My Inquiry
My Account
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:4,709
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX9142ESA-T 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. It operates across –40°C to +85°C and is housed in an 8-pin SO package, enabling precise threshold detection in battery-powered instrumentation and line receivers.
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 input common-mode range (–0.2V to VCC + 0.2V), and output swing within 300mV of either rail-critical for low-voltage interface integrity and noise-immune zero-crossing detection.
Technical Context
The MAX9142ESA-T integrates two independent comparators with internal 1.5mV hysteresis to suppress oscillation during slow-moving or noisy input transitions. Its bipolar process enables fast switching while maintaining low input bias current (90–320nA) and high common-mode rejection (80dB min).
Each comparator features rail-to-rail input stage tolerance beyond supply rails (–0.3V to VCC + 0.3V) and outputs that drive to within 300mV of VCC or GND without external pullups. Input pins tolerate continuous short-circuit faults to either rail, supporting robust operation in industrial sensing environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - ensures sub-25MHz signal edge detection timing accuracy |
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into 3.3V and 5V logic domains without level shifting |
| Input Offset Voltage | ≤2.0mV (max, –40°C to +85°C) - enables accurate low-level analog thresholding down to millivolt resolution |
| Input Common-Mode Range | –0.2V to VCC + 0.2V - allows input signals to exceed supply rails, simplifying sensor interfacing |
| Output Voltage Swing | VOL ≤ 0.425V / VOH ≥ VCC – 0.425V at 4mA - guarantees reliable logic-level compatibility with CMOS and TTL loads |
| Supply Current per Comparator | 150μA at 3V - enables ultra-low-power operation in always-on battery monitoring circuits |
| Propagation Delay Skew | ≤2ns between channels - preserves timing alignment in dual-channel sampling or differential signal conditioning |
Pinout & Package
MAX9142ESA-T is packaged in an 8-pin SO (Small Outline) surface-mount package with standard 150mil body width and 0.050" lead pitch. The package is RoHS-compliant, rated for –40°C to +85°C operation, and compatible with automated reflow assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain output - sinks current to GND; requires external pullup for logic-high assertion |
| 2 | INA− | Comparator A inverting input - accepts rail-to-rail analog signals up to VCC + 0.2V or down to –0.2V |
| 3 | INA+ | Comparator A noninverting input - identical voltage range and fault tolerance as INA− |
| 4 | GND | Analog ground reference - must be connected to low-impedance system ground plane for noise immunity |
| 5 | INB+ | Comparator B noninverting input - electrically isolated from Channel A; shares same input specifications |
| 6 | INB− | Comparator B inverting input - supports independent differential pair configuration with INB+ |
| 7 | OUTB | Comparator B open-drain output - functionally identical to OUTA; no internal cross-talk with OUTA |
| 8 | VCC | Positive supply input - powers both comparators; bypass capacitor (0.1μF ceramic) required adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts signals from –0.2V to VCC + 0.2V - eliminates need for input level-shifting circuitry in mixed-supply systems |
| Internal 1.5mV hysteresis | Prevents chatter on slow or noisy inputs without external feedback resistors - reduces component count and layout area |
| CMOS/TTL-compatible outputs | Drives directly into 74HC, 74LVC, and standard TTL logic families - avoids buffer ICs in digital interface paths |
| Continuous short-circuit tolerance | All I/O pins withstand indefinite short to VCC or GND - enhances reliability in field-deployed sensor nodes |
| Low 40ns propagation delay | Supports accurate timing capture of edges in 25MHz digital signals - suitable for clock/data recovery and pulse-width measurement |
Applications
| Line Receivers | Battery-Powered Systems |
|---|---|
|
Use Scenario: Detecting valid data pulses on RS-422/RS-485 differential lines in industrial control networks. IC Role / Device Role / Timing Role: Dual comparator acting as differential line receiver with independent thresholds for true/false polarity detection. Use Value: 40ns delay and 2ns channel skew enable accurate reconstruction of high-speed serial data without inter-symbol interference. |
Use Scenario: Monitoring battery voltage against programmable thresholds in portable medical devices. IC Role / Device Role / Timing Role: Dual threshold detector comparing cell voltage to upper/lower limits for charge/discharge control. Use Value: 150μA per comparator supply current extends runtime in always-on monitoring mode without compromising response speed. |
| Threshold Detectors/Discriminators | Zero-Crossing Detectors |
|
Use Scenario: Converting analog sensor outputs (e.g., temperature, pressure) into clean digital logic levels. IC Role / Device Role / Timing Role: Precision comparator providing hysteresis-stabilized decision points for analog-to-digital conversion front-end. Use Value: ≤2.0mV max offset voltage and rail-to-rail inputs allow detection of sub-millivolt signal excursions with minimal calibration. |
Use Scenario: Synchronizing microcontroller interrupts to AC mains zero crossings in smart energy meters. IC Role / Device Role / Timing Role: High-speed comparator detecting polarity reversal of transformer-coupled AC waveform. Use Value: 40ns propagation delay and internal hysteresis ensure jitter-free triggering even with distorted or noisy sine waves. |
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 rail-to-rail inputs, no internal hysteresis | Suitable only for low-frequency, non-critical threshold detection where speed and precision are secondary | Select LM393DR only when cost is primary constraint and 40ns timing or rail-to-rail operation is unnecessary. |
| TLV3501CDR | Faster (4.5ns), higher supply current (8.5mA), rail-to-rail inputs, no internal hysteresis, requires external feedback | Targeted at RF/ultra-high-speed applications where sub-10ns delay justifies 50× higher power consumption | Choose TLV3501CDR only when system demands nanosecond-level timing and can accommodate active hysteresis design. |
Compared with LM393DR and TLV3501CDR, the MAX9142ESA-T uniquely balances 40ns speed, 150μA ultra-low power, rail-to-rail inputs, and built-in 1.5mV hysteresis-making it optimal for portable, noise-prone, and medium-speed analog interface applications where component count and power efficiency are critical.
Availability
MAX9142ESA-T is available at Aetrix Electronics and suitable for line receivers, battery-powered systems, threshold detectors/discriminators, and zero-crossing detectors requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
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-voltage, high-speed, low-power sensing and interface applications in portable and embedded systems.
FAQ
What is the maximum operating supply voltage for the MAX9142ESA-T?
The MAX9142ESA-T supports a supply voltage range of 2.7V to 5.5V. Absolute maximum rating is +6V between VCC and GND. Operation above 5.5V is not specified and may compromise reliability or parametric performance. For designs using 5V logic rails, the MAX9142ESA-T delivers full functionality with margin, including guaranteed 40ns propagation delay and 150μA supply current per comparator.
Does the MAX9142ESA-T include internal hysteresis, and what is its value?
Yes, the MAX9142ESA-T includes fixed internal hysteresis of 1.5mV, which prevents output oscillation during slow-moving or noisy input transitions. This hysteresis is factory-trimmed and does not require external components. It defines the difference between rising and falling input trip points, ensuring clean switching even with millivolt-level input overdrive-critical for stable operation in threshold detection circuits using the MAX9142ESA-T.
Can the MAX9142ESA-T interface directly with 3.3V CMOS logic?
Yes, the MAX9142ESA-T outputs swing to within 300mV of VCC and GND under 4mA load, delivering VOH ≥ VCC – 0.425V and VOL ≤ 0.425V. At VCC = 3.3V, this yields VOH ≥ 2.875V and VOL ≤ 0.425V-fully compatible with 3.3V CMOS input thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V). No level-shifter or pullup resistor is needed when driving standard 74LVC or similar logic families with the MAX9142ESA-T.
What is the input common-mode voltage range specification for the MAX9142ESA-T?
The MAX9142ESA-T specifies an input common-mode voltage range of –0.2V to VCC + 0.2V, exceeding both supply rails. This rail-to-rail capability allows direct connection of sensors or signals that swing below GND or above VCC-such as transformer-coupled AC waveforms or op-amp outputs biased outside the supply domain-without clamping diodes or level-shifting circuitry. This feature is fully characterized and guaranteed across the –40°C to +85°C temperature range for the MAX9142ESA-T.
Is the MAX9142ESA-T pin-compatible with other devices in the MAX914x family?
No, the MAX9142ESA-T is not pin-compatible with MAX9140, MAX9141, or MAX9144 variants. It uses an 8-pin SO package with dedicated dual-channel pinout (OUTA/INA−/INA+/GND/INB+/INB−/OUTB/VCC). In contrast, MAX9140 is 5-pin, MAX9141 adds SHDN/LE pins, and MAX9144 is 14-pin quad. Pin mapping, package footprint, and functional pin assignments differ across the MAX914x family-designers must use the specific MAX9142ESA-T pinout and land pattern (S8-2, document 21-0041) for successful PCB implementation.
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:
- 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-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
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
