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Analog Devices Inc./Maxim Integrated MAX942ESA+TG002
- Part No.:
- MAX942ESA+TG002
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX942ESA+TG002.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:2,484
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Product details
Overview
MAX942ESA+TG002 from Maxim Integrated is a dual high-speed comparator optimized for 3V/5V single-supply systems, featuring rail-to-rail inputs, 80ns propagation delay (5mV overdrive), 350μA per comparator supply current, and CMOS/TTL-compatible push-pull outputs. It operates from 2.7V to 5.5V and is used in battery-powered threshold detection and line receiver circuits.
For engineers reviewing the MAX942ESA+TG002 datasheet, MAX942ESA+TG002 pinout, MAX942ESA+TG002 application, or MAX942ESA+TG002 equivalent, key selection considerations include input common-mode range beyond rails (–0.2V to V+ + 0.2V), 1mV typical offset voltage, internal hysteresis for noise immunity, output swing within 0.4V of rails, and SO-8 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The MAX942ESA+TG002 implements a bipolar process-based comparator core with rail-to-rail input stage enabling operation with inputs extended 0.2V beyond V+ and GND. Its internal hysteresis eliminates external feedback components and ensures clean switching on slow-moving signals.
It features a current-driven output stage delivering VOH = V+ – 0.2V (at 400μA) and VOL = 0.2V (at 400μA), supporting direct interface to CMOS and TTL logic without pull-up resistors. Propagation delay skew between channels is ≤10ns, and differential propagation delay is guaranteed ≤10ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports both 3V and 5V systems with margin for brownout tolerance |
| Propagation Delay | 80ns (typ) at 5mV overdrive - enables >10MHz signal discrimination in sampling circuits |
| Input Offset Voltage | 1mV (typ) at +25°C - ensures accurate threshold detection down to millivolt-level differentials |
| Rail-to-Rail Input Range | –0.2V to V+ + 0.2V - allows input signals below GND or above V+ without damage or inversion |
| Supply Current per Comparator | 350μA (typ) at 3V - enables ultra-low-power operation in portable and always-on monitoring systems |
| Output Voltage Swing | VOL = 0.2V / VOH = V+ – 0.2V at 400μA - guarantees full logic-level compatibility with 3.3V/5V CMOS and TTL |
| Common-Mode Rejection | 80μV/V (min) - maintains stable trip points across full input voltage range despite supply ripple |
Pinout & Package
MAX942ESA+TG002 is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard 1.27mm pitch and JEDEC MS-012AC outline. Pin 1 is marked with a bevelled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain/push-pull output - drives high/low without external pull-up; compatible with CMOS/TTL |
| 2 | INA− | Inverting input for Comparator A - accepts rail-to-rail voltages; protected against ±20mA continuous fault current |
| 3 | INA+ | Noninverting input for Comparator A - same rail-to-rail range and fault tolerance as INA− |
| 4 | V+ | Positive supply pin - must not exceed +6.5V; requires local 0.1μF ceramic decoupling capacitor |
| 5 | INB+ | Noninverting input for Comparator B - electrically identical to INA+; matched performance with INA+ |
| 6 | INB− | Inverting input for Comparator B - matched offset and bias current to INA−; supports independent dual-channel operation |
| 7 | OUTB | Comparator B output - fully independent of OUTA; ≤10ns skew enables synchronized dual-edge detection |
| 8 | GND | Analog/digital ground reference - must connect to low-impedance ground plane; shared return for both comparators |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input operation | Accepts inputs from –0.2V to V+ + 0.2V - eliminates level-shifting circuitry in mixed-voltage sensor interfaces |
| Internal hysteresis | Fixed ~3mV input-referred hysteresis - prevents oscillation on noisy or slowly varying thresholds without external resistors |
| Low quiescent current | 350μA per comparator at 3V - reduces system power budget by >50% vs. legacy comparators in battery-critical designs |
| CMOS/TTL-compatible outputs | VOH ≥ V+ – 0.2V and VOL ≤ 0.2V at 400μA - directly drives logic gates without interface buffers or level translators |
| Robust input protection | Withstands continuous short-circuit to either rail - simplifies fault-tolerant design in industrial I/O modules |
Applications
| Battery-Powered Threshold Detection | Industrial Line Receiver |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging to trigger cutoff at 4.2V and precharge enable at 3.0V. IC Role / Device Role / Timing Role: Dual comparator performing simultaneous high- and low-threshold comparison with independent outputs. Use Value: 1mV offset and rail-to-rail inputs ensure ±5mV accuracy across 2.7–5.5V supply range, extending battery runtime via precise state-of-charge control. |
Use Scenario: Converting RS-422 differential signals to single-ended logic levels in programmable logic controller (PLC) backplane links. IC Role / Device Role / Timing Role: High-speed comparator acting as line receiver with 80ns response to fast edge transitions. Use Value: 80ns propagation delay and ≤10ns channel skew preserve timing integrity in multi-channel deterministic communication buses. |
| Zero-Crossing Detector | Sampling Circuit Trigger |
|
Use Scenario: Detecting AC mains zero-crossing for phase-controlled dimming in smart lighting drivers. IC Role / Device Role / Timing Role: Comparator comparing sinusoidal input to GND reference with hysteresis to suppress noise-induced false triggers. Use Value: Internal hysteresis eliminates need for external RC networks, reducing BOM count and PCB area while maintaining jitter <100ns. |
Use Scenario: Generating precise sample-enable pulses for ADCs in data acquisition systems using analog ramp generators. IC Role / Device Role / Timing Role: Fast comparator converting analog ramp to digital strobe with minimal propagation delay variation. Use Value: 80ns typ / 200ns max delay over –40°C to +85°C ensures consistent sampling window placement across temperature, critical for time-domain measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Slower (1.3μs delay), higher supply current (500μA), no rail-to-rail inputs, no internal hysteresis | Suitable only for low-speed, non-rail-to-rail DC thresholding; requires external hysteresis resistors | Select when cost is primary constraint and speed/accuracy requirements are relaxed |
| TLV3502IDR | Faster (4.5ns delay), lower offset (0.5mV), rail-to-rail inputs/outputs, but higher supply current (1.2mA) | Better for high-frequency sampling (>100MHz), but unsuitable for battery life–sensitive designs | Select when nanosecond timing precision is required and power budget allows >3× current draw |
Compared with LM393DR and TLV3502IDR, MAX942ESA+TG002 uniquely balances 80ns speed, 350μA efficiency, rail-to-rail operation, and integrated hysteresis-making it optimal for industrial sensors and portable instrumentation where power, precision, and simplicity coexist.
Availability
MAX942ESA+TG002 is available at Aetrix Electronics and suitable for battery-powered systems, industrial line receivers, and precision threshold detectors requiring stable component supply across extended temperature ranges.
Supply support for MAX942ESA+TG002 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 MAX94x family was designed specifically for low-voltage, high-speed comparator applications in space-constrained and power-sensitive systems - emphasizing rail-to-rail operation, sub-100ns timing, and robust fault tolerance.
FAQ
What is the operating temperature range for MAX942ESA+TG002?
The MAX942ESA+TG002 is rated for –40°C to +85°C ambient operation, as confirmed by its "ESA" suffix in the ordering table and electrical characteristics tested across this range. This makes MAX942ESA+TG002 suitable for industrial environments including factory automation and outdoor metering equipment where thermal stability is critical.
Does MAX942ESA+TG002 require external pull-up resistors on its outputs?
No, MAX942ESA+TG002 does not require external pull-up resistors. Its outputs are push-pull (not open-drain) and swing to within 0.2V of V+ and GND at 400μA load, ensuring full CMOS/TTL compatibility. This capability is explicitly specified in the Electrical Characteristics table under VOH and VOL parameters for MAX942ESA+TG002.
Can MAX942ESA+TG002 operate from a 2.7V supply?
Yes, MAX942ESA+TG002 is fully specified to operate from 2.7V to 5.5V, with all key parameters-including 80ns propagation delay, 350μA supply current, and 1mV offset voltage-guaranteed across this range. The datasheet's "Power-Supply Ranges" and "Electrical Characteristics" sections confirm 2.7V as the absolute minimum valid V+ for MAX942ESA+TG002.
Is there internal hysteresis in MAX942ESA+TG002, and what is its value?
Yes, MAX942ESA+TG002 includes fixed internal hysteresis of approximately 3mV input-referred width, derived from the difference between upper and lower trip points (VTRIP+ and VTRIP−) in the Electrical Characteristics table. This eliminates external hysteresis components and ensures reliable switching on slow or noisy signals without user configuration.
What package type is used for MAX942ESA+TG002?
MAX942ESA+TG002 uses an 8-pin SO (Small Outline) package, identified by "ESA" in the part number and confirmed in the Ordering Information table. It follows JEDEC MS-012AC outline, has 1.27mm lead pitch, and is RoHS-compliant - compatible with standard surface-mount reflow processes and automated optical inspection.
MAX942ESA+TG002 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- -
- :
- -
MAX942ESA+TG002 FAQ
1.How can I place an order for MAX942ESA+TG002 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX942ESA+TG002 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 MAX942ESA+TG002 reliable?
The price and inventory of MAX942ESA+TG002 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX942ESA+TG002 is usually 5 days.
3.What payment methods are accepted for MAX942ESA+TG002?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX942ESA+TG002 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX942ESA+TG002?
MAX942ESA+TG002 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX942ESA+TG002 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 MAX942ESA+TG002?
For technical support, including MAX942ESA+TG002 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX942ESA+TG002 requirements.
6.How does Aetrix verify that MAX942ESA+TG002 is sourced from the original manufacturer or authorized distributors?
All MAX942ESA+TG002 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 MAX942ESA+TG002 meets industry standards.
7.What is the process for return or replacement of MAX942ESA+TG002?
All MAX942ESA+TG002 units undergo pre-shipment inspection (PSI). If there is an issue with MAX942ESA+TG002, 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 MAX942ESA+TG002 part is unused and in its original packaging.
Return procedure for MAX942ESA+TG002:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX942ESA+TG002 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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