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Analog Devices Inc./Maxim Integrated MAX922ESA
- Part No.:
- MAX922ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX922ESA.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,669
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Product details
Overview
MAX922ESA from Maxim Integrated is a dual ultra-low-power voltage comparator with no internal reference and no internal 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 an 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 datasheet, MAX922ESA pinout, MAX922ESA application, or MAX922ESA equivalent, key selection considerations include its dual-comparator architecture without integrated reference, SO-8 package compatibility, guaranteed operation across industrial temperature range, and output swing from V+ to V– requiring V– connection to ground for TTL-level single-supply use.
Technical Context
The MAX922ESA implements two independent micropower comparators with rail-to-rail input capability (V– to V+ – 1.3V) and output stages capable of continuous 40mA sourcing and >5mA sinking. Its design eliminates crowbar current during transitions, minimizing supply-line parasitic feedback and improving stability without mandatory bypassing.
No internal voltage reference or programmable hysteresis is included-unlike MAX921/MAX923-so external reference and positive-feedback hysteresis networks must be implemented. Input leakage remains ≤±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 Current | ≤4μA over –40°C to +85°C - enables multi-year operation in coin-cell–powered systems |
| Input Common-Mode Range | V– to (V+ – 1.3V) - allows detection near negative rail and accommodates wide-swing analog inputs |
| Propagation Delay | 12μs at 10mV overdrive - provides deterministic timing for precision threshold crossing in low-speed control loops |
| Output Drive Capability | Continuous 40mA source / >5mA sink - directly drives LEDs, small relays, or logic inputs without external buffers |
| Input Offset Voltage | ±10mV max - sets minimum detectable differential for DC-coupled level sensing |
| Input Leakage Current | ±5nA max over temperature - preserves accuracy in high-impedance divider networks (e.g., battery monitoring) |
Pinout & Package
MAX922ESA is housed in an 8-pin SO (Small Outline) package, pin-compatible with industry-standard SOIC-8 footprints and suitable for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output - sinks and sources current; swings from V+ to V–; requires V– tied to GND for TTL-compatible single-supply operation |
| 2 | V+ | Positive supply input - accepts +2.5V to +11V (single) or connects to positive rail in dual-supply mode |
| 3 | INB+ | Noninverting input of comparator B - high-impedance node (leakage ≤±5nA); accepts voltages from V– to V+ – 1.3V |
| 4 | INB– | Inverting input of comparator B - same voltage range and impedance as INB+ |
| 5 | INA– | Inverting input of comparator A - electrically identical to INB–; enables independent dual-threshold configuration |
| 6 | INA+ | Noninverting input of comparator A - matches INB+ specs; supports separate signal conditioning per channel |
| 7 | V– | Negative supply terminal - connect to GND for single-supply use; defines lower bound of input/output voltage ranges |
| 8 | OUTA | Comparator A output - functionally identical to OUTB; enables concurrent dual-output decision logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | Enables simultaneous evaluation of two thresholds (e.g., under/over-voltage) without inter-channel crosstalk |
| No internal reference or hysteresis | Provides full design flexibility: external reference selection (precision, low-noise, or ratiometric) and custom hysteresis tuning via feedback resistors |
| Rail-to-rail input with 1.3V headroom | Supports direct sensing of signals referenced to V–, including battery voltage monitoring down to near-zero volts |
| Crowbar-free output stage | Eliminates supply-line transients during switching, reducing need for local decoupling and easing PCB layout |
| 40mA continuous output source | Drives indicator LEDs, optocouplers, or MOSFET gates directly-reducing BOM count and board space |
Applications
| Battery Voltage Monitoring | Industrial Threshold Detection |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger low-battery shutdown or overvoltage protection. IC Role / Device Role / Timing Role: Dual comparator compares sensed voltage against upper and lower reference thresholds using external resistor dividers. Use Value: Ultra-low 4μA quiescent current extends standby time; rail-to-rail inputs enable accurate measurement down to 0V relative to system ground. | Use Scenario: Detecting pressure switch closure or temperature sensor crossing preset limits in factory automation controllers. IC Role / Device Role / Timing Role: Provides fast, stable logic-level output for PLC input modules when analog sensor signals exceed defined trip points. Use Value: 12μs propagation delay ensures timely response; 40mA output drives industrial opto-isolators directly without buffer stages. |
| Window Comparator | Power Supply Sequencing |
Use Scenario: Validating that a 5V system rail stays within 4.75V–5.25V tolerance band before enabling downstream logic. IC Role / Device Role / Timing Role: One comparator monitors upper limit (OUTA), the other lower limit (OUTB); AND-gated outputs generate "power good" signal. Use Value: Independent channels avoid shared reference drift; no internal reference ensures precise ratio-metric tracking with external references. | Use Scenario: Enabling FPGA or microcontroller power domains only after core voltage stabilizes, preventing brown-out resets. IC Role / Device Role / Timing Role: Compares delayed RC-sensed voltage against fixed threshold to generate clean enable pulse with controlled rise time. Use Value: Low input leakage (±5nA) prevents RC timing errors; dual outputs allow separate sequencing for multiple rails. |
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 internal reference; 20μA typical supply current; open-collector outputs require pull-up resistors | Lacks sourcing capability - cannot drive LEDs or logic directly without external components | Select when cost sensitivity outweighs drive strength and ultra-low power requirements |
| TLV3702IDR | Includes rail-to-rail inputs and outputs; 1.8μA supply current; built-in ESD protection | Lower supply voltage minimum (1.8V); optimized for portable electronics rather than industrial temp range | Prefer for battery-powered designs below 2.5V or where enhanced ESD robustness is critical |
Compared with LM393DR and TLV3702IDR, MAX922ESA uniquely delivers 40mA sourcing capability and guaranteed –40°C to +85°C operation in a standard SO-8 package, making it optimal for industrial threshold detection where direct load driving and temperature resilience are essential.
Availability
MAX922ESA is available at Aetrix Electronics and suitable for battery-powered systems, industrial threshold detectors, window comparators, and oscillator circuits requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX922ESA 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, interface, and reliability-critical applications.
The MAX921–MAX924 family was engineered specifically for ultra-low-power, single/dual-supply comparator functions in space-constrained, battery-operated, and industrial systems demanding rail-to-rail input operation and robust output drive.
FAQ
What is the maximum supply voltage for MAX922ESA in single-supply operation?
The MAX922ESA supports a single-supply voltage range of +2.5V to +11V. When operated with V– connected to GND, the absolute maximum voltage applied between V+ and GND is +11V. Exceeding this may cause permanent damage, as specified in the Absolute Maximum Ratings table.
Does MAX922ESA include an internal voltage reference?
No, MAX922ESA does not include an internal voltage reference. Unlike MAX921 or MAX923, it is a dual comparator-only device. External reference circuits must be used for threshold generation, allowing design flexibility in reference accuracy, temperature coefficient, and noise performance.
Can MAX922ESA operate from a dual ±5V supply?
Yes, MAX922ESA operates from dual supplies ranging from ±1.25V to ±5.5V. With V+ = +5V and V– = –5V, its outputs swing fully from +5V to –5V, and inputs accept signals from –5V to +3.7V (V+ – 1.3V), enabling direct bipolar signal comparison without level shifting.
What is the guaranteed operating temperature range for MAX922ESA?
The MAX922ESA is rated for operation from –40°C to +85°C, as indicated by the "E" suffix in the part number. This extended temperature range is validated per Maxim's production test flow and supports deployment in industrial control, automotive body electronics, and outdoor instrumentation environments.
How is hysteresis implemented on MAX922ESA?
Hysteresis on MAX922ESA requires external positive feedback using resistors, as the device lacks a HYST pin. A typical configuration connects a resistor from OUT to IN+ (noninverting input), forming a feedback loop that shifts the trip point based on output state-details are provided in Figure 4 of the MAX921–MAX924 datasheet.
MAX922ESA 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:
- Obsolete
- 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 FAQ
1.How can I place an order for MAX922ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX922ESA 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 reliable?
The price and inventory of MAX922ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX922ESA is usually 5 days.
3.What payment methods are accepted for MAX922ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX922ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX922ESA?
MAX922ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX922ESA 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?
For technical support, including MAX922ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX922ESA requirements.
6.How does Aetrix verify that MAX922ESA is sourced from the original manufacturer or authorized distributors?
All MAX922ESA 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 meets industry standards.
7.What is the process for return or replacement of MAX922ESA?
All MAX922ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX922ESA, 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 part is unused and in its original packaging.
Return procedure for MAX922ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX922ESA Tags
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