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Analog Devices Inc./Maxim Integrated MAX9142ESA+T
- Part No.:
- MAX9142ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9142ESA+T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,355
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Product details
Overview
MAX9142ESA+T from Analog Devices is a dual high-speed rail-to-rail input comparator optimized for 3V/5V single-supply systems, delivering 40ns propagation delay, 150μA per comparator supply current, and ±0.2V beyond-rail input common-mode range. It interfaces directly to CMOS/TTL logic in line receivers and threshold detectors without external pullups.
For engineers reviewing the MAX9142ESA+T datasheet, MAX9142ESA+T pinout, MAX9142ESA+T application, or MAX9142ESA+T equivalent, key selection criteria include propagation delay skew (≤2ns), input offset voltage (≤2.0mV), rail-to-rail output swing (within 300mV of rails), and SO-8 package compatibility with industrial temperature range (-40°C to +85°C).
Technical Context
The MAX9142ESA+T implements a bipolar process-based comparator core with fixed 1.5mV internal hysteresis to suppress oscillation during slow input transitions. Its input stage includes back-to-back diodes and 4.1kΩ series resistors for ±20mA fault tolerance on IN+/IN− pins.
The output stage uses current-driven architecture enabling rapid slew rate during transitions and reduced static current at VOH/VOL states. Propagation delay is specified at 10mV overdrive with differential skew ≤2ns between channels, confirming matched timing performance for dual-channel applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - enables reliable sampling of ≥20MHz signals in zero-crossing or clock-recovery circuits |
| Supply Current | 150μA per comparator at 3V - supports battery-powered operation with >1-year runtime in low-duty-cycle sensing nodes |
| Input Offset Voltage | 2.0mV max over -40°C to +85°C - ensures stable threshold detection across industrial temperature range |
| Input Common-Mode Range | -0.2V to VCC + 0.2V - accepts inputs beyond supply rails, simplifying level-shifting in mixed-voltage interfaces |
| Output Voltage Swing | VOL = 0.425V / VOH = VCC - 0.425V at 4mA - guarantees TTL/CMOS logic compatibility without external biasing |
| Input Hysteresis | 1.5mV - eliminates chatter on noisy or slowly varying inputs without external feedback components |
| Power Supply Range | 2.7V to 5.5V - supports direct connection to Li-ion (3.3V/3.6V) and legacy 5V logic rails |
Pinout & Package
MAX9142ESA+T is housed in an 8-pin SO (Small Outline) package with 150mil body width and standard JEDEC MS-012AC footprint. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain compatible output - sinks current to GND; pulls within 300mV of VCC/GND rails |
| 2 | INA− | Comparator A inverting input - accepts voltages from -0.2V to VCC + 0.2V; protected against ±20mA faults |
| 3 | INA+ | Comparator A noninverting input - identical voltage range and protection as INA− |
| 4 | GND | Analog ground reference - must connect to low-impedance PCB ground plane for noise immunity |
| 5 | INB+ | Comparator B noninverting input - electrically isolated from INA±; supports independent signal conditioning |
| 6 | INB− | Comparator B inverting input - matched offset and hysteresis to INA± for consistent dual-channel behavior |
| 7 | OUTB | Comparator B output - independent switching; no crosstalk with OUTA (propagation skew ≤2ns) |
| 8 | VCC | Positive supply - decoupling capacitor (0.1μF ceramic) required adjacent to pin for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Operates with inputs extended 0.2V beyond VCC/GND - eliminates need for external level shifters in multi-supply systems |
| Internal 1.5mV hysteresis | Prevents false triggering on EMI or slow edges - removes requirement for external positive-feedback resistors |
| CMOS/TTL-compatible outputs | Drives standard logic families directly - avoids buffer ICs and reduces BOM count in interface circuits |
| Dual-channel matching | ≤2ns propagation delay skew between comparators - enables precise time-difference measurements in differential sensing |
| Robust input protection | Withstands continuous short-circuit to either rail - enhances reliability in field-deployed equipment with unshielded inputs |
Applications
| Line Receivers | Battery-Powered Systems |
|---|---|
|
Use Scenario: Converting differential or single-ended analog signals from long cables into clean digital logic levels in industrial communication links. IC Role / Device Role / Timing Role: Dual comparator acting as high-speed threshold detector with matched channel timing for differential pair decoding. Use Value: 40ns delay and ≤2ns skew ensure accurate recovery of NRZ data streams up to 20Mbps without intersymbol interference. |
Use Scenario: Monitoring battery voltage against programmable thresholds to trigger low-power mode or shutdown in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator providing simultaneous high/low battery detection with rail-to-rail input capability for full-cell voltage coverage. Use Value: 150μA per comparator supply current extends operational life in coin-cell powered sensors requiring years of standby operation. |
| Threshold Detectors/Discriminators | Zero-Crossing Detectors |
|
Use Scenario: Detecting presence/absence of analog sensor outputs (e.g., thermistor, photodiode) against precision reference voltages in HVAC controls. IC Role / Device Role / Timing Role: Comparator implementing hysteresis-based decision logic to reject noise-induced false triggers near threshold boundaries. Use Value: Fixed 1.5mV internal hysteresis eliminates external resistor networks while maintaining <1% error margin at 3.3V supply. |
Use Scenario: Identifying AC waveform polarity transitions in motor control feedback loops or power metering front-ends. IC Role / Device Role / Timing Role: High-speed comparator converting sine/triangle waveforms into synchronized square waves for timing synchronization. Use Value: 40ns propagation delay enables accurate zero-crossing detection up to 10MHz, supporting high-frequency inverter control. |
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; no rail-to-rail inputs; higher 1mA supply current per comparator | Suitable only for DC or low-frequency (<1kHz) threshold detection; incompatible with fast line receivers | Select MAX9142ESA+T when timing accuracy, low power, or beyond-rail input support is required |
| TLV3502IDR | Faster 4.5ns delay but higher 1.2mA supply current; rail-to-rail inputs/outputs; no internal hysteresis | Requires external hysteresis resistors for noise immunity; less suitable for battery-constrained designs | Choose MAX9142ESA+T for integrated hysteresis and ultra-low quiescent current in portable applications |
Compared with LM393DR and TLV3502IDR, the MAX9142ESA+T uniquely balances 40ns speed, 150μA power, rail-to-rail operation, and built-in 1.5mV hysteresis-enabling compact, robust, and energy-efficient dual-comparator implementations without design compromises.
Availability
MAX9142ESA+T is available at Aetrix Electronics and suitable for line receivers, battery-powered systems, and threshold detectors requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX9142ESA+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
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+T belongs to the MAX914x family of single-supply comparators designed specifically for low-power, high-speed signal conditioning in portable and noise-sensitive applications.
FAQ
What is the operating temperature range for MAX9142ESA+T?
The MAX9142ESA+T is rated for the industrial temperature range of -40°C to +85°C. This specification applies to all electrical parameters in the datasheet unless otherwise noted, and the device uses a bipolar process ensuring stable performance across this full range without derating.
Does MAX9142ESA+T include internal hysteresis, and what is its value?
Yes, the MAX9142ESA+T includes fixed internal hysteresis of 1.5mV. This value is specified in the Electrical Characteristics table and ensures clean output transitions even with slow-moving or noisy input signals, eliminating the need for external hysteresis resistors in most applications.
Can MAX9142ESA+T operate from a 3.3V supply, and what is its supply current at that voltage?
Yes, the MAX9142ESA+T operates from 2.7V to 5.5V, fully supporting 3.3V systems. At VCC = 3V and TA = -40°C to +85°C, its supply current is 150μA per comparator (300μA total), as confirmed in the Electrical Characteristics table under ICC conditions.
What package type and footprint does MAX9142ESA+T use?
The MAX9142ESA+T uses an 8-pin SO (Small Outline) package with JEDEC MS-012AC outline, 150mil body width, and standard 0.050" lead pitch. Its land pattern matches S8-2 package code (document #21-0041), and it is RoHS-compliant with lead-free terminations.
How does the input protection of MAX9142ESA+T handle overvoltage conditions?
The MAX9142ESA+T input pins tolerate continuous short-circuit faults to either VCC or GND. Its protection circuitry includes back-to-back diodes and 4.1kΩ series resistors, limiting differential input voltage to ~1.4V and allowing ±20mA fault current without damage-verified in Absolute Maximum Ratings.
MAX9142ESA+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, 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+T FAQ
1.How can I place an order for MAX9142ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9142ESA+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 MAX9142ESA+T reliable?
The price and inventory of MAX9142ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9142ESA+T is usually 5 days.
3.What payment methods are accepted for MAX9142ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9142ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9142ESA+T?
MAX9142ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9142ESA+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 MAX9142ESA+T?
For technical support, including MAX9142ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9142ESA+T requirements.
6.How does Aetrix verify that MAX9142ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX9142ESA+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 MAX9142ESA+T meets industry standards.
7.What is the process for return or replacement of MAX9142ESA+T?
All MAX9142ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9142ESA+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 MAX9142ESA+T part is unused and in its original packaging.
Return procedure for MAX9142ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9142ESA+T 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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NCX2200GMAZ
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