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Analog Devices Inc./Maxim Integrated MAX6895AAZT/V+
- Part No.:
- MAX6895AAZT/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX6895AAZT/V+.pdf
- Description:
- ULTRA-SMALL, ADJUSTABLE SEQUENCI
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6895AAZT/V+ from Maxim Integrated is an automotive-grade, ultra-small supervisory circuit with adjustable voltage monitoring (0.5V threshold), capacitor-programmable delay, active-high enable input, and active-high push-pull output. It operates from 1.5V to 5.5V supply, draws only 10µA typical supply current, and is fully specified over –40°C to +125°C for power-supply sequencing in automotive ECUs.
For engineers reviewing the MAX6895AAZT/V+ datasheet, MAX6895AAZT/V+ pinout, MAX6895AAZT/V+ application, or MAX6895AAZT/V+ equivalent, this page delivers verified technical context, exact pin functions, real-world timing behavior, AEC-Q100 qualification status, and validated alternative options for reset and sequencing designs requiring stable, low-power supervision under harsh temperature conditions.
Technical Context
The MAX6895AAZT/V+ implements a fixed 0.5V internal threshold with 5mV hysteresis at the high-impedance IN pin, enabling precise monitoring of voltages as low as 0.5V via external resistive dividers. Its ENABLE pin is active-high with logic thresholds of 0.4V (VIL) and 1.4V (VIH), and it asserts OUT after a capacitor-adjustable delay (tDELAY = CCDELAY × 4.0×10⁶ + 40µs) when both VIN > 0.5V and ENABLE is high.
This device belongs to the MAX6895–MAX6899 family's "A" variant group, meaning its enable-to-output delay is capacitor-adjustable-not fixed-unlike the "P" versions. Its push-pull output drives high to VCC with VOH ≥ 0.8×VCC at 500µA source current and sinks up to 90µA with VOL ≤ 0.3V, supporting direct interface with microcontroller reset inputs without external pullups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - powers directly from common rail voltages including 1.8V, 3.3V, and 5V systems without regulation. |
| Threshold Voltage (IN) | 0.5V ±0.9mV - enables accurate monitoring of low-voltage rails (e.g., 1.2V, 1.8V) using standard resistor dividers. |
| Supply Current (ICC) | 10µA typ - ensures minimal impact on battery-powered or always-on automotive subsystems. |
| Delay Adjustment | Capacitor-programmable (CCDELAY) - supports delays from ~40µs to >1s using 0–5nF external capacitors. |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 0, suitable for under-hood and transmission control modules. |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and provides rail-to-rail logic levels compatible with MCU reset pins. |
| Enable Input Polarity | Active-high - simplifies control logic in systems where enable signals originate from open-drain or level-shifted sources. |
Pinout & Package
MAX6895AAZT/V+ is packaged in a thin SOT23-6 (1.60mm × 2.90mm) RoHS-compliant package with lead-free finish and AEC-Q100 qualification. Pin 1 is ENABLE, Pin 2 is GND, Pin 3 is IN, Pin 4 is OUT, Pin 5 is CDELAY, and Pin 6 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ENABLE (Pin 1) | Active-high logic-enable input | Drives output high after delay when asserted; deasserts output within 150ns when pulled low - enables fast system-level disable independent of monitored voltage. |
| GND (Pin 2) | Ground reference | Common return path for all internal circuits and external capacitor (CDELAY); must be low-impedance for stable delay timing. |
| IN (Pin 3) | High-impedance monitor input | Accepts divided-down rail voltage; 15nA max input leakage allows use of MΩ-range divider resistors without accuracy loss. |
| OUT (Pin 4) | Active-high push-pull output | Drives high to VCC (VOH ≥ 0.8×VCC) or low to GND (VOL ≤ 0.3V); directly interfaces with µP reset inputs without pullup. |
| CDELAY (Pin 5) | Capacitor-adjustable delay node | Internal 250nA current source charges external capacitor to 1.0V threshold; sets IN→OUT and ENABLE→OUT delay per tDELAY = CCDELAY × 4.0×10⁶ + 40µs. |
| VCC (Pin 6) | Power supply input | Accepts 1.5V–5.5V; requires 0.1µF ceramic bypass capacitor near pin to suppress noise-induced false triggering. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8% accurate threshold over temperature | Guarantees ±0.9mV tolerance on 0.5V threshold across –40°C to +125°C - critical for reliable low-voltage rail monitoring in automotive environments. |
| Capacitor-adjustable delay | Enables precise, field-tunable power-up sequencing (e.g., 100ms between 3.3V and 1.2V rails) without firmware or additional ICs. |
| AEC-Q100 qualified | Validated for automotive Grade 0 operation (–40°C to +125°C), including HTOL, ESD, and thermal cycling - meets OEM requirements for safety-critical modules. |
| Ultra-low 10µA supply current | Minimizes quiescent drain on always-on battery rails (e.g., CAN wake-up circuits), extending sleep-mode battery life in ADAS and body controllers. |
| Push-pull output with rail-compatible drive | Eliminates external pullup resistor and ensures clean, fast reset assertion (VOH ≥ 0.8×VCC) compatible with modern low-voltage MCUs (1.8V/3.3V I/O). |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Power Sequencing |
|---|---|
Use Scenario: Monitoring 1.2V core voltage and 3.3V I/O rail during cold cranking, where battery dips to 6V and ambient reaches +125°C. IC Role / Device Role / Timing Role: Supervisory sequencer asserting reset to MCU only after both rails stabilize above threshold with programmable hold-off. Use Value: Prevents MCU lockup due to marginal rail conditions; AEC-Q100 qualification ensures reliability in under-hood deployment. |
Use Scenario: Coordinating startup order of isolated 24V fieldbus, 5V logic, and 3.3V FPGA configuration rails in modular I/O chassis. IC Role / Device Role / Timing Role: Cascadable voltage supervisor providing precise, capacitor-set delays between rail enable signals. Use Value: Eliminates need for discrete RC networks or CPLD-based sequencing logic - reduces BOM count and layout area. |
| Medical Infusion Pump Controller | Telecom Base Station Management |
Use Scenario: Ensuring safe power-up of analog front-end (1.8V), digital controller (3.3V), and motor driver (5V) in battery-backed portable medical equipment. IC Role / Device Role / Timing Role: Dual-threshold supervisor with fail-safe reset generation and low ICC for extended standby operation. Use Value: Meets IEC 60601-1 leakage and reliability requirements; 10µA ICC extends battery runtime between charges. |
Use Scenario: Managing hot-swap sequencing of redundant 12V DC-DC modules and FPGA configuration supplies in 48V telecom infrastructure. IC Role / Device Role / Timing Role: High-accuracy voltage monitor with open-drain compatibility (via MAX6897 alternative) for OR-ing and fault isolation. Use Value: Enables graceful failover during module replacement without system reboot - improves uptime SLA compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory sequencing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6897AAZT/V+ | Same package, AEC-Q100 qualified, but features active-high open-drain output (28V tolerant) instead of push-pull. | Required where output must interface with higher-voltage logic (e.g., 12V/24V systems) or share wired-OR reset bus. | Select MAX6897AAZT/V+ when 28V-tolerant open-drain output is needed; MAX6895AAZT/V+ is preferred for direct µP reset with no pullup. |
| TLV809EADBZR | Single-channel 3.08V fixed-threshold supervisor in SOT-23-3; no adjustable delay, no enable input, no AEC-Q100 rating. | Limited to basic reset generation on fixed 3.3V rails; lacks sequencing capability and automotive qualification. | Choose TLV809EADBZR only for cost-sensitive, non-automotive applications requiring simple fixed-threshold reset without delay or enable control. |
Compared with MAX6897AAZT/V+, MAX6895AAZT/V+ offers simpler µP interface via push-pull output but lacks 28V tolerance; compared with TLV809EADBZR, it adds full sequencing flexibility, AEC-Q100 compliance, and sub-1V monitoring - making it suitable for next-generation automotive and industrial control designs.
Availability
MAX6895AAZT/V+ is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLCs, medical infusion pump controllers, and telecom base station management systems requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6895AAZT/V+ 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 applications in automotive, industrial, and communications markets.
The MAX6895–MAX6899 product line was engineered specifically for ultra-reliable, low-power voltage supervision and power-rail sequencing in space-constrained, high-temperature environments - especially automotive ECUs and safety-critical embedded systems.
FAQ
What is the exact function of the CDELAY pin on the MAX6895AAZT/V+?
The CDELAY pin on the MAX6895AAZT/V+ connects to an external capacitor that sets both the IN-to-OUT delay and ENABLE-to-OUT delay. An internal 250nA current source charges the capacitor to 1.0V; when reached, the output asserts. The delay follows tDELAY = CCDELAY × 4.0×10⁶ + 40µs, allowing precise, field-adjustable timing from microseconds to seconds. This behavior is confirmed in the MAX6895AAZT/V+ datasheet Figure 2 and Electrical Characteristics table.
Is MAX6895AAZT/V+ pin-compatible with MAX6895AAZT+?
Yes, MAX6895AAZT/V+ is pin-compatible with MAX6895AAZT+ - both use the same thin SOT23-6 package with identical pinout (ENABLE, GND, IN, OUT, CDELAY, VCC). The "/V+" suffix denotes AEC-Q100 qualification and automotive temperature range (–40°C to +125°C), while the base part is industrial grade. Electrical specifications and timing behavior are identical; only qualification and screening differ.
Does MAX6895AAZT/V+ require an external pullup resistor on the OUT pin?
No, MAX6895AAZT/V+ does not require an external pullup resistor because it features an active-high push-pull output. The OUT pin actively drives high to VCC (VOH ≥ 0.8×VCC) and low to GND (VOL ≤ 0.3V) - confirmed in the Electrical Characteristics table under "OUT/OUT Output High Voltage" and "Output Low Voltage". This eliminates external components and ensures robust reset signaling to microcontrollers.
What is the minimum input voltage required for MAX6895AAZT/V+ to guarantee correct operation?
MAX6895AAZT/V+ requires VCC ≥ 1.5V to guarantee correct operation and 1.8% threshold accuracy. Below 1.5V, the internal reference degrades; below 1.2V (UVLO threshold), the output state becomes indeterminate. This is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections, and reinforced by Note 3: "When VCC falls below 1.2V, the output cannot be determined."
Can MAX6895AAZT/V+ monitor a 1.0V supply rail directly?
No, MAX6895AAZT/V+ cannot monitor a 1.0V rail directly because its IN pin has a fixed 0.5V threshold. To monitor 1.0V, connect the rail to IN through a resistive divider (e.g., R1 = 1MΩ, R2 = 1MΩ) so that 1.0V at the divider midpoint equals 0.5V at IN. The datasheet provides the formula VMONITOR = VTH × (1 + R1/R2) and confirms ±15nA input leakage enables high-value resistors without accuracy loss.
MAX6895AAZT/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MAX6895AAZT/V+ FAQ
1.How can I place an order for MAX6895AAZT/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6895AAZT/V+ 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 MAX6895AAZT/V+ reliable?
The price and inventory of MAX6895AAZT/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6895AAZT/V+ is usually 5 days.
3.What payment methods are accepted for MAX6895AAZT/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6895AAZT/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6895AAZT/V+?
MAX6895AAZT/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6895AAZT/V+ 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 MAX6895AAZT/V+?
For technical support, including MAX6895AAZT/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6895AAZT/V+ requirements.
6.How does Aetrix verify that MAX6895AAZT/V+ is sourced from the original manufacturer or authorized distributors?
All MAX6895AAZT/V+ 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 MAX6895AAZT/V+ meets industry standards.
7.What is the process for return or replacement of MAX6895AAZT/V+?
All MAX6895AAZT/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6895AAZT/V+, 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 MAX6895AAZT/V+ part is unused and in its original packaging.
Return procedure for MAX6895AAZT/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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