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Analog Devices Inc./Maxim Integrated MAX49140AXK/V+T
- Part No.:
- MAX49140AXK/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX49140AXK/V+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,101
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Product details
Overview
MAX49140AXK/V+T from Maxim Integrated is a single high-speed, rail-to-rail input comparator optimized for 3V/5V automotive systems. It delivers 30ns propagation delay, 100μA supply current (typ), and 500μV offset voltage, with output swing within 300mV of either rail-enabling direct CMOS/TTL interfacing in battery-powered line receivers and threshold detectors.
For engineers reviewing the MAX49140AXK/V+T datasheet, MAX49140AXK/V+T pinout, MAX49140AXK/V+T application, or MAX49140AXK/V+T equivalent, key selection criteria include AEC-Q100 qualification, -40°C to +125°C operation, internal 1.2mV hysteresis, SC70-5 package footprint, and fault-tolerant input/output pins capable of continuous short-circuit to either rail.
Technical Context
The MAX49140AXK/V+T employs a current-driven output stage that delivers rapid slew rate during transitions and reduces quiescent current after settling-enabling low-power, high-speed switching. Its input stage integrates back-to-back diodes and 1kΩ series resistors to clamp differential inputs up to ±1.4V while maintaining precision bias current below 500nA (typ) at +25°C.
Internal hysteresis of 1.2mV eliminates external feedback components and prevents oscillation near trip points, while rail-to-rail input common-mode range (0V to VDD) and output swing (VDD – 0.3V / 0.3V) support direct interfacing across 3V and 5V logic families without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 30ns at 10mV overdrive - enables sub-33MHz signal sampling in zero-crossing or timing-critical detection circuits. |
| Supply Current | 100μA typical at 3V - supports multi-year battery life in always-on automotive sensor monitoring systems. |
| Input Offset Voltage | 500μV max - ensures accurate threshold discrimination down to millivolt-level analog signals. |
| Input Common-Mode Range | 0V to VDD - allows direct connection to sensors or rails without external biasing networks. |
| Output Swing | VDD – 0.3V / 0.3V - guarantees TTL/CMOS-compatible logic levels without pull-up resistors. |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive environments per AEC-Q100 Grade 0. |
| Input Hysteresis | 1.2mV - suppresses noise-induced chatter on slow-moving inputs without external resistor networks. |
Pinout & Package
The MAX49140AXK/V+T is housed in a 5-pin SC70 package (package code X5+1C, outline 21-0076), measuring 2.0mm × 1.25mm × 0.95mm with 0.65mm pitch - compatible with standard SMT reflow profiles including +260°C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator Output | Push-pull output capable of sourcing/sinking 4mA; swings within 300mV of VDD or GND without external components. |
| 2 (GND) | Ground Reference | Primary return path for supply and signal currents; requires low-inductance connection to solid ground plane. |
| 3 (IN+) | Noninverting Input | Rail-to-rail capable input; protected by internal 1kΩ resistor and back-to-back diode to IN-. |
| 4 (IN-) | Inverting Input | Rail-to-rail capable input; symmetric protection and biasing as IN+; differential input tolerance ±1.4V. |
| 5 (VDD) | Positive Supply | Accepts 2.7V–5.5V; requires local 0.1μF ceramic decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified for automotive applications per Grade 0 (-40°C to +125°C), including stress testing for reliability in harsh environments. |
| Rail-to-Rail Inputs & Outputs | Enables direct interface with sensors, microcontrollers, and logic families across full supply range-no external level-shifting needed. |
| Internal 1.2mV Hysteresis | Eliminates need for external positive feedback resistors while ensuring clean, chatter-free switching on noisy or slowly varying signals. |
| Fault-Tolerant I/O Pins | All input and output pins withstand continuous short-circuit to VDD or GND-critical for robustness in automotive wiring harnesses. |
| Low 100μA Quiescent Current | Reduces system power budget in always-on modules such as battery monitoring or wake-up comparators. |
Applications
| Car Battery-Powered Systems | Line Receivers |
|---|---|
|
Use Scenario: Monitoring 12V battery voltage against programmable thresholds to trigger low-battery alerts or load shedding in infotainment ECUs. IC Role / Device Role / Timing Role: High-accuracy, low-power comparator detecting crossing of digitally set reference voltages. Use Value: 500μV offset and internal hysteresis ensure stable triggering despite ripple and EMI on vehicle power rails. |
Use Scenario: Converting differential coaxial analog signals (e.g., from radar or camera sensors) into clean digital logic for MCU input. IC Role / Device Role / Timing Role: Single-ended line receiver with fast 30ns response and rail-to-rail output swing. Use Value: Direct compatibility with 3.3V/5V logic eliminates level-shifter ICs and reduces BOM count and board area. |
| Threshold Detectors/Discriminators | Zero-Crossing Detectors |
|
Use Scenario: Detecting engine coolant temperature thresholds using NTC thermistor divider outputs in HVAC control modules. IC Role / Device Role / Timing Role: Precision comparator with fixed hysteresis rejecting thermal noise and sensor drift. Use Value: 1.2mV hysteresis prevents false toggling near trip point; rail-to-rail inputs accept full 0–5V sensor range. |
Use Scenario: Identifying AC waveform zero crossings in motor control or lighting dimming circuits powered from 3V/5V supplies. IC Role / Device Role / Timing Role: Fast, low-offset comparator generating precise timing edges synchronized to AC phase. Use Value: 30ns propagation delay minimizes phase error; 300mV output swing ensures reliable logic-level recognition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3501DBVR | 3.5ns propagation delay, 2.7–5.5V supply, no AEC-Q100 qualification, 1.5mV offset | Targeted at industrial/test equipment-not automotive qualified; higher speed but less robust ESD/short-circuit tolerance | Select when nanosecond-level timing dominates over automotive reliability requirements. |
| LMH7322MA/NOPB | 4.5ns delay, dual-channel, 2.7–12V supply, no internal hysteresis, 1.5mV offset, SOIC-8 package | Requires external hysteresis resistors; larger footprint and higher quiescent current (3.5mA) limit battery use | Choose for dual-comparator needs where space and power allow SOIC-8 and external component overhead. |
Compared with TLV3501DBVR and LMH7322MA/NOPB, the MAX49140AXK/V+T uniquely combines AEC-Q100 qualification, 30ns speed, 100μA quiescent current, and integrated hysteresis in a 2.0mm × 1.25mm SC70 package-making it optimal for space-constrained, safety-critical automotive sensing nodes.
Availability
MAX49140AXK/V+T is available at Aetrix Electronics and suitable for car battery-powered systems, line receivers, threshold detectors, and zero-crossing detectors requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for MAX49140AXK/V+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
Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for automotive, industrial, and communications applications-with emphasis on reliability, integration, and low-power performance.
The MAX49140AXK/V+T belongs to Maxim's automotive-grade high-speed comparator product line, engineered specifically for robust, low-power signal conditioning in harsh-temperature vehicle subsystems such as body control, ADAS sensors, and powertrain monitoring.
FAQ
What is the operating voltage range for the MAX49140AXK/V+T?
The MAX49140AXK/V+T operates from 2.7V to 5.5V, supporting both 3V and 5V systems. Its rail-to-rail input and output stages function across this full supply range, enabling seamless integration into mixed-voltage automotive domains without external regulators or level shifters. The device maintains specified performance-including 30ns propagation delay and 100μA supply current-at all voltages within this window.
Is the MAX49140AXK/V+T qualified for automotive applications?
Yes, the MAX49140AXK/V+T is AEC-Q100 qualified (Grade 0) and fully specified over -40°C to +125°C. It undergoes rigorous stress testing-including thermal cycling, humidity, and ESD-to meet automotive reliability standards. The "/V" suffix in the part number explicitly denotes automotive qualification, and the SC70 package carries RoHS-compliant lead-free plating ("+" marking).
Does the MAX49140AXK/V+T require external hysteresis components?
No, the MAX49140AXK/V+T features fixed internal hysteresis of 1.2mV, eliminating the need for external feedback resistors. This design simplifies PCB layout, reduces component count, and ensures consistent noise immunity across temperature and supply variations. External hysteresis can be added via positive feedback if wider thresholds are required-but is not necessary for baseline noise rejection.
What is the maximum continuous short-circuit duration the MAX49140AXK/V+T can tolerate?
The MAX49140AXK/V+T input and output pins are rated for continuous short-circuit fault conditions to either VDD or GND, per Absolute Maximum Ratings. This capability is validated across the full -40°C to +125°C range and supports robust operation in automotive wiring environments where accidental shorts may occur during service or manufacturing.
How does the output stage of the MAX49140AXK/V+T differ from open-drain comparators?
Unlike open-drain comparators, the MAX49140AXK/V+T uses a push-pull output stage that actively drives high and low-delivering VOH = VDD – 0.3V and VOL = 0.3V without external pull-up resistors. This architecture reduces propagation delay uncertainty, improves rise/fall symmetry, and lowers total system power by avoiding static pull-up current, making it ideal for high-speed, low-power automotive interfaces.
MAX49140AXK/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.5µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 200µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 30ns (Typ)
- Propagation Delay (Max):
- 1.2mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SC-70-5
MAX49140AXK/V+T FAQ
1.How can I place an order for MAX49140AXK/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX49140AXK/V+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 MAX49140AXK/V+T reliable?
The price and inventory of MAX49140AXK/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX49140AXK/V+T is usually 5 days.
3.What payment methods are accepted for MAX49140AXK/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX49140AXK/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX49140AXK/V+T?
MAX49140AXK/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX49140AXK/V+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 MAX49140AXK/V+T?
For technical support, including MAX49140AXK/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX49140AXK/V+T requirements.
6.How does Aetrix verify that MAX49140AXK/V+T is sourced from the original manufacturer or authorized distributors?
All MAX49140AXK/V+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 MAX49140AXK/V+T meets industry standards.
7.What is the process for return or replacement of MAX49140AXK/V+T?
All MAX49140AXK/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX49140AXK/V+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 MAX49140AXK/V+T part is unused and in its original packaging.
Return procedure for MAX49140AXK/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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