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Analog Devices Inc./Maxim Integrated MAX922ESA+T
- Part No.:
- MAX922ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX922ESA+T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:11,271
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Product details
Overview
MAX922ESA+T from Maxim Integrated is a dual ultra-low-power voltage comparator with no internal reference or hysteresis, operating from +2.5V to +11V (or ±1.25V to ±5.5V), drawing ≤4μA supply current over –40°C to +85°C, featuring TTL/CMOS-compatible outputs that source/sink current and input common-mode range extending to V– and within 1.3V of V+, used in battery-powered threshold detection and window comparator circuits.
For engineers reviewing the MAX922ESA+T datasheet, MAX922ESA+T pinout, MAX922ESA+T application, or MAX922ESA+T equivalent, this page delivers verified electrical parameters, SO-8 package layout, dual-comparator functional context, and real-world design implications for low-quiescent-current sensing systems.
Technical Context
The MAX922ESA+T implements two independent micropower comparators with rail-to-rail input capability (V– to V+ – 1.3V) and output swing from V+ to V–, eliminating need for external level-shifting in dual-supply configurations. Its output stage continuously sources up to 40mA while avoiding crowbar current during transitions, minimizing parasitic supply feedback.
No internal voltage reference or programmable hysteresis is integrated-unlike MAX921/MAX923-so external reference and positive-feedback hysteresis networks must be added per comparator. Input leakage is ≤±5nA over –40°C to +85°C, supporting high-impedance sensing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply or ±1.25V to ±5.5V dual supply - supports direct interfacing with 3V/5V logic and bipolar sensor signals. |
| Quiescent Supply Current | ≤4μA over –40°C to +85°C - enables multi-year operation on coin-cell batteries in always-on monitoring systems. |
| Input Common-Mode Range | V– to (V+ – 1.3V) - allows detection of signals near ground or rail without clamping diodes or level shifters. |
| Output Drive Capability | Sources ≥40mA continuously, sinks ≥5mA - directly drives LEDs, small relays, or logic inputs without external buffers. |
| Propagation Delay | 12μs at 10mV overdrive - provides deterministic timing for precision threshold crossing in low-speed control loops. |
| Input Offset Voltage | ±10mV max - sets minimum detectable differential voltage without calibration in cost-sensitive designs. |
| Input Leakage Current | ±5nA max (–40°C to +85°C) - preserves accuracy in high-source-impedance applications like thermistor or photodiode interfaces. |
Pinout & Package
MAX922ESA+T is housed in an 8-pin SO (Small Outline) package, pin-compatible with industry-standard SOIC-8 footprints and reflow-solderable per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output; sinks and sources current; swings rail-to-rail between V+ and V–. |
| 2 | V+ | Positive supply terminal; accepts +2.5V to +11V (single) or connects to positive rail in dual supply. |
| 3 | INB+ | Noninverting input of comparator B; supports common-mode range down to V–. |
| 4 | INB– | Inverting input of comparator B; matched offset and leakage with INB+ for precision differential sensing. |
| 5 | INA– | Inverting input of comparator A; electrically isolated from INB–, enabling independent signal paths. |
| 6 | INA+ | Noninverting input of comparator A; identical input characteristics to INB+. |
| 7 | V– | Negative supply terminal; connects to ground in single-supply mode or negative rail in dual-supply mode. |
| 8 | OUTA | Comparator A output; functionally identical to OUTB, fully independent output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Operates with inputs from V– to V+ – 1.3V - eliminates need for external biasing in single-supply sensor interfaces. |
| No crowbar output switching | Prevents supply-line glitches during output transitions - improves stability in poorly decoupled or shared-power systems. |
| 40mA continuous output source | Drives LEDs, MOSFET gates, or logic loads directly - reduces bill-of-materials and PCB area vs. buffered solutions. |
| Ultra-low 4μA quiescent current | Enables >10-year battery life in coin-cell–powered IoT endpoints with periodic wake-up sensing. |
| ±1.25V to ±5.5V dual-supply support | Accepts true bipolar supplies - simplifies interface to ±5V op-amp stages or AC-coupled transducer signals. |
Applications
| Battery-Powered Threshold Detector | Window Comparator System |
|---|---|
Use Scenario: Monitoring lithium-ion cell voltage during sleep mode to trigger wake-up at 3.0V undervoltage or 4.2V overvoltage. IC Role / Device Role / Timing Role: Dual comparator independently compares sensed voltage against two reference thresholds generated by resistor dividers. Use Value: Eliminates microcontroller ADC polling, reducing average system current to sub-μA levels while maintaining precise trip points. | Use Scenario: Validating regulated 5V supply integrity in industrial PLC I/O modules before enabling downstream logic. IC Role / Device Role / Timing Role: One comparator detects undervoltage (e.g., <4.75V), the other detects overvoltage (e.g., >5.25V); outputs ANDed to generate "Power Good" signal. Use Value: Provides fail-safe power sequencing without software dependency or timing drift from RC-based supervisors. |
| Oscillator Circuit with Hysteresis | Level-Shifting Interface |
Use Scenario: Building a relaxation oscillator for LED blink timing in portable medical devices using capacitor charge/discharge feedback. IC Role / Device Role / Timing Role: Single comparator (A or B) configured with external positive feedback resistors to set hysteresis band and oscillation frequency. Use Value: Achieves stable, temperature-invariant frequency with only two external resistors and one capacitor - no crystal or timing IC required. | Use Scenario: Converting ±5V analog sensor outputs (e.g., strain gauge bridge) into 0V/5V logic levels for MCU GPIO input. IC Role / Device Role / Timing Role: Comparator A compares signal against 0V reference; comparator B provides inverted output or secondary threshold. Use Value: Enables direct connection of legacy bipolar sensors to modern 3.3V/5V digital systems without level-shifter ICs or discrete transistor stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | No rail-to-rail inputs; input common-mode range excludes V–; 1.5mA typical supply current - 375× higher than MAX922ESA+T. | Not suitable for single-supply sub-1V threshold detection or ultra-low-power battery systems. | Select when cost is primary constraint and supply current >10μA is acceptable. |
| TLV3702IDR | Includes rail-to-rail inputs and 850nA max supply current at 25°C, but only rated for –40°C to +125°C; no dual-supply specification beyond +2.7V to +16V. | Valid for low-power industrial use, but lacks guaranteed dual-supply operation and ±1.25V compatibility. | Select when extended temperature range is critical and bipolar supply operation is not required. |
Compared with LM393DR and TLV3702IDR, the MAX922ESA+T uniquely combines guaranteed dual-supply operation (±1.25V to ±5.5V), rail-to-rail inputs down to V–, and ≤4μA supply current across –40°C to +85°C - making it irreplaceable in precision, ultra-low-power, bipolar-sensing applications.
Availability
MAX922ESA+T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and oscillator circuits requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for MAX922ESA+T 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 interface applications in industrial, automotive, and computing markets.
The MAX921–MAX924 family was engineered specifically for ultra-low-power voltage comparison in space- and energy-constrained systems, emphasizing micropower operation, rail-to-rail input flexibility, and robust output drive without compromising speed or noise performance.
FAQ
What is the maximum supply voltage for MAX922ESA+T in single-supply operation?
The MAX922ESA+T supports a single-supply voltage range of +2.5V to +11V. At +11V, it maintains full functionality including rail-to-rail input operation and 40mA output sourcing. Exceeding +11V risks permanent damage per Absolute Maximum Ratings. For battery-powered designs, operation at +3V or +5V is typical and fully characterized across temperature.
Does MAX922ESA+T include an internal voltage reference?
No, the MAX922ESA+T does not include an internal voltage reference. Unlike MAX921 or MAX923, it lacks a REF pin and bandgap reference circuitry. External references (e.g., precision shunt or series references) or resistor-divider networks must be used to establish threshold voltages for both comparators in the MAX922ESA+T.
Can MAX922ESA+T operate from dual ±5V supplies?
Yes, the MAX922ESA+T is explicitly specified for dual-supply operation from ±1.25V to ±5.5V. With ±5V applied (V+ = +5V, V– = –5V), its inputs accept signals from –5V to +3.7V, and outputs swing fully from +5V to –5V - enabling direct interfacing with bipolar op-amps, AC-coupled sensors, or legacy industrial signal chains without level translation.
What is the guaranteed input offset voltage for MAX922ESA+T over temperature?
The MAX922ESA+T has a maximum input offset voltage of ±10mV over the full operating temperature range of –40°C to +85°C. This value is tested and guaranteed per datasheet Electrical Characteristics tables, ensuring predictable trip-point accuracy in production systems without trimming or calibration.
How does the output stage of MAX922ESA+T prevent supply-line glitches?
The MAX922ESA+T uses a unique output architecture that eliminates crowbar current - the simultaneous conduction of pull-up and pull-down devices during logic transitions. By avoiding this transient short-circuit condition, the MAX922ESA+T prevents voltage spikes on shared supply rails, reducing need for local bypassing and improving stability in dense, multi-IC layouts where supply impedance is non-ideal.
MAX922ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 5µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX922ESA+T FAQ
1.How can I place an order for MAX922ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX922ESA+T 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 MAX922ESA+T reliable?
The price and inventory of MAX922ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX922ESA+T is usually 5 days.
3.What payment methods are accepted for MAX922ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX922ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX922ESA+T?
MAX922ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX922ESA+T 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 MAX922ESA+T?
For technical support, including MAX922ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX922ESA+T requirements.
6.How does Aetrix verify that MAX922ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX922ESA+T 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 MAX922ESA+T meets industry standards.
7.What is the process for return or replacement of MAX922ESA+T?
All MAX922ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX922ESA+T, 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 MAX922ESA+T part is unused and in its original packaging.
Return procedure for MAX922ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX922ESA+T Tags
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