battery dips to 6V for 100ms. IC Role / Device Role / Timing Role: MAX6388XS16D4-T monitors 5V MCU supply and 12V lighting driver rail via RESET IN divider, triggering reset on either fault. Use Value: -40°C to +125°C operation and ±2.5% threshold stability ensure reliable reset assertion across full automotive temperature range. |
| Industrial PLC I/O Modules | Dual-Rail FPGA Configuration Systems |
Use Scenario: DIN-rail mounted I/O module uses isolated 3.3V logic and 24V field-side supplies, requiring coordinated reset on either rail failure. IC Role / Device Role / Timing Role: MAX6388XS16D4-T monitors 3.3V VCC and derives 24V rail threshold via 10:1 resistor divider on RESET IN. Use Value: Active-high push-pull output directly interfaces with FPGA PROG_B pin without level-shifting; 1120ms timeout accommodates slow 24V rail ramp-up. |
Use Scenario: FPGA-based test equipment powers core (1.0V) and I/O (3.3V) rails from separate regulators; both must stabilize before configuration begins. IC Role / Device Role / Timing Role: MAX6388XS16D4-T supervises 3.3V I/O rail (VCC) and 1.0V core rail (via RESET IN divider), holding FPGA in reset until both are valid. Use Value: Dual-threshold detection prevents premature configuration; guaranteed reset validity down to VCC = 1V ensures safe release even during marginal 1.0V rail conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT16D4-T | Same electrical specs but in 6-pin μDFN (L611+1) instead of 4-pin SC70; higher thermal resistance (θJA = 477°C/W vs. 322.6°C/W) | Better suited for thermally dense PCB layouts where μDFN's exposed pad improves heat dissipation | Select MAX6388LT16D4-T when board layout allows larger footprint and thermal management prioritizes junction-to-board conduction |
| TPS3808G15DBVR | TI part with 1.5V reset threshold, 1200ms timeout, and open-drain output; lacks RESET IN input; 1.6μA typical ICC at 1.8V | Requires external pullup resistor; cannot monitor secondary rail; lower quiescent current but no dual-monitoring capability | Choose TPS3808G15DBVR only for single-rail applications where ultra-low ICC outweighs loss of auxiliary monitoring |
Compared with MAX6388XS16D4-T, the μDFN variant offers better thermal performance in high-density assemblies, while the TPS3808G15DBVR trades dual-rail supervision for marginally lower power and open-drain flexibility-neither is pin-compatible, and both require PCB layout changes.
Availability
MAX6388XS16D4-T is available at Aetrix Electronics and suitable for portable medical sensors, automotive body control modules, industrial PLC I/O modules, and dual-rail FPGA configuration systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6388XS16D4-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 computing applications, emphasizing low power, high reliability, and AEC-Q100 qualification.
The MAX6381–MAX6390 family delivers ultra-low-power microprocessor supervisory circuits optimized for battery-operated and dual-voltage embedded systems where deterministic reset timing and multi-rail monitoring are critical.
FAQ
What is the exact reset threshold voltage of MAX6388XS16D4-T?
The MAX6388XS16D4-T has a factory-set VCC reset threshold of +1.58V, with ±2.5% tolerance over the full operating temperature range (-40°C to +125°C). This value is fixed and non-adjustable; the "16" suffix in the part number explicitly denotes the 1.58V threshold per Maxim's Reset Threshold table.
Does MAX6388XS16D4-T support monitoring of a second voltage rail?
Yes, MAX6388XS16D4-T includes a dedicated RESET IN pin that compares an external voltage to an internal +1.27V reference. By connecting a resistor divider to RESET IN, users can configure a custom threshold for monitoring a second supply rail-such as a 5V or 12V source-alongside the primary VCC rail.
What is the reset timeout duration for MAX6388XS16D4-T?
The MAX6388XS16D4-T provides a minimum VCC reset timeout period of 1120ms, as indicated by the "D4" suffix in the part number. This timeout begins when VCC rises above the 1.58V threshold and ensures the reset signal remains asserted long enough for complete microprocessor initialization.
What package type and pin count does MAX6388XS16D4-T use?
MAX6388XS16D4-T is supplied in a 4-pin SC70 package (outline 21-0098), with pin 1 = VCC, pin 2 = RESET, pin 3 = GND, and pin 4 = RESET IN. This compact 2.0mm × 2.1mm footprint is RoHS-compliant and optimized for space-constrained portable electronics.
Is MAX6388XS16D4-T qualified for automotive applications?
MAX6388XS16D4-T is not explicitly marked with the "/V" automotive qualification suffix in its ordering code, and the datasheet does not list it in the /V trim versions table. While it operates across -40°C to +125°C, formal AEC-Q100 qualification applies only to designated /V variants such as MAX6388XS16D4/V+T.
MAX6388XS16D4-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:
- 1.58V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS16D4-T FAQ
1.How can I place an order for MAX6388XS16D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS16D4-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 MAX6388XS16D4-T reliable?
The price and inventory of MAX6388XS16D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS16D4-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS16D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS16D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS16D4-T?
MAX6388XS16D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS16D4-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 MAX6388XS16D4-T?
For technical support, including MAX6388XS16D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS16D4-T requirements.
6.How does Aetrix verify that MAX6388XS16D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS16D4-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 MAX6388XS16D4-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS16D4-T?
All MAX6388XS16D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS16D4-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 MAX6388XS16D4-T part is unused and in its original packaging.
Return procedure for MAX6388XS16D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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