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Analog Devices Inc./Maxim Integrated MAX985EBT+TCNJ
- Part No.:
- MAX985EBT+TCNJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX985EBT+TCNJ.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
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Product details
Overview
MAX985EBT+TCNJ from Maxim Integrated is a micropower, low-voltage, rail-to-rail input/output comparator in UCSP/SC70 package, operating from 2.5V to 5.5V supply, with 1.5µs propagation delay, 100nA quiescent current, and open-drain output - used for precision threshold detection in battery-powered sensor interfaces.
For engineers reviewing the MAX985EBT+TCNJ datasheet, MAX985EBT+TCNJ pinout, MAX985EBT+TCNJ application, or MAX985EBT+TCNJ equivalent, key selection considerations include ultra-low supply current, rail-to-rail I/O capability, SC70-5 package footprint, and guaranteed operation down to 2.5V for energy-constrained systems.
Technical Context
The MAX985EBT+TCNJ implements a single-channel CMOS comparator with internal hysteresis of 4mV (typ), designed for stable switching in noisy environments. It features an open-drain output stage compatible with mixed-voltage logic interfaces up to 5.5V.
Its rail-to-rail input common-mode range extends from VSS – 0.1V to VDD + 0.1V, enabling direct sensing of signals near supply rails. The device is specified over –40°C to +85°C and supports fast response to small overdrive signals (≥10mV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion and dual-cell alkaline systems without level-shifting. |
| Quiescent Current | 100nA (max) at 2.5V - enables multi-year operation in coin-cell–powered wake-up circuits. |
| Propagation Delay | 1.5µs (typ) at 100mV overdrive - ensures timely response in low-latency monitoring loops. |
| Input Offset Voltage | ±3mV (max) - allows accurate threshold detection without external trimming. |
| Hysteresis | 4mV (typ) - suppresses chatter on slow or noisy input edges without external feedback. |
| Output Type | Open-drain - permits wired-OR logic, level translation, and pull-up to higher voltage rail (up to 5.5V). |
Pinout & Package
MAX985EBT+TCNJ is housed in a 5-pin SC70 package (2.0mm × 1.25mm, 0.95mm height), with wettable flanks for automated optical inspection. Pin 1 = IN+, Pin 2 = IN−, Pin 3 = GND, Pin 4 = VDD, Pin 5 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Noninverting Input | Accepts rail-to-rail analog signals; referenced to internal hysteresis threshold. |
| 2 (IN−) | Inverting Input | Accepts reference voltage or feedback signal; differential input voltage determines output state. |
| 3 (GND) | Analog Ground | Return path for input bias current and output sink current; must be low-impedance. |
| 4 (VDD) | Positive Supply | Power source for internal circuitry; bypassing with 0.1µF ceramic capacitor required. |
| 5 (OUT) | Open-Drain Output | Sinks current only; requires external pull-up for logic HIGH; compatible with 1.8V–5.5V logic families. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input | Enables direct interface to sensors or ADC references operating at supply extremes without attenuation. |
| 100nA Quiescent Current | Reduces average power in duty-cycled wake-up detectors to sub-nW levels. |
| Internal 4mV Hysteresis | Eliminates need for external positive feedback resistors in noisy industrial or automotive sensor nodes. |
| SC70-5 Package | Minimizes PCB area (2.5mm²) and thermal mass for space-constrained wearables and IoT edge nodes. |
Applications
| Battery Voltage Monitor | Over-Temperature Alert |
|---|---|
Use Scenario: Detecting when a Li-ion cell drops below 3.0V during discharge in portable medical devices. IC Role / Device Role / Timing Role: Comparator compares cell voltage against precision 3.0V reference; triggers MCU interrupt via open-drain output. Use Value: 100nA supply current extends standby time by >2× versus standard comparators, preserving battery capacity between measurements. | Use Scenario: Monitoring thermistor voltage in motor control PCBs where ambient temperature exceeds 85°C. IC Role / Device Role / Timing Role: Compares thermistor divider output to fixed threshold; drives fault latch via pull-up to 3.3V logic rail. Use Value: Rail-to-rail input captures full thermistor swing across 0–5V range, eliminating input scaling errors. |
| Low-Power Wake-Up Trigger | Window Comparator Input Stage |
Use Scenario: Enabling ultra-low-power microcontrollers to wake on motion-sensor voltage crossing a threshold. IC Role / Device Role / Timing Role: Provides clean, hysteresis-stabilized digital edge to MCU's external interrupt pin. Use Value: 1.5µs propagation delay ensures sub-millisecond wake latency while 100nA draw avoids depleting backup coin cell. | Use Scenario: Front-end conditioning for analog inputs requiring both upper and lower limit detection. IC Role / Device Role / Timing Role: One MAX985EBT+TCNJ serves as high-threshold detector, another as low-threshold detector in dual-comparator configuration. Use Value: Matching input offset (±3mV max) and hysteresis (4mV typ) between units minimizes window skew in precision instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDCKR | Higher quiescent current (300nA), no internal hysteresis, same SC70-5 package. | Requires external hysteresis resistor network; less suitable for noisy sensor nodes without layout margin. | Select when external hysteresis tuning is preferred and 200nA extra supply current is acceptable. |
| MAX9021AXK+T | Same 100nA IQ, but SOT23-5 package (larger footprint), no internal hysteresis. | Needs external feedback for noise immunity; incompatible with ultra-dense layouts requiring SC70 size. | Select when board real estate is not constrained and legacy SOT23 assembly lines are in use. |
Compared with TLV3691IDCKR and MAX9021AXK+T, the MAX985EBT+TCNJ delivers integrated hysteresis and smallest package among micropower comparators, reducing BOM count and PCB area while maintaining identical supply current - critical for miniaturized, long-life sensor endpoints.
Availability
MAX985EBT+TCNJ is available at Aetrix Electronics and suitable for battery voltage monitoring, over-temperature protection, and low-power wake-up trigger applications requiring stable component supply across production lifecycles.
Supply support for MAX985EBT+TCNJ 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 industrial, medical, and communications systems.
The MAX985EBT+TCNJ belongs to Maxim's micropower comparator family, engineered specifically for energy-harvesting and battery-operated endpoints where nanowatt-level static power and rail-to-rail operation are mandatory.
FAQ
What is the maximum operating temperature range for MAX985EBT+TCNJ?
The MAX985EBT+TCNJ is specified for operation from –40°C to +85°C ambient temperature. This range is validated per Maxim's production test flow and supports deployment in industrial control panels and outdoor sensor enclosures without derating. The SC70 package's thermal resistance (θJA ≈ 280°C/W) ensures safe junction temperatures under typical 100nA loading conditions across this range. MAX985EBT+TCNJ maintains guaranteed propagation delay and input offset performance throughout this interval.
Does MAX985EBT+TCNJ require external hysteresis components?
No, MAX985EBT+TCNJ includes internal hysteresis of 4mV (typical), eliminating the need for external positive-feedback resistors in most noise-immune threshold-detection applications. This feature simplifies design, reduces component count, and improves layout robustness in EMI-prone environments. For applications requiring adjustable hysteresis, external feedback can still be added - but MAX985EBT+TCNJ's built-in hysteresis suffices for standard wake-up and fault-detection use cases.
Can MAX985EBT+TCNJ drive a 3.3V logic input directly?
Yes, MAX985EBT+TCNJ's open-drain output can interface directly with 3.3V logic inputs when pulled up to 3.3V via an external resistor. Its output sink capability supports ≥2mA at VOL ≤ 0.4V, meeting standard LVCMOS input thresholds. Since the output is not rail-referenced, it safely operates across mixed-voltage domains - e.g., VDD = 2.5V while pull-up = 3.3V - making MAX985EBT+TCNJ ideal for voltage-level translation in heterogeneous systems.
What is the typical input bias current of MAX985EBT+TCNJ?
The typical input bias current of MAX985EBT+TCNJ is ±1pA at room temperature, with a maximum of ±10pA over temperature. This ultra-low value prevents loading of high-impedance sources such as thermistors, photodiodes, or RC timing networks. When used with a 10MΩ sensor impedance, the resulting voltage error remains below 10µV - negligible for most precision threshold applications. MAX985EBT+TCNJ's CMOS input stage ensures this performance is maintained across its full 2.5V–5.5V supply range.
Is MAX985EBT+TCNJ pin-compatible with other SC70-5 comparators?
MAX985EBT+TCNJ follows the standard SC70-5 pinout (IN+, IN−, GND, VDD, OUT), matching industry conventions used by TLV3691, MAX9021, and LPV7215. However, functional compatibility depends on internal architecture: unlike some alternatives, MAX985EBT+TCNJ integrates hysteresis and guarantees rail-to-rail input operation down to 2.5V. Swapping requires verification of hysteresis needs and supply voltage margins - MAX985EBT+TCNJ is not a drop-in replacement unless those features align.
MAX985EBT+TCNJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 6-WFBGA, WLBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V, ±1.25V ~ 2.75V
- :
- 5mV @ 5.5V
- Voltage - Input Offset (Max):
- 1pA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 24µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 450ns
- Propagation Delay (Max):
- ±3mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 6-WLP
MAX985EBT+TCNJ FAQ
1.How can I place an order for MAX985EBT+TCNJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX985EBT+TCNJ 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 MAX985EBT+TCNJ reliable?
The price and inventory of MAX985EBT+TCNJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX985EBT+TCNJ is usually 5 days.
3.What payment methods are accepted for MAX985EBT+TCNJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX985EBT+TCNJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX985EBT+TCNJ?
MAX985EBT+TCNJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX985EBT+TCNJ 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 MAX985EBT+TCNJ?
For technical support, including MAX985EBT+TCNJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX985EBT+TCNJ requirements.
6.How does Aetrix verify that MAX985EBT+TCNJ is sourced from the original manufacturer or authorized distributors?
All MAX985EBT+TCNJ 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 MAX985EBT+TCNJ meets industry standards.
7.What is the process for return or replacement of MAX985EBT+TCNJ?
All MAX985EBT+TCNJ units undergo pre-shipment inspection (PSI). If there is an issue with MAX985EBT+TCNJ, 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 MAX985EBT+TCNJ part is unused and in its original packaging.
Return procedure for MAX985EBT+TCNJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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