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Analog Devices Inc./Maxim Integrated MAX992EUA+
- Part No.:
- MAX992EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX992EUA+.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:204
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Product details
Overview
MAX992EUA+ 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 portable systems and level translation between mismatched logic domains.
For engineers reviewing the MAX992EUA+ datasheet, MAX992EUA+ pinout, MAX992EUA+ application, or MAX992EUA+ equivalent, key selection criteria include its open-drain output capability (supports pull-up to 6V above VEE), rail-to-rail input range extending 250mV beyond supply rails, low input bias current (1.0pA typ), and operation across –40°C to +85°C industrial temperature range.
Technical Context
The MAX992EUA+ implements two independent comparators sharing a common supply domain, each featuring an open-drain output stage capable of sinking up to 8mA while allowing external pull-up to voltages as high as 6V above VEE. Its input stage supports common-mode voltages from VEE – 0.25V to VCC + 0.25V and exhibits no phase reversal when overdriven.
Internal hysteresis (±2.5mV) ensures clean switching with slow-moving inputs, and the unique output architecture minimizes supply-current surges during transitions - reducing power-supply noise and eliminating need for large decoupling capacitors in sensitive analog sections.
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 both 3V and 5V system integration without level-shifting. |
| Propagation Delay | 120ns at 100mV overdrive (CL = 15pF, VCC = 5V) - enables high-speed zero-crossing and timing-critical threshold detection. |
| Quiescent Current | 48μA per comparator (typ at VCC = 2.7V, TA = +25°C) - extends battery life in always-on portable sensors and wearables. |
| Input Offset Voltage | ±0.5mV (typ), ±7mV (max over –40°C to +85°C) - ensures accurate trip-point stability across temperature without calibration. |
| Input Bias Current | 1.0pA (typ) - permits use with high-impedance sensor sources (e.g., photodiodes, thermistors) without signal degradation. |
| Common-Mode Input Range | VEE – 0.25V to VCC + 0.25V - allows direct interface to signals exceeding supply rails, simplifying front-end design. |
| Output Leakage Current | 1.0μA (max at VOH) - guarantees reliable high-state retention when pulled up to higher voltage domains. |
Pinout & Package
MAX992EUA+ is housed in an 8-pin μMAX® package (U8-1), measuring 3.0mm × 3.0mm × 0.95mm, with exposed pad for thermal enhancement and RoHS-compliant finish.
| 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 | INA− | Inverting input of Comparator A - accepts rail-to-rail common-mode signals including those 250mV beyond VCC/VEE. |
| 3 | INA+ | Noninverting input of Comparator A - matched to INA− for precision differential sensing. |
| 4 | VCC | Positive supply terminal - powers both comparators; must be bypassed with 0.1μF ceramic capacitor near pin. |
| 5 | VEE | Negative supply terminal - grounded in single-supply mode; sets lower reference for dual-supply operation. |
| 6 | INB+ | Noninverting input of Comparator B - electrically isolated from INA±; enables independent dual-threshold monitoring. |
| 7 | INB− | Inverting input of Comparator B - supports same rail-to-rail input range and low bias current as INA±. |
| 8 | OUTB | Open-drain output of Comparator B - independently controllable; shares VCC/VEE but not load or pull-up constraints 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 level-shifters in mixed-voltage systems. |
| Open-drain outputs with 6V absolute max pull-up | OUTA/OUTB tolerate external pull-up to 6V above VEE - enables robust 5V-to-3V or 3V-to-5V logic translation without risk of overvoltage damage. |
| Ultra-low quiescent current (48μA/comparator) | Enables continuous monitoring in energy-constrained applications such as coin-cell–powered IoT nodes and medical patches. |
| 120ns propagation delay with minimal supply glitching | Fast response time combined with low switching-current surge reduces EMI and avoids destabilizing shared power rails in dense PCB layouts. |
| ±2.5mV internal hysteresis | Prevents chatter on noisy or slowly varying inputs (e.g., thermistor outputs, battery voltage monitors), eliminating need for external hysteresis components. |
Applications
| Portable Power Monitoring | Logic-Level Translation |
|---|---|
|
Use Scenario: Real-time monitoring of Li-ion battery 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 warning, the other flags overvoltage condition. Use Value: 48μA total quiescent current preserves battery runtime; rail-to-rail inputs directly sense cell voltage without resistive dividers. |
Use Scenario: Interfacing a 5V microcontroller GPIO to a 3V sensor interface IC in an industrial data logger. IC Role / Device Role / Timing Role: Level translator - MAX992EUA+ OUTA pulled to 3V via 10kΩ resistor while powered from 5V VCC. Use Value: Open-drain output safely isolates 5V domain from 3V inputs; 120ns delay ensures timing-critical control signals remain synchronized. |
| Zero-Crossing Detection | Threshold Discriminator for Sensor Outputs |
|
Use Scenario: Detecting AC line zero crossings in smart energy meters for synchronous sampling and power factor calculation. IC Role / Device Role / Timing Role: Comparator A configured with IN+ tied to AC signal and IN− grounded - generating clean digital edge at each polarity transition. Use Value: No phase reversal under overdrive ensures consistent edge generation even during voltage spikes; ±2.5mV hysteresis rejects noise-induced false triggers. |
Use Scenario: Converting analog output of a MEMS accelerometer into digital motion-trigger event for wake-on-motion functionality. IC Role / Device Role / Timing Role: Comparator B compares sensor output against programmable reference voltage - asserting interrupt when acceleration exceeds threshold. Use Value: 1.0pA input bias current prevents loading of high-impedance sensor output; rail-to-rail input accommodates full dynamic range without attenuation. |
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 quiescent current (500μA vs. 48μA), slower propagation delay (1.3μs min), no rail-to-rail inputs, no guaranteed hysteresis. | Suitable only for non-battery applications with relaxed speed/power requirements; cannot replace MAX992EUA+ in portable designs. | Select LM393DR only if cost is primary constraint and performance margins allow 10× higher supply current and 10× longer delay. |
| TLV3702IDR | Lower quiescent current (3.6μA), rail-to-rail inputs/outputs, but push-pull (not open-drain) outputs - limits level translation capability. | Cannot perform bidirectional logic translation; requires additional external MOSFET or resistor network to emulate open-drain behavior. | Choose TLV3702IDR only when ultra-low power dominates and level translation is handled elsewhere in the signal chain. |
Compared with LM393DR and TLV3702IDR, MAX992EUA+ uniquely balances micropower operation (48μA), high speed (120ns), rail-to-rail I/O, and true open-drain outputs - making it the only option that satisfies all four requirements simultaneously in space-constrained, battery-powered systems requiring voltage-domain interoperability.
Availability
MAX992EUA+ is available at Aetrix Electronics and suitable for portable power monitoring, logic-level translation, zero-crossing detection, and sensor threshold discrimination requiring stable component supply and long-term industrial temperature support.
Supply support for MAX992EUA+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX992EUA+ belongs to Maxim's high-speed micropower comparator family, designed specifically for energy-efficient signal conditioning in battery-operated and mixed-voltage electronic systems where precision, speed, and supply independence are critical.
FAQ
What is the maximum allowable pull-up voltage on MAX992EUA+ outputs?
The MAX992EUA+ open-drain outputs support external pull-up to a maximum of 6V above VEE. When operated in single-supply mode with VEE = 0V, this means the pull-up voltage may reach up to +6V. Exceeding this limit risks permanent damage to the output transistor, as specified in the Absolute Maximum Ratings table. Always verify VEE reference before selecting pull-up voltage.
Does MAX992EUA+ require external hysteresis for reliable operation?
No - MAX992EUA+ includes ±2.5mV internal hysteresis, which is sufficient to prevent output oscillation on slow or noisy input signals such as thermistor outputs or battery voltage ramps. External hysteresis is optional and only needed when wider switching bands (e.g., >50mV) are required for specific noise immunity targets.
Can MAX992EUA+ operate from a single 3.3V supply?
Yes - MAX992EUA+ is fully specified for single-supply operation from +2.5V to +5.5V. At VCC = 3.3V and VEE = 0V, it maintains 120ns propagation delay (typ), 48μA quiescent current (typ), rail-to-rail input range (–0.25V to +3.55V), and open-drain output compatibility with 3.3V logic interfaces.
What is the recommended bypass capacitor for MAX992EUA+?
A 0.1μF ceramic capacitor placed as close as possible to the VCC pin (Pin 4) and VEE pin (Pin 5) is mandatory for stable operation. This minimizes supply impedance at high frequencies and suppresses switching-induced transients. Larger bulk capacitance (e.g., 1–10μF tantalum) may be added nearby for systems with high-current digital loads sharing the same rail.
Is MAX992EUA+ pin-compatible with other devices in the MAX99x family?
MAX992EUA+ shares the same 8-pin μMAX® footprint and pinout with MAX991EUA+, differing only in output stage type (open-drain vs. push-pull). This allows direct substitution in layouts where open-drain functionality is required - but note that push-pull alternatives like MAX991EUA+ cannot replicate the level-translation capability of MAX992EUA+ without circuit modification.
MAX992EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-uMAX/uSOP
MAX992EUA+ FAQ
1.How can I place an order for MAX992EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX992EUA+ 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 MAX992EUA+ reliable?
The price and inventory of MAX992EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX992EUA+ is usually 5 days.
3.What payment methods are accepted for MAX992EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX992EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX992EUA+?
MAX992EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX992EUA+ 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 MAX992EUA+?
For technical support, including MAX992EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX992EUA+ requirements.
6.How does Aetrix verify that MAX992EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX992EUA+ 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 MAX992EUA+ meets industry standards.
7.What is the process for return or replacement of MAX992EUA+?
All MAX992EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX992EUA+, 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 MAX992EUA+ part is unused and in its original packaging.
Return procedure for MAX992EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX992EUA+ Tags
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LM2903DR
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LM339DR
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LM339PWR
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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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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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