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Analog Devices Inc./Maxim Integrated MAX992ESA+
- Part No.:
- MAX992ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX992ESA+.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,596
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Product details
Overview
MAX992ESA+ from Maxim Integrated is a dual, micropower, rail-to-rail input/output comparator with open-drain outputs, operating from +2.5V to +5.5V single supply or ±1.25V to ±2.75V dual supplies. It delivers 120ns propagation delay, 48μA per comparator quiescent current, and ±2.5mV internal hysteresis - enabling precise threshold detection in battery-powered sensor interfaces and level translation circuits.
For engineers reviewing the MAX992ESA+ datasheet, MAX992ESA+ pinout, MAX992ESA+ application, or MAX992ESA+ equivalent, key selection criteria include its open-drain output capable of pulling up to 6V above VEE, rail-to-rail input range extending 250mV beyond rails, low input bias current (1pA typ), and guaranteed operation from –40°C to +85°C in the 8-pin SO package.
Technical Context
The MAX992ESA+ implements a dual-channel architecture with independent inverting and non-inverting inputs per comparator, supporting both single- and dual-supply configurations. Its input stage features rail-to-rail common-mode range (VEE – 0.25V to VCC + 0.25V) and ultra-low input bias current (1pA typ), minimizing loading on high-impedance sources like photodiodes or precision voltage dividers.
The open-drain output stage allows flexible level shifting: the output can be pulled to any voltage up to 6V above VEE, making it suitable for interfacing between disparate logic domains (e.g., 5V logic sensing into 3V microcontrollers). Internal hysteresis (±2.5mV) ensures noise-immune switching without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V (single supply); ±1.25V to ±2.75V (dual supply) - supports direct integration into 3V and 5V systems without level-shifting circuitry. |
| Propagation Delay | 120ns at 100mV overdrive (CL = 15pF, VCC = 5V) - enables reliable timing-critical detection in fast-sampling sensor front-ends. |
| Quiescent Supply Current | 48μA per comparator (typ at VCC = 2.7V, TA = +25°C) - extends battery life in portable medical monitors and IoT edge nodes. |
| Input Offset Voltage | ±0.5mV (typ), ±7mV (max over –40°C to +85°C) - ensures accurate threshold setting in precision window comparators and zero-crossing detectors. |
| Input Bias Current | 1.0pA (typ) - preserves signal integrity when driving from megaohm-range sources such as thermistors or capacitive sensors. |
| Output Leakage Current | 1.0μA (max at VOH) - guarantees clean high-impedance state during inactive periods in shared-bus applications. |
| Common-Mode Input Range | VEE – 0.25V to VCC + 0.25V - allows direct sensing of signals slightly beyond supply rails, e.g., detecting overvoltage on a 3.3V rail using 5V-tolerant inputs. |
Pinout & Package
The MAX992ESA+ is housed in an 8-pin SO (Small Outline) package (package code S8-2), with exposed pad not present and RoHS-compliant marking. Pin functions are validated per Maxim's official pin configuration diagram for the MAX992 series in SO format.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Open-drain output of Comparator A - requires external pull-up; supports voltage translation up to 6V above VEE. |
| 2 | VCC | Positive supply terminal - accepts +2.5V to +5.5V; decoupling capacitor must be placed adjacent to this pin. |
| 3 | INA– | Inverting input of Comparator A - rail-to-rail capable; input bias current ≤10nA across full temperature range. |
| 4 | INA+ | Non-inverting input of Comparator A - matched with INA– for low offset; common-mode range extends 250mV beyond rails. |
| 5 | VEE | Negative supply terminal - grounded in single-supply mode; sets lower reference for output voltage swing and input range. |
| 6 | INB+ | Non-inverting input of Comparator B - electrically isolated from INA+; enables independent dual-threshold monitoring. |
| 7 | INB– | Inverting input of Comparator B - identical AC/DC specs to INA–; supports differential or single-ended configurations. |
| 8 | OUTB | Open-drain output of Comparator B - independently controllable; shares no internal connection with OUTA. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with extended common-mode range | Inputs operate from VEE – 0.25V to VCC + 0.25V; outputs swing fully to rails under 8mA load - eliminates need for external clamping or level-shifting networks. |
| Ultra-low quiescent current | 48μA per comparator enables >10-year battery life in always-on smoke detectors and wearable health sensors. |
| Open-drain outputs with 6V absolute max pull-up | Allows direct interface between 5V analog front-end and 1.8V/3.3V digital logic without external MOSFETs or translators. |
| Internal 2.5mV hysteresis | Prevents chatter on slow-moving or noisy inputs (e.g., thermistor outputs), eliminating need for external positive feedback resistors. |
| No phase reversal under overdrive | Guaranteed correct output polarity even when inputs exceed supply rails by up to 0.3V - critical for fault-detection circuits. |
Applications
| Portable Battery-Powered Sensors | Logic-Level Translation |
|---|---|
|
Use Scenario: Monitoring battery voltage and temperature in handheld diagnostic tools using high-impedance divider networks and thermistors. IC Role / Device Role / Timing Role: Dual comparator performing simultaneous low-battery alert (via INA+/INA–) and overtemperature shutdown (via INB+/INB–). Use Value: 48μA total quiescent current (2 × 24μA) minimizes standby drain; rail-to-rail inputs accurately sense near-rail thresholds without external op-amps. |
Use Scenario: Converting 5V UART signals from a legacy MCU to 3.3V logic levels accepted by a modern ARM Cortex-M0+ processor. IC Role / Device Role / Timing Role: MAX992ESA+ configured as dual-level translator - OUTA pulls up to 3.3V for TX path, OUTB handles RTS/CTS handshaking. Use Value: Open-drain outputs tolerate 5V input while sourcing only 3.3V logic - avoids damage to 3.3V I/O pins and eliminates need for discrete MOSFET translators. |
| Zero-Crossing Detection | Threshold-Based Power Sequencing |
|
Use Scenario: Detecting AC line zero crossings in smart energy meters to synchronize sampling and reduce EMI. IC Role / Device Role / Timing Role: Comparator A (INA– grounded, INA+ fed via coupling capacitor) triggers on sine-wave transitions through 0V. Use Value: 120ns propagation delay ensures sub-microsecond timing accuracy; internal hysteresis rejects noise-induced false triggers near zero crossing. |
Use Scenario: Enabling power rails in sequence (e.g., 12V → 5V → 3.3V) only after prior rail reaches regulation, using resistor-divider feedback. IC Role / Device Role / Timing Role: Comparator B monitors 5V rail with reference set by precision divider; asserts enable signal to next regulator upon threshold crossing. Use Value: ±0.5mV input offset ensures <10mV threshold error; rail-to-rail inputs allow direct sensing without op-amp buffering - reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher supply current (500μA vs. 48μA), slower propagation (300ns), no rail-to-rail inputs, no internal hysteresis. | Not suitable for battery-powered or precision rail-sensing applications; requires external hysteresis resistors. | Select LM393DR only for cost-sensitive, non-portable industrial controls where speed and power are secondary. |
| TLV3702IDR | Lower quiescent current (1.3μA), rail-to-rail I/O, but push-pull output (not open-drain); max VCC = 16V, wider temp range (–55°C to +125°C). | Cannot perform level translation beyond VCC; requires external pull-up if open-drain behavior is needed. | Choose TLV3702IDR for ultra-low-power, high-temp environments where level translation is unnecessary and push-pull drive is acceptable. |
Compared with LM393DR and TLV3702IDR, the MAX992ESA+ uniquely balances micropower operation (48μA), high speed (120ns), rail-to-rail inputs, and true open-drain outputs - making it the only option among the three that natively supports both low-power sensing and multi-voltage logic interfacing without added components.
Availability
MAX992ESA+ is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, battery management systems, and embedded communication interfaces requiring stable component supply across long production lifecycles.
Supply support for MAX992ESA+ 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 demanding industrial, automotive, and communications applications.
The MAX992ESA+ belongs to Maxim's high-speed micropower comparator family, engineered specifically for low-voltage, low-power sensing and signal conditioning in space-constrained, battery-operated systems.
FAQ
What is the maximum allowable voltage on the MAX992ESA+ output pin when used with an external pull-up?
The MAX992ESA+ output pin (OUTA or OUTB) can tolerate up to 6V above VEE, regardless of VCC level. For example, with VEE = 0V (single supply), the output may be pulled up to +6V; with VEE = –2.5V (dual supply), it may be pulled to +3.5V. This rating is absolute maximum and must not be exceeded to prevent permanent damage. The MAX992ESA+ datasheet specifies this limit explicitly in the Absolute Maximum Ratings table.
Does the MAX992ESA+ require external hysteresis for reliable operation with noisy input signals?
No - the MAX992ESA+ includes ±2.5mV internal hysteresis, which suppresses output chatter caused by noise or slow-moving inputs. This is sufficient for most threshold-detection applications, including zero-crossing detection and supply monitoring. External hysteresis is only needed when a wider band (e.g., >10mV) is required, and the MAX992ESA+ supports that via standard positive-feedback resistor networks as documented in the Applications Information section of the MAX992ESA+ datasheet.
Can the MAX992ESA+ operate from a single 2.7V supply while driving a 3.3V logic input?
Yes - the MAX992ESA+ operates down to +2.5V supply and its open-drain outputs can be pulled up to any voltage up to 6V above VEE. With VEE = 0V and a 3.3V pull-up resistor, the MAX992ESA+ cleanly drives 3.3V logic inputs while powered only from 2.7V. This capability is intrinsic to the MAX992ESA+ open-drain architecture and is confirmed in the Electrical Characteristics table under "Output Leakage Current" and "OUT Output-Voltage High" test conditions.
What is the input common-mode voltage range specification for the MAX992ESA+?
The MAX992ESA+ input common-mode voltage range is specified as VEE – 0.25V to VCC + 0.25V at TA = +25°C, and VEE to VCC over the full –40°C to +85°C temperature range. This means inputs can safely exceed the supply rails by 250mV under typical conditions - enabling direct sensing of overvoltage events or signals referenced to different grounds. This parameter is measured and guaranteed per the MAX992ESA+ Electrical Characteristics table.
Is the MAX992ESA+ pin-compatible with other devices in the MAX99x family?
The MAX992ESA+ shares the same 8-pin SO (S8-2) package and pinout with MAX991ESA+, MAX991EUA-T, and MAX992EUA-T. However, it is not pin-compatible with push-pull-output variants (e.g., MAX991) in functional contexts requiring sourcing capability - because MAX992ESA+ outputs are open-drain only. The physical pin mapping matches exactly, but system-level compatibility depends on whether the application requires sourcing current or level translation, which only the MAX992ESA+ provides.
MAX992ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Open-Drain, 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):
- 96µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 210ns
- Propagation Delay (Max):
- ±2.5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX992ESA+ FAQ
1.How can I place an order for MAX992ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX992ESA+ 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 MAX992ESA+ reliable?
The price and inventory of MAX992ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX992ESA+ is usually 5 days.
3.What payment methods are accepted for MAX992ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX992ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX992ESA+?
MAX992ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX992ESA+ 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 MAX992ESA+?
For technical support, including MAX992ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX992ESA+ requirements.
6.How does Aetrix verify that MAX992ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX992ESA+ 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 MAX992ESA+ meets industry standards.
7.What is the process for return or replacement of MAX992ESA+?
All MAX992ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX992ESA+, 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 MAX992ESA+ part is unused and in its original packaging.
Return procedure for MAX992ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX992ESA+ Tags
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LM339DR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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NCX2200GMAZ
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