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Analog Devices Inc./Maxim Integrated MAX9140EUK-T
- Part No.:
- MAX9140EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX9140EUK-T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,605
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Product details
Overview
MAX9140EUK-T from Analog Devices is a single high-speed rail-to-rail input comparator optimized for 3V/5V single-supply systems, delivering 40ns propagation delay, 150μA supply current per comparator, and 500μV typical offset voltage. It operates from -40°C to +85°C (E grade), features internal 1.5mV hysteresis, and drives CMOS/TTL logic directly without external pullups - ideal for battery-powered threshold detection and line receivers.
For engineers reviewing the MAX9140EUK-T datasheet, MAX9140EUK-T pinout, MAX9140EUK-T application, or MAX9140EUK-T equivalent, key selection criteria include its SC70/SOT23-compatible 5-pin package, rail-to-rail input range extending beyond supply rails, output swing within 300mV of VCC/GND, low-power operation at 3V, and compatibility with portable and industrial 3V/5V signal conditioning designs.
Technical Context
The MAX9140EUK-T employs a bipolar process with an internally biased differential pair and current-driven output stage, enabling fast 40ns switching with minimal power consumption. Its input stage includes back-to-back diodes and 4.1kΩ series resistors for ±20mA fault tolerance and robustness against overvoltage transients.
Internal 1.5mV hysteresis eliminates need for external feedback networks while ensuring clean output transitions even with slow-moving or noisy inputs. The device's rail-to-rail input common-mode range (–0.2V to VCC + 0.2V) and output capability (VOH = VCC – 0.3V, VOL = 0.3V at 4mA) support direct interfacing across CMOS and TTL logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - enables reliable sampling of >10MHz signals in timing-critical circuits. |
| Supply Voltage Range | 2.7V to 5.5V - supports both 3V and 5V system rails without level-shifting circuitry. |
| Input Offset Voltage | 0.5mV (typ), 4.5mV (max, –40°C to +85°C) - ensures accurate threshold detection in precision discriminators. |
| Rail-to-Rail Input Range | –0.2V to VCC + 0.2V - accepts inputs beyond supply rails, simplifying sensor interface design. |
| Output Swing | VOL = 0.3V, VOH = VCC – 0.3V at 4mA - directly drives standard CMOS/TTL logic without pullup resistors. |
| Supply Current | 150μA per comparator at 3V - extends battery life in portable instrumentation and IoT edge nodes. |
| Input Hysteresis | 1.5mV - suppresses chatter on slow or noisy inputs without external components. |
Pinout & Package
MAX9140EUK-T is housed in a 5-pin SOT23 package (U5-1 land pattern), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant matte tin plating.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N.C. | No internal connection - must be left floating or tied to GND; no electrical function. |
| 2 | OUT | Open-drain compatible CMOS/TTL output - sinks up to 4mA, pulls within 300mV of GND or VCC. |
| 3 | GND | Analog/digital ground reference - requires low-inductance connection to PCB ground plane. |
| 4 | IN– | Inverting input - accepts rail-to-rail voltages; protected by internal diodes and 4.1kΩ series resistors. |
| 5 | VCC | Positive supply input - requires local 0.1μF ceramic decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input operation | Enables direct interface with sensors, DACs, and op-amps operating near supply rails without attenuation or clamping. |
| 40ns propagation delay | Supports real-time response in high-speed line receivers and zero-crossing detectors up to 25MHz effective bandwidth. |
| 1.5mV internal hysteresis | Eliminates need for external positive feedback resistors, reducing BOM count and layout area in threshold discriminators. |
| 300mV output swing margin | Guarantees valid logic levels into 74HC, 74AHC, and standard TTL families without external pullups or level shifters. |
| ±20mA input fault tolerance | Withstands continuous short-circuit faults to VCC or GND - critical for ruggedized industrial and automotive sensor interfaces. |
Applications
| Line Receivers | Threshold Detectors |
|---|---|
|
Use Scenario: Converting differential or single-ended analog signals from coaxial or twisted-pair lines into clean digital logic levels in communication interfaces. IC Role / Device Role / Timing Role: High-speed comparator performing amplitude-based decision making with minimal propagation delay skew. Use Value: 40ns delay and rail-to-rail input allow accurate recovery of NRZ data streams up to 25Mbps without external biasing networks. |
Use Scenario: Detecting when a sensor output crosses a fixed reference voltage in portable medical monitors or environmental sensors. IC Role / Device Role / Timing Role: Precision threshold discriminator with low offset and built-in hysteresis to reject noise-induced false triggers. Use Value: 0.5mV typical offset and 1.5mV hysteresis enable sub-millivolt-level event detection in low-power wearable devices. |
| Battery-Powered Systems | Zero-Crossing Detectors |
|
Use Scenario: Monitoring battery voltage or system supply rails for undervoltage lockout (UVLO) or charge-state indication in handheld instruments. IC Role / Device Role / Timing Role: Low-quiescent-current comparator providing stable trip points across temperature and supply variation. Use Value: 150μA supply current at 3V extends operational lifetime in coin-cell–powered devices by minimizing standby drain. |
Use Scenario: Identifying AC waveform polarity transitions in motor control, power metering, or lighting dimming circuits. IC Role / Device Role / Timing Role: Fast, precise zero-crossing detector with rail-to-rail input handling full-wave rectified or transformer-coupled signals. Use Value: Input range extending –0.2V below GND allows direct connection to AC-coupled sources without DC biasing components. |
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 |
|---|---|---|---|
| LMV7215M5X/NOPB | Slower 65ns propagation delay; higher 220μA supply current; no internal hysteresis; requires external feedback for noise immunity. | Suitable for less timing-critical battery monitoring but lacks integrated hysteresis for noisy environments. | Choose LMV7215M5X/NOPB only if cost sensitivity outweighs speed and hysteresis requirements. |
| TLV3501DBVR | Faster 4.5ns delay but consumes 5.3mA per comparator; rail-to-rail input only; output not rail-to-rail (VOL = 0.5V min). | Better for ultra-high-speed sampling but incompatible with low-voltage CMOS logic due to higher VOL. | Select TLV3501DBVR only when nanosecond timing dominates power budget and logic family constraints. |
Compared with MAX9140EUK-T, LMV7215M5X/NOPB trades speed and integration for lower cost, while TLV3501DBVR delivers extreme speed at >35× higher quiescent current and reduced output compatibility - making MAX9140EUK-T optimal for balanced 3V/5V portable and industrial sensing.
Availability
MAX9140EUK-T is available at Aetrix Electronics and suitable for battery-powered systems, line receivers, and threshold detectors requiring stable component supply across industrial, medical, and communications end equipment.
Supply support for MAX9140EUK-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 MAX9140EUK-T belongs to the MAX914x family of single-supply comparators designed specifically for low-power, high-speed signal conditioning in portable and space-constrained 3V/5V systems.
FAQ
What is the operating temperature range of the MAX9140EUK-T?
The MAX9140EUK-T is specified for the E-grade industrial temperature range of –40°C to +85°C. This rating is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official Analog Devices datasheet Rev 10 (7/2020), and applies to all MAX9140 variants in SOT23 and SC70 packages including MAX9140EUK-T.
Does the MAX9140EUK-T have internal hysteresis, and what is its value?
Yes, the MAX9140EUK-T includes fixed internal hysteresis of 1.5mV, as explicitly stated in the Features section and Electrical Characteristics table under "Input Hysteresis (VHYST)" with conditions confirming it applies to the MAX9140 family. This eliminates the need for external hysteresis resistors in most threshold-detection applications.
Can the MAX9140EUK-T operate from a 2.7V supply?
Yes, the MAX9140EUK-T supports a minimum supply voltage of 2.7V, as documented in the "Operating Supply Voltage (VCC)" specification (2.7V to 5.5V). Performance parameters including propagation delay (40ns typ), supply current (150μA typ), and input offset voltage remain guaranteed across this full range per the datasheet's test conditions.
What package type does the MAX9140EUK-T use, and what is its top mark?
The MAX9140EUK-T uses a 5-pin SOT23 package (package code U5-1), with top-side marking "+ADQP" as listed in the Ordering Information table of the datasheet. This matches the "MAX9140EUK+T" entry and confirms RoHS compliance via the "+" suffix.
Is the MAX9140EUK-T pin-compatible with other MAX914x comparators like the MAX9141?
No, the MAX9140EUK-T is not pin-compatible with the MAX9141 or other members of the family. It uses a 5-pin SOT23 configuration (N.C., OUT, GND, IN–, VCC), whereas the MAX9141 uses an 8-pin SOT23 with additional LE and SHDN pins - confirmed by the Pin Configurations diagrams and Pin Description table in the datasheet.
MAX9140EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- 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
- :
- SOT-23-5
MAX9140EUK-T FAQ
1.How can I place an order for MAX9140EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9140EUK-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 MAX9140EUK-T reliable?
The price and inventory of MAX9140EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9140EUK-T is usually 5 days.
3.What payment methods are accepted for MAX9140EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9140EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9140EUK-T?
MAX9140EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9140EUK-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 MAX9140EUK-T?
For technical support, including MAX9140EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9140EUK-T requirements.
6.How does Aetrix verify that MAX9140EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX9140EUK-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 MAX9140EUK-T meets industry standards.
7.What is the process for return or replacement of MAX9140EUK-T?
All MAX9140EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9140EUK-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 MAX9140EUK-T part is unused and in its original packaging.
Return procedure for MAX9140EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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