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Analog Devices Inc./Maxim Integrated MAX989ESA+G002
- Part No.:
- MAX989ESA+G002
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX989ESA+G002.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,509
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Product details
Overview
MAX989ESA+G002 from Maxim Integrated is a dual micropower rail-to-rail input/output comparator with push-pull output stage, operating from 2.5V to 5.5V single supply (or ±1.25V to ±2.75V dual supply), consuming only 11µA per comparator, achieving 300ns propagation delay at 100mV overdrive, and supporting 8mA output drive capability - ideal for battery-powered zero-crossing detection and threshold monitoring in portable instrumentation.
For engineers reviewing the MAX989ESA+G002 datasheet, MAX989ESA+G002 pinout, MAX989ESA+G002 application, or MAX989ESA+G002 equivalent, key selection considerations include its dual-channel push-pull architecture, guaranteed -40°C to +85°C operation, rail-to-rail common-mode range extending 250mV beyond rails, and compatibility with space-constrained SOT23-8 layouts requiring minimal bypass capacitance.
Technical Context
The MAX989ESA+G002 implements two independent comparators sharing a common VCC and VEE supply pair, each featuring internal 3mV hysteresis to prevent chatter on slow-moving inputs and an input bias current of 1.0pA typical - enabling high-impedance sensor interfacing without loading error. Its push-pull output stage actively sources and sinks up to 8mA while maintaining rail-to-rail swing, eliminating external pull-up requirements.
This device uses a unique output switching architecture that limits supply-current surges during transitions, resulting in only 80µA total supply current at 1MHz output toggle frequency - a critical advantage for low-noise power domains and extended battery life in portable systems where supply glitching must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply - supports direct integration into both 3V and 5V logic domains without level-shifting. |
| Quiescent Current | 11µA per comparator - enables multi-year operation from coin-cell batteries in always-on sensing nodes. |
| Propagation Delay | 300ns at 100mV overdrive (CL = 15pF) - provides deterministic timing for fast edge detection in signal conditioning paths. |
| Input Offset Voltage | ±5mV max (–40°C to +85°C) - ensures accurate threshold comparison across industrial temperature ranges. |
| Common-Mode Range | Extends 250mV beyond rails (–0.25V to VCC + 0.25V) - allows direct interface to signals exceeding supply rails, e.g., AC-coupled sensors. |
| Output Drive | Sinks/sources 8mA with rail-to-rail swing - drives LEDs, logic inputs, or small MOSFET gates directly without external buffers. |
| PSRR / CMRR | 55dB min PSRR, 52dB min CMRR - maintains stable decision thresholds under noisy or unregulated supply conditions. |
Pinout & Package
MAX989ESA+G002 is housed in an 8-pin SO (small-outline) package with standard 1.27mm pitch, RoHS-compliant lead finish, and JEDEC MS-012AC outline (S8+2). The package supports reflow soldering per J-STD-020 and is rated for 150°C peak temperature.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A push-pull output - actively drives high/low to VCC/VEE; no external pull-up required. |
| 2 | INA− | Comparator A inverting input - accepts signals from –0.25V to VCC + 0.25V; 1.0pA bias current minimizes loading. |
| 3 | INA+ | Comparator A noninverting input - same voltage range and bias as INA−; used for reference or signal routing. |
| 4 | VEE | Negative supply terminal - tied to ground in single-supply operation; establishes lower rail for dual-supply use. |
| 5 | VCC | Positive supply terminal - powers both comparators; PSRR of 55dB suppresses supply noise coupling. |
| 6 | INB+ | Comparator B noninverting input - electrically identical to INA+; enables dual-threshold or window configurations. |
| 7 | INB− | Comparator B inverting input - matches INA− specs; supports independent second comparison channel. |
| 8 | OUTB | Comparator B push-pull output - fully independent of OUTA; supports asynchronous dual-event detection. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Inputs operate –0.25V to VCC + 0.25V; outputs swing within 200mV of rails at 8mA load - eliminates level-shifting for most analog front-ends. |
| Micropower operation | 11µA per comparator quiescent current - reduces system standby power by >90% vs. legacy comparators (e.g., LM393: 100µA). |
| No phase reversal | Guaranteed correct output polarity even when inputs exceed supply rails by 250mV - prevents false triggering in overvoltage fault detection. |
| Internal hysteresis | ±3mV built-in hysteresis - suppresses noise-induced oscillation without external feedback resistors in basic threshold applications. |
| Low-glitch switching | Supply current increases only ~70µA at 1MHz toggle - avoids need for local bulk capacitors in sensitive analog power domains. |
| Wide temp range | Specified from –40°C to +85°C - validated for automotive cabin, industrial control, and outdoor IoT deployments. |
Applications
| Portable Battery Monitoring | Industrial Threshold Detection |
|---|---|
|
Use Scenario: Monitoring lithium-ion cell voltage during charge/discharge cycles in handheld medical devices. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel triggers low-voltage cutoff, the other flags overvoltage protection. Use Value: 11µA quiescent current extends battery runtime; rail-to-rail inputs directly sense 0–4.2V cell range without resistor dividers. |
Use Scenario: Detecting pressure transducer output crossing preset safety thresholds in factory automation PLCs. IC Role / Device Role / Timing Role: Comparator A monitors upper limit (e.g., 4.5V), Comparator B checks lower limit (e.g., 0.5V) - generating independent fault flags. Use Value: ±5mV offset voltage ensures <1% threshold error across temperature; 300ns delay enables real-time response to rapid pressure spikes. |
| Zero-Crossing Detection | Logic-Level Translation |
|
Use Scenario: Converting AC line voltage (120V RMS) to clean digital zero-cross pulses for TRIAC dimmer control in smart lighting. IC Role / Device Role / Timing Role: Single comparator (INA+/INA−) biased at 0V reference - detects polarity reversals in scaled-down AC waveform. Use Value: No phase reversal at rail-overdriven inputs prevents false zero-crossings; 250mV beyond-rail CMR accommodates transformer leakage offsets. |
Use Scenario: Interfacing 5V microcontroller GPIO to 3.3V ADC input in mixed-voltage data acquisition modules. IC Role / Device Role / Timing Role: Not applicable - MAX989ESA+G002 has push-pull output and is not used for level translation; MAX986/MAX990 variants are selected instead. Use Value: Push-pull architecture eliminates need for external pull-up, reducing BOM count and PCB area versus open-drain alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Open-drain output, 100µA supply current, no rail-to-rail inputs, 1.5V min supply. | Requires external pull-up; unsuitable for sub-2.5V systems or high-impedance sensor interfaces. | Select only if cost is primary constraint and 11µA quiescent current is unnecessary. |
| TLV3702IDR | Push-pull output, 1.6µA supply current, rail-to-rail inputs/outputs, 1.8V–5.5V supply. | Lower power but slower (1.5µs delay); lacks guaranteed hysteresis and fails phase-reversal spec at rail overdrive. | Prefer for ultra-low-power wake-up circuits where speed <300ns is not required. |
Compared with LM393DR and TLV3702IDR, MAX989ESA+G002 uniquely balances micropower (11µA), speed (300ns), rail-to-rail operation, and robustness against overdriven inputs - making it optimal for precision, battery-sensitive dual-threshold detection where layout area and supply integrity are constrained.
Availability
MAX989ESA+G002 is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and battery management systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX989ESA+G002 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 power, sensing, and connectivity applications - with emphasis on performance-per-watt and reliability in harsh environments.
The MAX985/MAX989 family was engineered specifically for micropower, rail-to-rail comparator applications in space- and energy-constrained systems - delivering low supply current without sacrificing speed, accuracy, or input/output flexibility.
FAQ
What is the maximum capacitive load the MAX989ESA+G002 can drive while maintaining 300ns propagation delay?
The MAX989ESA+G002 maintains ≤300ns propagation delay (tPD+) with 100mV overdrive when driving a 15pF load at VCC = 5V. At CL = 50pF, delay increases to 450ns; at CL = 200pF, it reaches 550ns. For timing-critical designs, keep trace capacitance and downstream input capacitance below 15pF or account for delay degradation in system timing budgets. The MAX989ESA+G002 datasheet specifies these values in the Electrical Characteristics table under tPD+ conditions.
Does the MAX989ESA+G002 require external hysteresis for reliable operation with noisy input signals?
No - the MAX989ESA+G002 includes ±3mV internal hysteresis, sufficient to suppress chatter from typical PCB noise (<10mV pk-pk) in most threshold-detection applications. External hysteresis is only needed when wider bands (e.g., >10mV) are required for immunity to large-amplitude interference. The MAX989ESA+G002's internal hysteresis is factory-trimmed and temperature-stable, eliminating resistor matching errors inherent in external networks.
Can the MAX989ESA+G002 operate from a single 2.7V supply while driving a 5mA load?
Yes - the MAX989ESA+G002 is fully specified from 2.5V to 5.5V single supply and guarantees rail-to-rail output swing sinking or sourcing up to 8mA at VCC = 2.7V. At ISINK = 5mA, VOL is ≤400mV (max), ensuring clean logic-low levels for 2.7V CMOS inputs. This capability is confirmed in the Electrical Characteristics table under "OUT Output Voltage Low" with VCC = 2.7V, ISINK = 3.5mA and 8mA conditions.
Is the MAX989ESA+G002 pin-compatible with other devices in the MAX985/MAX989 family?
No - the MAX989ESA+G002 uses an 8-pin SO package with pinout optimized for dual comparators (OUTA, INA−, INA+, VEE, VCC, INB+, INB−, OUTB), whereas MAX985 variants use 5-pin SC70/SOT23 and MAX993 uses 14-pin TSSOP/SO. Pin mapping differs across packages; board redesign is required when substituting between families. Always verify pin functions using the "Pin/Bump Description" table in the MAX989ESA+G002 datasheet before layout reuse.
What is the absolute maximum rating for output voltage relative to VEE on the MAX989ESA+G002?
The MAX989ESA+G002 output pins (OUTA and OUTB) have an absolute maximum rating of –0.3V to (VCC + 0.3V) relative to VEE. This means when VEE = 0V and VCC = 5.5V, outputs must remain within –0.3V to +5.8V. Exceeding this range risks permanent damage. This specification is explicitly listed in the Absolute Maximum Ratings table and applies to both sourcing and sinking states of the push-pull output stage in the MAX989ESA+G002.
MAX989ESA+G002 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
MAX989ESA+G002 FAQ
1.How can I place an order for MAX989ESA+G002 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX989ESA+G002 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 MAX989ESA+G002 reliable?
The price and inventory of MAX989ESA+G002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX989ESA+G002 is usually 5 days.
3.What payment methods are accepted for MAX989ESA+G002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX989ESA+G002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX989ESA+G002?
MAX989ESA+G002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX989ESA+G002 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 MAX989ESA+G002?
For technical support, including MAX989ESA+G002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX989ESA+G002 requirements.
6.How does Aetrix verify that MAX989ESA+G002 is sourced from the original manufacturer or authorized distributors?
All MAX989ESA+G002 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 MAX989ESA+G002 meets industry standards.
7.What is the process for return or replacement of MAX989ESA+G002?
All MAX989ESA+G002 units undergo pre-shipment inspection (PSI). If there is an issue with MAX989ESA+G002, 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 MAX989ESA+G002 part is unused and in its original packaging.
Return procedure for MAX989ESA+G002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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