My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6388XS19D7-T
- Part No.:
- MAX6388XS19D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS19D7-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,322
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6388XS19D7-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 1.9V reset threshold (±2.5% over -40°C to +125°C), 1200ms VCC reset timeout, and auxiliary RESET IN input for dual-voltage monitoring. It operates from 1.0V to 5.5V supply, 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 MAX6388XS19D7-T datasheet, MAX6388XS19D7-T pinout, MAX6388XS19D7-T application, or MAX6388XS19D7-T equivalent, key selection criteria include its 1.9V threshold accuracy, 1200ms timeout, 4-pin SC70 package, RESET IN compatibility with external resistor dividers, and AEC-Q100-qualified automotive variants.
Technical Context
The MAX6388XS19D7-T integrates a precision voltage comparator referencing an internal 1.27V bandgap for the auxiliary RESET IN input, enabling user-configurable second-supply monitoring via external resistive divider. Its primary VCC monitor uses a factory-trimmed threshold of 1.90V (min 1.85V, max 1.95V) with ±2.5% tolerance across full temperature range.
It features an active-high push-pull RESET output that transitions high during fault conditions (VCC < 1.9V or RESET IN < 1.27V) and remains asserted for ≥1200ms after recovery. The device includes negative-going VCC transient immunity up to 150µs for 100mV overdrive and guarantees correct logic state down to VCC = 1V without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.90V nominal (1.85V–1.95V), ±2.5% over -40°C to +125°C - ensures reliable brownout detection across automotive/industrial temperature range |
| VCC Reset Timeout | 1200ms minimum - provides sufficient hold time for complex μP 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 direct interface with 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor, reduces BOM count and board space |
| Auxiliary Input | RESET IN comparator referenced to 1.27V (±1.5% at +25°C) - allows precise secondary supply monitoring via resistor divider |
| Transient Immunity | Immune to negative VCC transients ≤150µs at 100mV overdrive - prevents false resets in noisy power environments |
Pinout & Package
MAX6388XS19D7-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 | Main supply input and primary voltage monitor rail - powers internal circuitry and triggers reset when falling below 1.9V |
| 2 | RESET | Active-high push-pull output - drives high during reset assertion; sinks/source current per spec without external components |
| 3 | GND | Analog/digital ground reference - must be connected directly to system ground plane for stable threshold accuracy |
| 4 | RESET IN | Auxiliary voltage monitor input - high-impedance (≤50nA leakage) node compared to internal 1.27V reference for dual-supply supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring capability | Simultaneous supervision of VCC and external rail via RESET IN pin - enables validation of I/O and core voltage sequencing in SoC systems |
| Factory-trimmed precision threshold | 1.90V ±2.5% over full temperature range - eliminates need for external calibration or trimming components |
| Ultra-low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications such as smart meters and wearables |
| Guaranteed reset validity down to 1V | RESET output remains logically valid even as VCC decays to 1.0V - ensures clean shutdown signaling before power collapse |
| Negative transient rejection | Immunity to sub-150µs VCC glitches - avoids spurious resets in electrically noisy industrial or automotive environments |
Applications
| Battery-Powered Instrumentation | Dual-Rail Microcontroller Systems |
|---|---|
Use Scenario: Portable handheld multimeter with separate 3.3V analog front-end and 1.8V digital core, requiring coordinated power-up sequencing and brownout protection. IC Role / Device Role / Timing Role: Supervises both rails via VCC (3.3V) and RESET IN (1.8V-derived), asserting active-high RESET until both supplies stabilize for ≥1200ms. Use Value: Prevents firmware lockup during partial power loss by ensuring μC remains held in reset until all critical supplies meet regulation. | Use Scenario: Industrial PLC module with independent 5V control logic and 2.5V FPGA I/O bank, where asymmetric voltage collapse must trigger safe shutdown. IC Role / Device Role / Timing Role: Monitors 5V rail on VCC and 2.5V rail via RESET IN divider; asserts RESET if either falls below threshold, holding for 1200ms post-recovery. Use Value: Eliminates need for two discrete supervisors, reducing component count and PCB area while guaranteeing synchronized reset timing. |
| Automotive Body Control Modules | Low-Power IoT Edge Sensors |
Use Scenario: AEC-Q100 qualified BCM using 12V-to-3.3V/1.2V DC-DC conversion, subject to load-dump transients and cold-crank undervoltage events. IC Role / Device Role / Timing Role: Provides robust VCC supervision (3.3V) and monitors 1.2V core rail via RESET IN; leverages 150µs transient immunity to ignore short dips during cranking. Use Value: Ensures deterministic μC reset behavior during automotive battery voltage excursions without requiring additional filtering or debounce circuitry. | Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell, operating intermittently with 10-year target lifetime. IC Role / Device Role / Timing Role: Supervises 3.0V LDO output (VCC) and detects backup battery voltage drop via RESET IN; draws only 3μA at 1.8V to minimize standby drain. Use Value: Enables reliable wake-from-sleep reset assertion while contributing negligible current to total system quiescent load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT19D7-T | Same electrical specs but in 6-pin µDFN (1.5mm × 2.0mm) instead of 4-pin SC70 - higher thermal resistance (θJA = 477°C/W vs. 322.6°C/W) | Preferred for thermally demanding layouts with available PCB area; less suitable for ultra-thin portable devices | Select when board layout permits larger footprint and requires improved thermal performance under sustained 125°C ambient |
| TLV809K33DBZR | Fixed 3.3V reset threshold, no RESET IN pin, 200ms timeout, SOT-23-3 package - lacks dual-supply capability and adjustable timing | Suitable only for single-rail 3.3V systems without auxiliary monitoring needs | Choose only for cost-sensitive, single-supply applications where 3.3V threshold and shorter timeout are acceptable |
Compared with MAX6388LT19D7-T, the MAX6388XS19D7-T offers smaller SC70 footprint and lower thermal resistance for compact designs; versus TLV809K33DBZR, it delivers dual-supply supervision, 1.9V threshold, and 1200ms timeout - essential for battery-backed and multi-rail embedded systems.
Availability
MAX6388XS19D7-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, dual-rail microcontroller systems, automotive body control modules, and low-power IoT edge sensors requiring stable component supply and long-term lifecycle support.
Supply support for MAX6388XS19D7-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 industrial, automotive, communications, and computing markets, emphasizing low power, high reliability, and small form factor.
The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor reset circuits optimized for space-constrained, battery-sensitive, and thermally demanding applications - targeting portable equipment, automotive ECUs, and intelligent instrumentation.
FAQ
What is the exact reset threshold voltage of MAX6388XS19D7-T and how stable is it over temperature?
The MAX6388XS19D7-T has a factory-set nominal reset threshold of 1.90V, with guaranteed limits of 1.85V (min) and 1.95V (max) at +25°C. Over the full operating range of -40°C to +125°C, the threshold maintains ±2.5% accuracy - meaning the actual trip point stays within 1.85V–1.95V across temperature, confirmed by production testing and datasheet specifications.
Does MAX6388XS19D7-T support monitoring of a second voltage rail, and how is it implemented?
Yes, MAX6388XS19D7-T supports dual-supply monitoring via its dedicated RESET IN pin. This pin connects to an internal comparator referenced to a precise 1.27V bandgap. To supervise a second rail (e.g., 1.2V or 2.5V), apply the voltage through a resistor divider so that the divided value equals 1.27V at the desired trip point - enabling accurate, user-configurable secondary voltage detection without additional ICs.
What is the function and timing behavior of the RESET output on MAX6388XS19D7-T?
The RESET output of MAX6388XS19D7-T is an active-high push-pull driver. It asserts high when VCC drops below 1.90V or when RESET IN falls below 1.27V, and remains high for a minimum of 1200ms after both monitored voltages recover above their thresholds. This guaranteed timeout ensures μP reset hold time meets boot-loader requirements in complex embedded systems.
Can MAX6388XS19D7-T operate reliably at very low supply voltages, and what is its minimum functional VCC?
Yes, MAX6388XS19D7-T guarantees correct RESET output logic state down to VCC = 1.0V - meaning the active-high RESET signal remains valid and predictable even as the supply collapses. Below 1.0V, functionality is not specified. This feature enables clean shutdown signaling in battery-depleted scenarios before complete power loss.
Is MAX6388XS19D7-T pin-compatible with other members of the MAX6381–MAX6390 family, and which packages does it share?
MAX6388XS19D7-T uses the 4-pin SC70 package (outline 21-0098), shared with MAX6384–MAX6390 in XS-prefix variants. It is not pin-compatible with 3-pin SC70 (MAX6381–MAX6383) or 6-pin µDFN versions (e.g., MAX6388LT19D7-T). Pin mapping is fixed: Pin 1 = VCC, Pin 2 = RESET, Pin 3 = GND, Pin 4 = RESET IN - verified in Maxim's official pin configuration diagrams.
MAX6388XS19D7-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:
- 1.9V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS19D7-T FAQ
1.How can I place an order for MAX6388XS19D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS19D7-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 MAX6388XS19D7-T reliable?
The price and inventory of MAX6388XS19D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS19D7-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS19D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS19D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS19D7-T?
MAX6388XS19D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS19D7-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 MAX6388XS19D7-T?
For technical support, including MAX6388XS19D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS19D7-T requirements.
6.How does Aetrix verify that MAX6388XS19D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS19D7-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 MAX6388XS19D7-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS19D7-T?
All MAX6388XS19D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS19D7-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 MAX6388XS19D7-T part is unused and in its original packaging.
Return procedure for MAX6388XS19D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6388XS19D7-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…
