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Analog Devices Inc./Maxim Integrated MAX9142ESA
- Part No.:
- MAX9142ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9142ESA.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,442
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Product details
Overview
The MAX9142ESA from Analog Devices is a dual high-speed comparator optimized for 3V/5V single-supply systems, featuring 40ns propagation delay, 150μA per comparator supply current, rail-to-rail inputs, and CMOS/TTL-compatible outputs - used in line receivers, threshold detectors, and zero-crossing detection circuits.
For engineers reviewing the MAX9142ESA datasheet, MAX9142ESA pinout, MAX9142ESA application, or MAX9142ESA equivalent, key selection criteria include propagation delay skew (≤2ns), input offset voltage (≤2.0mV), rail-to-rail input range (–0.2V to VCC+0.2V), and SO-8 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The MAX9142ESA integrates two independent comparators sharing a common ground and VCC, each with internal 1.5mV hysteresis to prevent oscillation on slow-moving inputs. Its bipolar process enables fast switching while maintaining low input bias current (≤320nA) and high common-mode rejection (≥80dB).
Each comparator features rail-to-rail input stage tolerance (–0.3V to VCC+0.3V), output swing within 300mV of either rail, and full short-circuit fault tolerance on all pins - enabling direct interface to CMOS/TTL without external pullups or level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 40ns at 10mV overdrive - ensures timing-critical decisions in high-speed sampling and line reception. |
| Supply current per comparator | 150μA at 3V - enables battery-powered operation with minimal quiescent power draw. |
| Input offset voltage | ≤2.0mV (max, –40°C to +85°C) - supports accurate threshold detection in precision analog sensing. |
| Input common-mode range | –0.2V to VCC+0.2V - allows inputs to exceed supply rails, simplifying sensor interfacing in single-supply systems. |
| Output voltage swing | VOL ≤ 0.425V / VOH ≥ VCC–0.425V at 4mA - guarantees logic-level compatibility with 3.3V/5V CMOS and TTL loads. |
| Propagation delay skew | ≤2ns between channels - critical for matched timing in dual-channel applications like differential line receivers. |
| Operating supply voltage | 2.7V to 5.5V - supports both 3V and 5V system designs without redesign. |
Pinout & Package
MAX9142ESA is housed in an 8-pin SO (Small Outline) package with exposed pad (SO-8), footprint compatible with industry-standard land pattern S8-2 (Analog Devices doc #21-0041). Pinout validated per official datasheet Figure "MAX9142" top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain output - sinks current when active; requires external pullup for logic-high assertion. |
| 2 | INA− | Comparator A inverting input - accepts rail-to-rail analog signals up to ±0.3V beyond supply rails. |
| 3 | INA+ | Comparator A noninverting input - same rail-to-rail tolerance; differential pair with INA− defines trip point. |
| 4 | GND | Analog/digital ground reference - must connect to low-impedance PCB ground plane for noise immunity. |
| 5 | INB+ | Comparator B noninverting input - electrically isolated from Channel A; enables independent dual-threshold detection. |
| 6 | INB− | Comparator B inverting input - matches INA− specs; supports differential or single-ended configurations. |
| 7 | OUTB | Comparator B open-drain output - identical drive capability and timing to OUTA; no cross-talk with Channel A. |
| 8 | VCC | Positive supply pin - powers both comparators; requires local 0.1μF ceramic decoupling capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts inputs from –0.2V to VCC+0.2V - eliminates need for level-shifting circuitry in 3V/5V sensor interfaces. |
| Internal 1.5mV hysteresis | Prevents output chatter on noisy or slowly varying inputs - removes requirement for external hysteresis resistors. |
| 40ns propagation delay | Enables reliable decision-making at >10MHz signal rates - suitable for high-speed data acquisition and clock recovery. |
| CMOS/TTL-compatible outputs | Swing within 300mV of VCC/GND rails - directly drives standard logic families without buffer stages. |
| Short-circuit tolerant I/O | Withstands continuous fault to VCC or GND - improves system robustness in industrial environments. |
Applications
| Line Receivers | Threshold Detectors |
|---|---|
Use Scenario: Receiving differential or single-ended signals over coaxial or twisted-pair lines in industrial communication systems. IC Role / Device Role / Timing Role: Dual comparator acting as high-speed line receiver with matched propagation delay (≤2ns skew) to preserve signal integrity. Use Value: 40ns response time and rail-to-rail input enable clean digital recovery from attenuated analog line signals without external amplification. | Use Scenario: Detecting voltage crossings relative to programmable or fixed reference levels in battery-powered instrumentation. IC Role / Device Role / Timing Role: Dual independent comparator providing simultaneous high/low threshold detection for window-comparator functionality. Use Value: 150μA per comparator supply current and 2.7V–5.5V operation extend battery life while maintaining sub-2mV offset accuracy across temperature. |
| Zero-Crossing Detectors | 3V/5V System Interfaces |
Use Scenario: Monitoring AC waveforms (e.g., mains, audio, motor phase) to trigger timing events at voltage polarity transitions. IC Role / Device Role / Timing Role: Comparator configured with grounded reference input detecting precise 0V crossing points in real time. Use Value: Rail-to-rail input range and <40ns delay ensure accurate zero-crossing capture even with low-amplitude or distorted waveforms. | Use Scenario: Bridging analog sensors or legacy 5V logic to modern 3.3V microcontrollers in mixed-voltage embedded systems. IC Role / Device Role / Timing Role: Level-adaptive comparator translating variable input voltages into clean CMOS/TTL logic levels. Use Value: Output swing within 300mV of rails and rail-to-rail inputs eliminate external level shifters, reducing BOM count and board space. |
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 propagation delay), higher supply current (500μA), no internal hysteresis, no rail-to-rail inputs. | Suitable only for low-speed, cost-sensitive applications where timing and input range are not critical. | Select LM393DR only if budget constraints outweigh speed, power, and input-range requirements. |
| TLV3502IDR | Faster (4.5ns), lower supply current (120μA), rail-to-rail inputs/outputs, but limited common-mode range (to VCC–0.1V) and no short-circuit tolerance. | Better for ultra-high-speed portable designs, but requires careful layout to avoid latch-up under fault conditions. | Choose TLV3502IDR when nanosecond timing dominates; verify fault resilience via external protection if needed. |
Compared with LM393DR and TLV3502IDR, the MAX9142ESA uniquely balances 40ns speed, 150μA efficiency, rail-to-rail input operation, and robust fault tolerance - making it optimal for industrial line receivers and battery-powered threshold detection where reliability and precision coexist.
Availability
MAX9142ESA is available at Aetrix Electronics and suitable for line receivers, threshold detectors, and zero-crossing detection requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX9142ESA 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX9142ESA belongs to the MAX914x family of single-supply comparators designed specifically for low-power, high-speed decision-making in 3V/5V embedded systems - emphasizing rail-to-rail operation, internal hysteresis, and fault-hardened I/O.
FAQ
What is the maximum operating supply voltage for the MAX9142ESA?
The MAX9142ESA supports an absolute maximum supply voltage of +6V (VCC to GND), with recommended operating range from 2.7V to 5.5V. Operation outside this range risks permanent damage, and functional performance is only guaranteed within the specified 2.7V–5.5V window per the datasheet's Electrical Characteristics table.
Does the MAX9142ESA include internal hysteresis, and what is its value?
Yes, the MAX9142ESA includes fixed internal hysteresis of 1.5mV (input-referred), as confirmed in the Electrical Characteristics table under "Input Hysteresis (VHYST)". This eliminates the need for external hysteresis resistors and ensures clean output switching even with slow-moving or noisy input signals.
Can the MAX9142ESA outputs drive TTL logic directly?
Yes, the MAX9142ESA outputs are CMOS/TTL-compatible: VOL ≤ 0.425V and VOH ≥ VCC–0.425V at 4mA load, meeting TTL VIH/VIL thresholds across the full 2.7V–5.5V supply range. No external pullup resistors are required for TTL interfacing due to rail-swing capability.
What is the operating temperature range for the MAX9142ESA part number?
The MAX9142ESA is rated for the E-grade industrial temperature range of –40°C to +85°C, as explicitly stated in the "Ordering Information" and "Absolute Maximum Ratings" sections of the datasheet. It does not carry A-grade (–40°C to +125°C) or automotive qualification.
Is the MAX9142ESA pin-compatible with other devices in the MAX914x family?
No - the MAX9142ESA (dual comparator, SO-8) shares pinout with MAX9141 and MAX9142 variants in SO-8 and SOT23-8 packages, but differs from MAX9140 (5-pin) and MAX9144 (14-pin). Pin compatibility is confirmed only among MAX9141/MAX9142 in 8-pin SO/SOT23; MAX9142ESA is not pin-compatible with MAX9140 or MAX9144.
MAX9142ESA 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, Push-Pull, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.32µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 300µA
- Current - Quiescent (Max):
- 81.94dB CMRR, 81.94dB PSRR
- CMRR, PSRR (Typ):
- 40ns
- Propagation Delay (Max):
- 1.5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX9142ESA FAQ
1.How can I place an order for MAX9142ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9142ESA 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 MAX9142ESA reliable?
The price and inventory of MAX9142ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9142ESA is usually 5 days.
3.What payment methods are accepted for MAX9142ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9142ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9142ESA?
MAX9142ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9142ESA 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 MAX9142ESA?
For technical support, including MAX9142ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9142ESA requirements.
6.How does Aetrix verify that MAX9142ESA is sourced from the original manufacturer or authorized distributors?
All MAX9142ESA 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 MAX9142ESA meets industry standards.
7.What is the process for return or replacement of MAX9142ESA?
All MAX9142ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX9142ESA, 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 MAX9142ESA part is unused and in its original packaging.
Return procedure for MAX9142ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9142ESA Tags
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LM239DR
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