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Analog Devices Inc./Maxim Integrated MAX6895AALT+T
- Part No.:
- MAX6895AALT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6895AALT+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,191
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Product details
Overview
MAX6895AALT+T from Maxim Integrated is an ultra-small, low-power voltage supervisor IC with adjustable threshold and capacitor-programmable sequencing delay. It features an active-high enable input, active-high push-pull output, 0.5V fixed monitor threshold (±1.8% over temperature), 10µA typical supply current, and operates from 1.5V to 5.5V across –40°C to +125°C. It is used in power-supply sequencing for multi-rail systems such as industrial controllers and automotive ECUs.
For engineers reviewing the MAX6895AALT+T datasheet, MAX6895AALT+T pinout, MAX6895AALT+T application, or MAX6895AALT+T equivalent, this page delivers verified functional identity, precise timing behavior, package-specific thermal data, real-world sequencing use cases, and validated alternative options - all grounded in Maxim's official documentation and electrical specifications.
Technical Context
The MAX6895AALT+T implements a high-impedance monitor input (IN) with a fixed 0.5V rising threshold and 5mV hysteresis, enabling precise low-voltage monitoring via external resistive dividers. Its ENABLE pin is active-high, and its OUT is active-high push-pull, referenced to VCC.
Sequencing delay is fully capacitor-adjustable: tDELAY = (CCDELAY × 4.0 × 10⁶) + 40µs, where CCDELAY connects from CDELAY to GND. The device also provides 150ns enable-to-output propagation delay (A-version), undervoltage lockout at 1.20–1.35V, and guaranteed operation up to +125°C with AEC-Q100 qualification available in select variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - supports wide-input rail monitoring without external regulators. |
| Monitor Threshold | 0.5V ±1.8% over –40°C to +125°C - enables accurate sub-1V rail supervision with minimal divider error. |
| Supply Current | 10µA typical at 3.3V - ensures negligible impact on battery-powered or low-quiescent systems. |
| Delay Adjustment | Capacitor-programmable (0.047µF → ~190ms) - allows precise, board-level tuning of power-up timing without firmware. |
| Output Type | Active-high push-pull - drives logic-high directly without pull-up resistor; compatible with standard CMOS inputs. |
| Enable Polarity | Active-high ENABLE - simplifies control interface in systems using positive-logic enable signals. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial embedded environments. |
Pinout & Package
MAX6895AALT+T is housed in a 6-pin µDFN package (1.0mm × 1.5mm, 0.5mm pitch), optimized for space-constrained PCB layouts and thermally demanding applications (θJA = 477°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENABLE | Active-high logic-enable input | Drives output true (OUT = high) when asserted; deasserts output within 150ns when disabled - enables hardware-controlled sequencing gating. |
| 2 - GND | Ground reference | Common return path for internal circuitry and external capacitor (CDELAY); must be low-impedance for stable delay timing. |
| 3 - IN | High-impedance monitor input | Accepts voltage from external resistive divider; triggers detection at 0.5V rising edge with 5mV hysteresis - supports monitoring of any rail ≥0.5V. |
| 4 - OUT | Active-high push-pull output | Drives high/low actively; sinks up to 1mA at VCC ≥ 4.5V - directly interfaces with enable pins of DC-DC converters or MOSFET gate drivers. |
| 5 - CDELAY | Capacitor-adjustable delay node | Internal 250nA current source charges external CCDELAY to 1.0V threshold - sets delay from IN rise to OUT assertion with ±10% tolerance. |
| 6 - VCC | Power supply input | 1.5V–5.5V operation; requires local 0.1µF ceramic bypass - powers internal comparator, timer, and output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable threshold down to 0.5V | Enables monitoring of core rails (e.g., 0.8V CPU cores) using high-value resistive dividers with <15nA input leakage. |
| Capacitor-programmable delay | Eliminates need for external timers or microcontroller intervention - delay set by single capacitor (e.g., 100nF → ~400ms). |
| Ultra-low quiescent current | 10µA typical ICC allows permanent connection to always-on rails without compromising battery life in portable equipment. |
| –40°C to +125°C operation | Guaranteed performance across full industrial and automotive ambient range - no derating required up to max temperature. |
| 6-pin µDFN footprint | 1.0mm × 1.5mm area saves >60% board space vs. SOT23; compatible with standard reflow profiles including lead-free. |
Applications
| Power-Supply Sequencing | Microcontroller Reset Control |
|---|---|
|
Use Scenario: Coordinating startup order of multiple DC-DC outputs (e.g., 5V → 3.3V → 1.2V) in FPGA-based industrial controllers. IC Role / Device Role / Timing Role: Supervisor IC that asserts downstream enable signals only after upstream rail exceeds 0.5V and holds for programmable delay. Use Value: Prevents latch-up and bus contention by enforcing strict power-rail ramp timing without software dependency. |
Use Scenario: Generating a clean, glitch-free reset pulse for an ARM Cortex-M7 MCU after main 3.3V rail stabilizes. IC Role / Device Role / Timing Role: Monitors 3.3V rail via resistive divider; asserts active-high reset signal after 200ms delay to ensure clock stability. Use Value: Eliminates need for RC-reset networks with poor temperature stability - guarantees deterministic reset timing across temperature. |
| Automotive ECU Power Management | Portable Medical Instrument Sequencing |
|
Use Scenario: Enabling safety-critical subsystems (e.g., CAN transceiver, sensor ADC) only after main 5V domain reaches regulation. IC Role / Device Role / Timing Role: Acts as hardware-enforced power-good arbiter with AEC-Q100-qualified variants; monitors 5V rail and gates 3.3V LDO enable. Use Value: Meets ASIL-B functional safety requirements by providing fail-safe, analog-based sequencing independent of firmware. |
Use Scenario: Controlling sequential activation of battery-charger IC, display backlight, and Bluetooth radio in handheld diagnostic device. IC Role / Device Role / Timing Role: Uses CDELAY capacitor to stagger enable pulses (e.g., charger first, then radio after 500ms) to limit inrush current. Use Value: Reduces peak input current by >40% versus simultaneous startup - extends battery runtime and avoids brownout resets. |
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 |
|---|---|---|---|
| MAX6896AALT+T | Active-low ENABLE input; otherwise identical pinout, timing, and threshold specs. | Requires inverted enable logic from host controller; suited for systems with open-drain or active-low control buses. | Select when system architecture uses active-low enable signaling - no change to sequencing timing or monitoring accuracy. |
| TLV809EADBZR | Fixed 3.08V threshold; no adjustable delay; SOT-23-3 package; 1.8V–6V supply; 1.6µA ICC. | Limited to single-rail reset generation; lacks sequencing capability and fine-grained delay control. | Choose only for simple, low-cost reset generation - not suitable for multi-rail sequencing or sub-1V monitoring. |
Compared with MAX6896AALT+T, the MAX6895AALT+T offers native compatibility with positive-logic enable paths, while TLV809EADBZR trades sequencing flexibility for ultra-low current and cost - making it viable only for basic reset functions without delay or low-threshold needs.
Availability
MAX6895AALT+T is available at Aetrix Electronics and suitable for power-supply sequencing, microcontroller reset control, and automotive ECU power management requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.
Supply support for MAX6895AALT+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, and computing applications, with emphasis on power management, sensing, and interface solutions.
The MAX6895–MAX6899 family was engineered specifically for compact, reliable power sequencing in space- and power-constrained systems - delivering adjustable monitoring, capacitor-tuned delays, and extended temperature operation in ultra-small packages.
FAQ
What is the exact monitor threshold voltage of the MAX6895AALT+T and how stable is it over temperature?
The MAX6895AALT+T has a fixed monitor threshold of 0.500V with ±1.8% accuracy over the full –40°C to +125°C operating range. This is confirmed in the Electrical Characteristics table (VTH min/max = 0.491V/0.509V). The threshold remains stable due to on-chip bandgap referencing and is unaffected by VCC variations between 1.5V and 5.5V - critical for consistent low-voltage rail supervision.
Does the MAX6895AALT+T require an external pull-up resistor on its OUT pin?
No, the MAX6895AALT+T features an active-high push-pull output, so no external pull-up resistor is needed. Its OUT pin actively drives high (to VCC) and low (to GND), supporting direct connection to enable inputs of DC-DC converters or logic gates. This differs from open-drain variants like MAX6897AALT+T, which do require a pull-up.
How is the delay time calculated for the MAX6895AALT+T, and what capacitor value yields a 100ms delay?
Delay is calculated as tDELAY = (CCDELAY × 4.0 × 10⁶) + 40µs. To achieve ~100ms, solve: 0.100 = (CCDELAY × 4.0 × 10⁶) + 0.00004 → CCDELAY ≈ 24.9nF. A standard 22nF capacitor gives ~88ms; 27nF yields ~108ms. Tolerance of the internal 250nA current source contributes to ±10% delay variation.
Is the MAX6895AALT+T AEC-Q100 qualified?
The MAX6895AALT+T itself is not explicitly listed as AEC-Q100 qualified in the datasheet; qualification applies only to specific variants marked "/V+" (e.g., MAX6895AAZT/V+T). However, the MAX6895AALT+T shares the same die, process (BiCMOS), and –40°C to +125°C specification - making it suitable for automotive applications where full AEC-Q100 certification is not mandated.
What is the maximum voltage the MAX6895AALT+T can safely monitor on its IN pin?
The IN pin is rated for voltages from –0.3V to +6V per Absolute Maximum Ratings. However, because it monitors via a resistive divider referenced to VCC, the actual monitored rail voltage depends on divider ratio. For example, with R1/R2 = 5.6kΩ/1MΩ, a 24V rail produces ~0.5V at IN - allowing safe supervision of rails up to 30V+ using appropriate high-value dividers.
MAX6895AALT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Totem Pole
- 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)
MAX6895AALT+T FAQ
1.How can I place an order for MAX6895AALT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6895AALT+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 MAX6895AALT+T reliable?
The price and inventory of MAX6895AALT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6895AALT+T is usually 5 days.
3.What payment methods are accepted for MAX6895AALT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6895AALT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6895AALT+T?
MAX6895AALT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6895AALT+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 MAX6895AALT+T?
For technical support, including MAX6895AALT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6895AALT+T requirements.
6.How does Aetrix verify that MAX6895AALT+T is sourced from the original manufacturer or authorized distributors?
All MAX6895AALT+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 MAX6895AALT+T meets industry standards.
7.What is the process for return or replacement of MAX6895AALT+T?
All MAX6895AALT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6895AALT+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 MAX6895AALT+T part is unused and in its original packaging.
Return procedure for MAX6895AALT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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