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Analog Devices Inc./Maxim Integrated MAX49140AXK/V+
- Part No.:
- MAX49140AXK/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX49140AXK/V+.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:444
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Product details
Overview
MAX49140AXK/V+ 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+ datasheet, MAX49140AXK/V+ pinout, MAX49140AXK/V+ application, or MAX49140AXK/V+ equivalent, key selection criteria include AEC-Q100 qualification, -40°C to +125°C operation, internal 1.2mV hysteresis, SC70-5 package compatibility, and fault-tolerant input/output pins capable of continuous short-circuit to either rail.
Technical Context
The MAX49140AXK/V+ employs a precision input stage with back-to-back diodes and 1kΩ series resistors for differential overvoltage protection, limiting internal differential stress to ≤1.4V. Its current-driven output stage delivers fast slew rate during transitions while reducing static current to maintain low power after settling.
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) ensure full utilization of 3V/5V supply headroom in single-supply configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 30ns at 10mV overdrive - enables reliable sampling of fast analog edges in timing-critical detection circuits. |
| Supply Current | 100μA typical at 3V - supports ultra-low-power operation in always-on automotive sensor monitoring. |
| Input Offset Voltage | 500μV max - ensures accurate threshold discrimination in precision zero-crossing and battery-voltage monitoring. |
| Input Common-Mode Range | 0V to VDD - allows direct connection to sensors or signal sources operating at rail extremes without level-shifting. |
| Output Swing | VOL = 0.3V / VOH = VDD–0.3V at 4mA - guarantees logic-compatible output levels for 3.3V/5V CMOS and TTL without pull-up resistors. |
| Hysteresis | 1.2mV input-referred - suppresses noise-induced chatter on slow-moving inputs like thermistor or potentiometer signals. |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive environments per AEC-Q100 Grade 0. |
Pinout & Package
The MAX49140AXK/V+ is housed in a 5-pin SC70 package (package code X5+1C, outline 21-0076), measuring 2.0mm × 1.25mm × 0.95mm, with exposed pad not electrically connected. This RoHS-compliant, lead(Pb)-free package supports automated SMT assembly and meets automotive thermal reliability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Comparator output | Push-pull, rail-to-rail output capable of sourcing/sinking 4mA; no external pull-up required for TTL/CMOS interfacing. |
| 2 - GND | Ground reference | Primary return path for supply and signal currents; must connect to low-inductance ground plane per layout guidelines. |
| 3 - IN+ | Noninverting input | High-impedance input with ESD protection; accepts voltages from GND to VDD; tolerant of continuous short to either rail. |
| 4 - IN- | Inverting input | High-impedance input with identical protection and common-mode range as IN+; differential input protected to ±1.4V. |
| 5 - VDD | Positive supply | Accepts 2.7V–5.5V; requires local 0.1μF ceramic decoupling capacitor placed adjacent to pin for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Supports direct sensing of signals at GND or VDD without attenuation or biasing networks. |
| Internal 1.2mV hysteresis | Eliminates need for external positive feedback resistors, reducing BOM count and PCB area in threshold detector designs. |
| 300mV output swing margin | Ensures robust logic-level compatibility across temperature and process variation in 3.3V/5V systems. |
| AEC-Q100 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Fault-tolerant I/O pins | Withstands continuous short-circuit to VDD or GND - critical for reliability in noisy or mechanically stressed automotive harnesses. |
Applications
| Car Battery-Powered Systems | Line Receivers |
|---|---|
|
Use Scenario: Monitoring 12V battery voltage with resistive divider to detect undervoltage/overvoltage conditions in always-on modules. IC Role / Device Role / Timing Role: Precision threshold detector comparing scaled battery voltage against stable reference. Use Value: 500μV offset and 1.2mV hysteresis enable accurate, chatter-free trip points across -40°C to +125°C without calibration. |
Use Scenario: Converting differential coaxial analog signals (e.g., from radar or camera sensors) into clean digital logic levels. IC Role / Device Role / Timing Role: High-speed line receiver with fast 30ns response to preserve signal edge integrity. Use Value: Rail-to-rail inputs accept wide common-mode swings; 30ns delay ensures minimal timing skew in multi-channel sync systems. |
| Threshold Detectors/Discriminators | Zero-Crossing Detectors |
|
Use Scenario: Detecting when a thermistor-based cabin temperature signal crosses preset HVAC setpoints. IC Role / Device Role / Timing Role: Low-power comparator providing hysteresis-stabilized switching for thermal control loops. Use Value: 100μA supply current extends battery life in wireless HVAC sensors; internal hysteresis removes need for external RC networks. |
Use Scenario: Identifying AC waveform polarity transitions in motor phase current sensing or power metering. IC Role / Device Role / Timing Role: Zero-crossing detector with rail-to-rail inputs tracking sine wave crossing near GND. Use Value: Input common-mode range down to 0V enables direct GND-referenced AC coupling; 30ns delay minimizes phase error in timing-critical control. |
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, but no AEC-Q100 qualification; 1.8mV hysteresis. | Targeted at industrial/commercial high-speed ADC triggering, not automotive under-hood use. | Select only if speed >30ns is mandatory and automotive qualification is unnecessary. |
| LMH7220MK/NOPB | 4.5ns delay, 2.7–12V supply, AEC-Q100 qualified, but 2.5mA supply current - 25× higher than MAX49140AXK/V+. | Suitable for high-voltage industrial line receivers where power budget allows. | Choose when faster response is needed and system can accommodate higher quiescent current. |
Compared with TLV3501DBVR and LMH7220MK/NOPB, the MAX49140AXK/V+ uniquely balances automotive qualification, ultra-low 100μA supply current, and 30ns speed - making it optimal for battery-sensitive, temperature-extreme automotive sensing where both reliability and efficiency are non-negotiable.
Availability
MAX49140AXK/V+ is available at Aetrix Electronics and suitable for car battery-powered systems, line receivers, threshold detectors, zero-crossing detectors, and 3V/5V automotive subsystems requiring stable component supply across extended temperature ranges.
Supply support for MAX49140AXK/V+ 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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX49140AXK/V+ belongs to Maxim's automotive-qualified high-speed comparator product line, engineered specifically for reliable, 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+?
The MAX49140AXK/V+ operates from 2.7V to 5.5V, with full specification guaranteed across this range. At 3V, it draws only 100μA typical supply current while maintaining 30ns propagation delay and rail-to-rail input capability - making it ideal for dual-voltage 3V/5V automotive systems where supply headroom varies.
Is the MAX49140AXK/V+ qualified for automotive applications?
Yes, the MAX49140AXK/V+ is AEC-Q100 qualified (Grade 0) and fully specified over -40°C to +125°C. Its internal hysteresis, rail-to-rail I/O, fault-tolerant pins, and SC70 packaging meet stringent automotive reliability requirements for under-hood and cabin-mounted electronics.
Does the MAX49140AXK/V+ require external hysteresis components?
No, the MAX49140AXK/V+ integrates 1.2mV input-referred hysteresis, eliminating the need for external positive feedback resistors. This simplifies design, reduces PCB area, and improves consistency across temperature - especially valuable in automotive threshold detection where external components may drift.
What is the output drive capability of the MAX49140AXK/V+?
The MAX49140AXK/V+ provides push-pull output capable of sourcing and sinking 4mA while maintaining VOL ≤ 0.3V and VOH ≥ VDD–0.3V. This ensures direct interface with 3.3V and 5V CMOS/TTL logic without pull-up resistors - critical for noise immunity and board-level simplicity in automotive modules.
Can the MAX49140AXK/V+ inputs be shorted to VDD or GND continuously?
Yes, all input and output pins of the MAX49140AXK/V+ tolerate continuous short-circuit fault conditions to either VDD or GND. This robustness is validated per Absolute Maximum Ratings and supports reliable operation in automotive harnesses prone to intermittent shorts or ESD events.
MAX49140AXK/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Strip
- 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+ FAQ
1.How can I place an order for MAX49140AXK/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX49140AXK/V+ 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+ reliable?
The price and inventory of MAX49140AXK/V+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX49140AXK/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX49140AXK/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX49140AXK/V+?
MAX49140AXK/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX49140AXK/V+ 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+?
For technical support, including MAX49140AXK/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX49140AXK/V+ requirements.
6.How does Aetrix verify that MAX49140AXK/V+ is sourced from the original manufacturer or authorized distributors?
All MAX49140AXK/V+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX49140AXK/V+?
All MAX49140AXK/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX49140AXK/V+, 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+ part is unused and in its original packaging.
Return procedure for MAX49140AXK/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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