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Analog Devices Inc./Maxim Integrated MAX6898PALT+
- Part No.:
- MAX6898PALT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6898PALT+.pdf
- Description:
- MAX6898 ULTRA-SMALL, ADJUSTABLE
- Quantity:
- Payment:
- Shipping:
Inventory:369
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Product details
Overview
MAX6898PALT+ from Maxim Integrated is an ultra-small, low-power supervisory circuit with active-low enable and active-low open-drain output, designed for precise power-supply sequencing and reset control in automotive and industrial systems. It monitors input voltages down to 0.5V via external resistive divider, features 150ns enable-to-output propagation delay, operates from 1.5V to 5.5V supply, and is fully specified over –40°C to +125°C.
For engineers reviewing the MAX6898PALT+ datasheet, MAX6898PALT+ pinout, MAX6898PALT+ application, or MAX6898PALT+ equivalent, this page delivers verified technical context, real-world sequencing use cases, pin-level design meaning, and validated alternative options for high-reliability embedded power management.
Technical Context
The MAX6898PALT+ implements a fixed 150ns propagation delay from ENABLE assertion to OUT assertion-no capacitor adjustment required for enable-triggered timing. Its IN pin uses a precise 0.5V internal threshold with 5mV hysteresis (0.495V falling), enabling accurate monitoring of low-voltage rails such as 1.2V or 1.8V supplies when paired with external resistive dividers.
As an active-low open-drain device, MAX6898PALT+ drives OUT low when asserted and requires an external pullup; it supports up to 28V pullup voltage and sinks ≥90µA at 0.3V VOL. The ENABLE input has logic thresholds of 0.4V (VIL) and 1.4V (VIH), ensuring robust noise immunity in noisy automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - powers directly from common system rails without LDO requirement. |
| Input Threshold Accuracy | ±1.8% over temperature - ensures stable trip point across –40°C to +125°C for automotive-grade reliability. |
| Enable-to-Output Delay | 150ns typ - enables deterministic, sub-microsecond sequencing response without external capacitor tuning. |
| Output Type | Active-low open-drain - allows wired-OR configuration and 28V-tolerant pullup for mixed-voltage system interfacing. |
| Supply Current | 10µA typ - minimizes quiescent power draw in always-on monitoring circuits. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
| Input Hysteresis | 5mV - prevents chatter during slow-rising/falling supply transitions. |
Pinout & Package
MAX6898PALT+ is housed in a 6-pin µDFN package (1.0mm × 1.5mm, 0.5mm pitch), optimized for space-constrained PCB layouts in automotive ECUs and portable medical devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENABLE | Active-low logic-enable input | Drive high to deassert OUT immediately; drive low to assert OUT after 150ns propagation delay when IN > 0.5V. |
| 2 - GND | Ground reference | Primary return path for internal circuitry and CDELAY capacitor discharge; must be low-impedance. |
| 3 - IN | High-impedance monitor input | Accepts voltage from external resistive divider; 15nA max input leakage preserves divider accuracy with MΩ-range resistors. |
| 4 - OUT | Active-low open-drain output | Sinks current when asserted; requires external pullup (e.g., to 3.3V, 5V, or 28V); 28V tolerant, 0.3V VOL @ 90µA. |
| 5 - CDELAY | Delay timing node | Internally tied to fixed 150ns delay path - no external capacitor needed; unused but must be connected to GND per layout guidelines. |
| 6 - VCC | Power supply input | 1.5V–5.5V operation; bypass with 0.1µF ceramic capacitor close to pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 150ns enable propagation delay | Eliminates capacitor tolerance and temperature drift issues in time-critical enable chains. |
| 28V-tolerant open-drain output | Enables direct interface with higher-voltage subsystems (e.g., 12V/24V automotive buses) without level-shifting. |
| 0.5V precision input threshold | Supports accurate monitoring of modern low-voltage rails (1.2V, 1.0V) using standard resistor values. |
| Ultra-low 10µA supply current | Extends battery life in always-on monitoring applications such as telematics and sensor nodes. |
| –40°C to +125°C guaranteed operation | Validated for under-dash, engine bay, and industrial control environments without derating. |
Applications
| Automotive Power Sequencing | Industrial PLC I/O Module Supervision |
|---|---|
Use Scenario: Coordinating startup order of multiple DC-DC converters in ADAS domain controller, ensuring 5V rail powers FPGA before 1.2V core rail. IC Role / Device Role / Timing Role: MAX6898PALT+ acts as a fixed-delay enable gate triggered by upstream 5V OK signal, asserting downstream 1.2V converter EN pin with deterministic 150ns latency. Use Value: Prevents FPGA configuration failure due to premature core voltage application; eliminates need for RC timing networks prone to drift. |
Use Scenario: Monitoring isolated 3.3V auxiliary supply in modular PLC backplane, triggering fault latch if voltage drops below 3.1V during brownout. IC Role / Device Role / Timing Role: MAX6898PALT+ compares divided 3.3V rail against 0.5V reference and asserts open-drain fault signal to microcontroller's interrupt pin. Use Value: Enables immediate firmware response (<200ns detection-to-interrupt) while supporting 24V-rated pullup for compatibility with legacy 24V logic inputs. |
| Medical Infusion Pump Reset Control | Telecom Line Card Voltage Sequencing |
Use Scenario: Generating clean, glitch-free reset pulse for ARM Cortex-M7 MCU upon 3.3V rail stabilization in battery-powered infusion pump. IC Role / Device Role / Timing Role: MAX6898PALT+ monitors 3.3V rail via 1MΩ/154kΩ divider (sets 3.1V trip), asserts active-low reset with 150ns delay after enable activation. Use Value: Guarantees MCU reset release only after full rail stability, meeting IEC 60601-1 safety timing requirements without software dependency. |
Use Scenario: Enabling dual 12V/–48V power modules in telecom line card with strict inter-rail timing constraints (12V must stabilize before –48V enable). IC Role / Device Role / Timing Role: MAX6898PALT+ receives 12V OK signal, asserts active-low enable to –48V module's EN pin via 28V-tolerant open-drain output pulled to 12V. Use Value: Avoids destructive shoot-through in bipolar power stages by enforcing hardware-enforced sequencing with zero layout sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory sequencing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6898AALT+ | Capacitor-adjustable enable-to-output delay (190ms max), not fixed 150ns. | Used where variable sequencing timing is required (e.g., adaptive power-up based on temperature). | Select MAX6898AALT+ only if programmable delay is needed; MAX6898PALT+ preferred for deterministic, minimal-latency enable paths. |
| TPS3808G15DBVR | Active-low push-pull output, 200ms min adjustable delay, 1.5V–6.5V supply, 1.5% threshold accuracy. | Lacks 28V-tolerant output; requires level-shifter for >5.5V interfaces; higher quiescent current (12µA). | Choose TPS3808G15DBVR for cost-sensitive industrial designs needing push-pull simplicity; avoid when 28V pullup or ultra-low ICC is mandatory. |
Compared with MAX6898AALT+, MAX6898PALT+ trades delay flexibility for nanosecond-level timing determinism and lower component count. Against TPS3808G15DBVR, it offers superior voltage tolerance and lower ICC but requires external pullup design.
Availability
MAX6898PALT+ is available at Aetrix Electronics and suitable for automotive power sequencing, industrial PLC supervision, and medical device reset control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6898PALT+ 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) is a leader in precision analog and mixed-signal ICs, specializing in power management, sensing, and interface solutions for demanding environments.
The MAX6895–MAX6899 family was engineered specifically for compact, high-reliability power sequencing and supervisory functions in automotive, industrial, and medical systems where board space, thermal performance, and wide-temperature operation are critical.
FAQ
What is the function of the CDELAY pin on MAX6898PALT+?
The CDELAY pin on MAX6898PALT+ is internally connected to the fixed 150ns propagation delay path and does not require an external capacitor. Per Maxim's layout guidance, it must be connected to GND to ensure proper operation and noise immunity - unlike the A-version variants where CDELAY sets timing via external capacitance.
Can MAX6898PALT+ monitor a 1.0V supply directly?
Yes, MAX6898PALT+ can monitor a 1.0V supply directly using an external resistive divider. With its precise 0.5V input threshold and ±1.8% accuracy over temperature, a 2:1 divider (e.g., 1MΩ top, 1MΩ bottom) yields exactly 0.5V at IN when the monitored rail is 1.0V, satisfying the trip condition with margin.
Does MAX6898PALT+ require a pullup resistor on the OUT pin?
Yes, MAX6898PALT+ requires an external pullup resistor on the OUT pin because it features an active-low open-drain output. The resistor value depends on pullup voltage and sink current requirements - e.g., ≥56kΩ for 28V pullup with <0.5mA sink, per Electrical Characteristics table.
What is the maximum voltage that can be applied to the OUT pin of MAX6898PALT+?
The OUT pin of MAX6898PALT+ is rated for up to 28V when in high-impedance (deasserted) state, as confirmed in Absolute Maximum Ratings. This 28V tolerance allows safe interfacing with higher-voltage logic domains without additional protection circuitry.
How does MAX6898PALT+ behave during VCC brownout?
During VCC brownout, MAX6898PALT+ asserts undervoltage lockout (UVLO) below 1.20V–1.35V, forcing OUT to deassert (go high-impedance). Below 1.2V, output state is undefined - hence system-level brownout protection must include VCC monitoring with hysteresis or external supervisor coordination.
MAX6898PALT+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Sequencer
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (1.5x1)
MAX6898PALT+ FAQ
1.How can I place an order for MAX6898PALT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6898PALT+ 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 MAX6898PALT+ reliable?
The price and inventory of MAX6898PALT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6898PALT+ is usually 5 days.
3.What payment methods are accepted for MAX6898PALT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6898PALT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6898PALT+?
MAX6898PALT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6898PALT+ 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 MAX6898PALT+?
For technical support, including MAX6898PALT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6898PALT+ requirements.
6.How does Aetrix verify that MAX6898PALT+ is sourced from the original manufacturer or authorized distributors?
All MAX6898PALT+ 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 MAX6898PALT+ meets industry standards.
7.What is the process for return or replacement of MAX6898PALT+?
All MAX6898PALT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6898PALT+, 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 MAX6898PALT+ part is unused and in its original packaging.
Return procedure for MAX6898PALT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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