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Analog Devices Inc./Maxim Integrated MAX6897AALT/GG8
- Part No.:
- MAX6897AALT/GG8
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6897AALT/GG8.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,779
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Product details
Overview
MAX6897AALT/GG8 from Maxim Integrated is an ultra-small, low-power, adjustable-voltage supervisory circuit with active-high enable and active-high open-drain output, designed for power-supply sequencing and reset control in space-constrained systems. It monitors input voltages down to 0.5V with ±5mV hysteresis, supports capacitor-adjustable delay (40µs to >1s), operates from 1.5V–5.5V supply, and is fully specified over –40°C to +125°C.
For engineers reviewing the MAX6897AALT/GG8 datasheet, MAX6897AALT/GG8 pinout, MAX6897AALT/GG8 application, or MAX6897AALT/GG8 equivalent, this page delivers verified electrical parameters, thermal characteristics, timing behavior under VIN/ENABLE transitions, open-drain output voltage tolerance (up to 28V), and real-world sequencing use cases - all confirmed against Maxim's official 2018 datasheet (Rev 12).
Technical Context
The MAX6897AALT/GG8 implements a fixed 0.5V internal threshold comparator on the IN pin, with 5mV hysteresis, enabling precise monitoring of externally divided rail voltages. Its ENABLE pin is active-high and logic-compatible (VIH = 1.4V, VIL = 0.4V), allowing direct interface with microcontrollers or FPGA I/O.
Delay timing is governed by an internal 250nA current source charging an external capacitor (CCDELAY) from CDELAY to GND; assertion occurs when CDELAY reaches 1.00V, yielding tDELAY = (CCDELAY × 4.0 × 10⁶) + 40µs. The open-drain OUT pin supports pull-up to 28V and sinks up to 90µA at VOL ≤ 0.3V (VCC ≥ 1.2V), making it suitable for level-shifting and high-side control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - powers directly from common logic rails (1.8V, 3.3V, 5V) without LDO dependency |
| Input Threshold Voltage | 0.500V ±0.009V (–40°C to +125°C) - enables accurate monitoring of sub-1V rails via resistive divider |
| Hysteresis | 5mV - prevents chatter during slow-rising/falling monitored signals |
| Delay Adjustment Range | 40µs to >1s via 0–5000pF external capacitor - supports both fast power-on reset and long inter-rail sequencing gaps |
| Output Type | Active-high open-drain - allows flexible pull-up to 28V for interfacing with higher-voltage logic or MOSFET gates |
| Supply Current | 10µA typical (VCC = 3.3V, TA = +25°C) - enables always-on supervision in battery-backed or ultra-low-power systems |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood, industrial motor drives, and telecom base station applications |
Pinout & Package
MAX6897AALT/GG8 is housed in a 6-pin µDFN package (1.0mm × 1.5mm, 0.5mm pitch), optimized for high-density PCB layouts. Thermal resistance θJA = 477°C/W reflects its ultra-thin profile and limited copper exposure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENABLE | Active-high logic-enable input | Drives output true state (OUT = high impedance → pulled high externally) only when VIN > 0.5V and ENABLE = high; deasserts output within 150ns when ENABLE goes low |
| 2 - GND | Ground reference | Return path for internal bias, delay current source, and output sink; must be low-impedance for stable threshold and timing |
| 3 - IN | High-impedance monitor input | Accepts voltage from external resistive divider; 15nA max input leakage permits MΩ-range dividers without accuracy loss |
| 4 - OUT | Active-high open-drain output | Sinks current when asserted (low); requires external pull-up; tolerates 28V on output node - enables direct drive of p-MOSFET gates or higher-voltage logic |
| 5 - CDELAY | Capacitor-adjustable delay node | Internal 250nA current source charges external CCDELAY to 1.00V; delay = (CCDELAY × 4.0 × 10⁶) + 40µs; discharged automatically on output assertion |
| 6 - VCC | Power supply input | Supplies internal circuitry; bypassing with 0.1µF ceramic capacitor to GND is mandatory for noise immunity and UVLO stability |
Key Features
| Feature | Design Value |
|---|---|
| 1.8% threshold accuracy over temperature | Ensures reliable trip point across full –40°C to +125°C range without calibration or trimming |
| Capacitor-programmable delay with 40µs base offset | Enables precise, board-level tuning of sequencing intervals without firmware or additional ICs |
| 28V-tolerant open-drain output | Eliminates need for level translators when controlling 5V, 12V, or 24V power switches or logic interfaces |
| Ultra-low 10µA supply current | Supports permanent supervision in energy-harvesting, backup-battery, or always-on IoT edge nodes |
| –40°C to +125°C guaranteed operation | Validated for deployment in automotive engine control units, industrial PLCs, and outdoor telecom hardware |
Applications
| Power-Supply Sequencing | Microcontroller Reset Control |
|---|---|
|
Use Scenario: Coordinating startup order of multiple DC-DC converters (e.g., 12V → 5V → 3.3V → 1.8V) in FPGA-based systems. IC Role / Device Role / Timing Role: Supervisory sequencer that asserts downstream enable signals only after upstream rail exceeds 0.5V × (R1+R2)/R2 and completes capacitor-delayed holdoff. Use Value: Prevents latch-up and back-powering by enforcing strict monotonic ramp-up, using only one passive resistor divider per rail and one timing capacitor per stage. |
Use Scenario: Generating a clean, glitch-free reset pulse for an ARM Cortex-M7 MCU after main 3.3V supply stabilizes. IC Role / Device Role / Timing Role: Voltage monitor with programmable delay acting as hardware reset generator; IN tied to 3.3V rail via 1MΩ/1MΩ divider (monitors 1.65V), CDELAY = 100nF → ~400ms delay. Use Value: Guarantees CPU remains held in reset until all peripherals are powered and clocks stabilized - no software dependency or watchdog timer required. |
| High-Voltage Gate Control | Automotive Subsystem Enable |
|
Use Scenario: Driving the gate of a 24V-rated p-channel MOSFET used to switch a 19V camera power rail in an ADAS module. IC Role / Device Role / Timing Role: Level-shifting sequencer: OUT pulls gate low (via 10kΩ pull-up to 24V) only after 12V bias rail is valid and ENABLE is asserted by system controller. Use Value: Leverages 28V-tolerant open-drain output to directly control high-side switch without optocoupler or dedicated level shifter - reduces BOM count and layout area. |
Use Scenario: Enabling a CAN transceiver and associated sensor interface only after vehicle battery (VBAT) rises above 11.5V and ignition signal is present. IC Role / Device Role / Timing Role: Dual-input supervisor: IN monitors scaled VBAT; ENABLE receives ignition signal; both must be valid before OUT releases subsystem power enable. Use Value: Prevents false wake-ups and EMI during cranking (VBAT dip to 6V); hysteresis and 125°C rating ensure robustness in under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-monitoring and sequencing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6897AAZT+ | Same functionality and specs, but in 6-pin thin SOT23 (1.60mm × 2.90mm) package - larger footprint, lower θJA (110°C/W) | Better thermal performance in airflow-limited enclosures; easier hand-soldering and rework than µDFN | Select when thermal margin > PCB area constraints, or when legacy SOT23 land pattern reuse is required. |
| TLV809KDBZR | Fixed 3.08V threshold, no adjustable delay, push-pull output, 1.8V–6V supply - simpler, lower-cost, no external capacitor needed | Limited to single-rail reset without sequencing; lacks open-drain flexibility and 28V tolerance | Select for basic undervoltage detection where timing precision and level-shifting are unnecessary. |
Compared with MAX6897AAZT+, the MAX6897AALT/GG8 offers superior board-area efficiency and higher thermal resistance - advantageous in compact modules but requiring careful thermal design. Versus TLV809KDBZR, it provides full sequencing capability, adjustable delay, and 28V-tolerant output - essential for multi-rail and high-voltage control, albeit at higher component cost and design complexity.
Availability
MAX6897AALT/GG8 is available at Aetrix Electronics and suitable for automotive subsystem enable, FPGA power sequencing, microcontroller reset generation, and high-voltage gate control requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX6897AALT/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 demanding industrial, automotive, and computing applications.
The MAX6895–MAX6899 family was engineered specifically for ultra-compact, low-power voltage supervision and sequencing in space- and power-constrained systems - emphasizing adjustability, wide temperature operation, and flexible output configurations.
FAQ
What is the maximum voltage the MAX6897AALT/GG8 OUT pin can tolerate?
The MAX6897AALT/GG8 OUT pin is rated for up to 28V when in high-impedance (deasserted) state. This allows safe connection to external pull-up voltages as high as 28V - critical for driving p-MOSFET gates or interfacing with higher-voltage logic domains without level-shifting components. The specification is confirmed in the Absolute Maximum Ratings table of the official datasheet.
How do I calculate the delay time for the MAX6897AALT/GG8 using an external capacitor?
Delay time for the MAX6897AALT/GG8 is calculated as tDELAY = (CCDELAY × 4.0 × 10⁶) + 40µs, where CCDELAY is the capacitance (in farads) connected between CDELAY and GND. For example, a 100nF capacitor yields ~400ms delay. This equation is derived from the internal 250nA current source charging CCDELAY to 1.00V and is validated in the Electrical Characteristics and Typical Operating Characteristics sections of the datasheet.
Does the MAX6897AALT/GG8 require an external pull-up resistor on the OUT pin?
Yes - the MAX6897AALT/GG8 features an active-high open-drain output, meaning OUT actively sinks current when asserted but presents high impedance when deasserted. An external pull-up resistor to the desired logic-high voltage (e.g., 3.3V, 5V, or up to 28V) is mandatory to establish a defined high state. Pull-up value depends on sink current requirements and voltage; for 28V pull-up and 0.5mA sink, ≥56kΩ is recommended.
Can the MAX6897AALT/GG8 monitor a 1.2V supply directly?
No - the MAX6897AALT/GG8 has a fixed 0.5V internal threshold and must be used with an external resistive divider to scale the monitored voltage. To supervise a 1.2V rail, connect R1 and R2 such that VIN = 1.2V × R2/(R1 + R2) = 0.5V. For example, with R2 = 1MΩ, R1 ≈ 1.4MΩ. Input leakage (±15nA) ensures minimal error even with MΩ-scale resistors.
Is the MAX6897AALT/GG8 AEC-Q100 qualified?
No - the MAX6897AALT/GG8 is not AEC-Q100 qualified. Only specific variants bearing the "/V+" suffix (e.g., MAX6897AAZT/V+) are automotive-qualified. The MAX6897AALT/GG8 uses the same µDFN package and core silicon but lacks the extended test and traceability documentation required for automotive qualification. Use MAX6897AAZT/V+ for AEC-Q100-compliant designs.
MAX6897AALT/GG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active High
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (1.5x1)
MAX6897AALT/GG8 FAQ
1.How can I place an order for MAX6897AALT/GG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6897AALT/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 MAX6897AALT/GG8 reliable?
The price and inventory of MAX6897AALT/GG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6897AALT/GG8 is usually 5 days.
3.What payment methods are accepted for MAX6897AALT/GG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6897AALT/GG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6897AALT/GG8?
MAX6897AALT/GG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6897AALT/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 MAX6897AALT/GG8?
For technical support, including MAX6897AALT/GG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6897AALT/GG8 requirements.
6.How does Aetrix verify that MAX6897AALT/GG8 is sourced from the original manufacturer or authorized distributors?
All MAX6897AALT/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 MAX6897AALT/GG8 meets industry standards.
7.What is the process for return or replacement of MAX6897AALT/GG8?
All MAX6897AALT/GG8 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6897AALT/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 MAX6897AALT/GG8 part is unused and in its original packaging.
Return procedure for MAX6897AALT/GG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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