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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:162
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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 threshold detection and line receiver circuits where low power and fast response are critical.
For engineers reviewing the MAX9142ESA+ datasheet, MAX9142ESA+ pinout, MAX9142ESA+ application, or MAX9142ESA+ equivalent, key selection criteria include input offset voltage (≤2.0mV), output swing within 300mV of rails, differential propagation delay (≤2ns), operating temperature range (–40°C to +85°C), and SO-8 package compatibility with standard PCB footprints.
Technical Context
The MAX9142ESA+ implements a bipolar process-based comparator core with internal 1.5mV hysteresis to suppress oscillation during slow input transitions. Its rail-to-rail input stage accepts common-mode voltages from –0.2V to VCC + 0.2V, and its current-driven output stage delivers VOH ≥ VCC – 0.3V and VOL ≤ 0.425V at 4mA load.
Designed for dual-channel operation without cross-talk, it specifies propagation delay skew ≤2ns and differential propagation delay ≤2ns between channels. It lacks latch or shutdown functions - distinguishing it from the MAX9141 - and operates across 2.7V to 5.5V supply range with PSRR ≥750 µV/V and CMRR ≥800 µV/V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - enables sampling up to ~12.5MHz with deterministic timing margin. |
| Supply Current | 150μA per comparator at 3V - supports battery-powered operation with <300μA total quiescent draw. |
| Input Offset Voltage | ≤2.0mV (max, –40°C to +85°C) - ensures accurate threshold detection down to millivolt-level signals. |
| Input Common-Mode Range | –0.2V to VCC + 0.2V - allows direct interface to sensors or DACs operating beyond supply rails. |
| Output Voltage Swing | VOL ≤ 0.425V / VOH ≥ VCC – 0.3V at 4mA - guarantees clean logic-level transitions into CMOS/TTL loads without pull-ups. |
| Operating Supply Range | 2.7V to 5.5V - supports both 3.3V and 5V system domains without level-shifting. |
| Propagation Delay Skew | ≤2ns between channels - preserves timing alignment in dual-signal conditioning paths. |
Pinout & Package
The MAX9142ESA+ is housed in an 8-pin SO (Small Outline) package with standard 150mil width and 1.27mm pitch, compatible with IPC-7351B SOIC-8 land pattern S8-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Digital output of comparator A - open-drain capable, pulls to within 300mV of VCC or GND. |
| 2 | INA− | Inverting input of comparator A - accepts rail-to-rail common-mode voltage; protected against ±20mA fault current. |
| 3 | INA+ | Noninverting input of comparator A - matched to INA− for low offset and drift; supports differential input configurations. |
| 4 | GND | Analog/digital ground reference - must be connected to low-impedance system ground plane for noise immunity. |
| 5 | INB+ | Noninverting input of comparator B - electrically isolated from channel A; enables independent dual-threshold sensing. |
| 6 | INB− | Inverting input of comparator B - identical electrical specs to INA−; supports anti-phase or window-comparator topologies. |
| 7 | OUTB | Digital output of comparator B - fully independent output stage; no shared drive path with OUTA. |
| 8 | VCC | Positive supply pin - requires local 0.1μF ceramic decoupling placed within 2mm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct connection to low-voltage sensors or DAC outputs without external level-shifting circuitry. |
| Internal 1.5mV hysteresis | Eliminates need for external positive feedback resistors while ensuring bounce-free switching on noisy or slow-moving inputs. |
| CMOS/TTL-compatible outputs | Drives standard logic families directly - no external pull-up required due to active pull-to-rail output architecture. |
| Low 500μV typical offset | Reduces false triggering in precision zero-crossing or low-amplitude signal discrimination applications. |
| Continuous short-circuit tolerance | Withstands indefinite shorting of any input or output to VCC or GND - enhances 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 interfaces. IC Role / Device Role / Timing Role: Dual comparator acting as high-speed signal conditioner and logic-level translator for RS-485 or custom bus receivers. Use Value: 40ns delay and rail-to-rail input allow accurate recovery of fast-edged line signals even with ground offset or supply variation. | Use Scenario: Detecting when analog sensor outputs cross programmable upper/lower thresholds in battery-powered monitoring systems. IC Role / Device Role / Timing Role: Dual-channel comparator implementing window or over/under-voltage detection with independent trip points. Use Value: 150μA per channel and 2.7–5.5V operation enable multi-threshold sensing in energy-constrained IoT nodes. |
| Battery-Powered Systems | Zero-Crossing Detectors |
Use Scenario: Power management in portable medical devices or handheld test equipment requiring ultra-low standby current. IC Role / Device Role / Timing Role: Comparator monitoring battery voltage or charger status while contributing minimal load to the power rail. Use Value: Sub-300μA total supply current and rail-to-rail input let it operate directly from Li-ion or coin-cell sources without regulation. | Use Scenario: AC mains synchronization in inverters, motor controllers, or power supplies requiring precise phase alignment. IC Role / Device Role / Timing Role: High-speed comparator detecting polarity reversal of sinusoidal or square-wave inputs with minimal jitter. Use Value: 40ns propagation delay and <2ns channel skew ensure consistent zero-crossing timing across dual-phase or redundant sensing paths. |
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-speed, cost-sensitive DC threshold detection - not viable for line receivers or zero-crossing above 10kHz. | Select MAX9142ESA+ when speed, low power, or rail-to-rail input capability is required; LM393DR only where budget dominates and performance margins are wide. |
| TLV3502IDR | Faster (4.5ns), lower offset (1.5mV typ), but higher supply current (1.2mA), no internal hysteresis, and requires external hysteresis network. | Better for ultra-high-speed sampling but increases BOM count and layout complexity; less robust in noisy environments without added components. | Choose TLV3502IDR only if sub-10ns timing is mandatory and board space allows hysteresis resistors; MAX9142ESA+ offers better integration and power efficiency for most 3V/5V embedded systems. |
Compared with LM393DR, the MAX9142ESA+ delivers 32× faster response and 3× lower power; versus TLV3502IDR, it trades 10× speed reduction for integrated hysteresis, 8× lower quiescent current, and simplified layout - making it optimal for reliable, low-power, medium-speed dual-comparator functions.
Availability
MAX9142ESA+ is available at Aetrix Electronics and suitable for line receivers, battery-powered systems, threshold detectors, and zero-crossing detectors requiring stable component supply across industrial, medical, and test equipment programs.
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 signal conditioning in portable and 3V/5V embedded systems - emphasizing rail-to-rail operation, internal hysteresis, and robust I/O protection.
FAQ
What is the maximum supply voltage rating for the MAX9142ESA+?
The MAX9142ESA+ has an absolute maximum supply voltage (VCC to GND) of +6V. However, its specified operating range is 2.7V to 5.5V. Operating continuously above 5.5V risks exceeding functional specifications and may compromise long-term reliability, even if within absolute maximum limits. Always design within the 2.7V–5.5V range for guaranteed performance of the MAX9142ESA+.
Does the MAX9142ESA+ include internal hysteresis, and what is its value?
Yes, the MAX9142ESA+ includes fixed internal hysteresis of 1.5mV (input-referred), which eliminates the need for external hysteresis resistors in most applications. This hysteresis ensures clean, bounce-free output transitions even with slow-moving or noisy input signals - a confirmed specification documented in the Electrical Characteristics table of the MAX9142ESA+ datasheet.
Can the MAX9142ESA+ drive TTL logic directly without pull-up resistors?
Yes, the MAX9142ESA+ can drive TTL logic directly without external pull-up resistors. Its outputs swing to within 0.3V of VCC (VOH ≥ VCC – 0.3V) and to ≤0.425V (VOL) at 4mA sink/source, meeting TTL VIH and VIL thresholds across its full operating temperature range. This rail-swing capability is a defined feature of the MAX9142ESA+ and verified in production testing.
Is the MAX9142ESA+ pin-compatible with the MAX9141ESA+ or MAX9144ESD+?
No, the MAX9142ESA+ is not pin-compatible with the MAX9141ESA+ or MAX9144ESD+. The MAX9142ESA+ (dual comparator, SO-8) uses pins 1–3–4–5–6–7–8 for OUTA/INA−/INA+/GND/INB+/INB−/OUTB/VCC. The MAX9141ESA+ includes SHDN and LE pins (absent in MAX9142ESA+), and the MAX9144ESD+ is a quad device in 14-pin SO. Pinouts differ fundamentally - confirmed by the Pin Description table in the MAX9142ESA+ datasheet.
What is the operating temperature range specified for the MAX9142ESA+?
The MAX9142ESA+ is specified for the E-grade industrial temperature range of –40°C to +85°C. This rating is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections of the official datasheet and applies to all SO-packaged variants including the MAX9142ESA+. No automotive (A-grade) or extended-range version exists for this specific part number.
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:
- 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+ 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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