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Analog Devices Inc./Maxim Integrated MAX9144EUD+T
- Part No.:
- MAX9144EUD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX9144EUD+T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,187
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Product details
Overview
MAX9144EUD+T from Analog Devices is a quad high-speed rail-to-rail input comparator optimized for 3V/5V single-supply systems, delivering 40ns propagation delay, 150μA per comparator supply current, and 500μV typical offset voltage - enabling precise threshold detection in battery-powered instrumentation and line receivers.
For engineers reviewing the MAX9144EUD+T datasheet, MAX9144EUD+T pinout, MAX9144EUD+T application, or MAX9144EUD+T equivalent, this device supports fast edge-sensitive sampling, low-voltage CMOS/TTL interfacing, and fault-tolerant operation with rail-to-rail inputs and outputs swinging within 300mV of VCC/GND.
Technical Context
The MAX9144EUD+T integrates four independent comparators on a bipolar process, each featuring internal 1.5mV hysteresis to suppress noise-induced oscillation during slow input transitions. Its rail-to-rail input stage accepts voltages from –0.2V to VCC + 0.2V, and its current-driven output stage delivers VOH ≥ VCC – 0.425V and VOL ≤ 0.425V at 4mA load.
All four channels share a common ground and VCC supply, with guaranteed differential propagation delay skew ≤ 2ns and channel-to-channel propagation delay matching ≤ 2ns (VOD = 10mV), supporting synchronized multi-threshold decision logic in timing-critical signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - enables reliable sampling of >10MHz digital edges or analog zero-crossings. |
| Supply Current per Comparator | 150μA at 3V - allows four-channel operation at <600μA total, ideal for always-on sensor monitoring. |
| Input Offset Voltage | 0.5–2.0mV (typ) - ensures sub-millivolt threshold accuracy across temperature without trimming. |
| Rail-to-Rail Input Range | –0.2V to VCC + 0.2V - permits direct interface to sensors or DACs operating beyond supply rails. |
| Output Swing | VOL ≤ 0.425V / VOH ≥ VCC – 0.425V at 4mA - drives standard CMOS/TTL loads without external pull-ups. |
| Input Hysteresis | 1.5mV - eliminates chatter on noisy or slowly varying signals without external feedback components. |
| Operating Supply Voltage | 2.7V to 5.5V - supports dual-voltage system interoperability (e.g., 3.3V logic with 5V analog front-end). |
Pinout & Package
MAX9144EUD+T is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm body height), optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain compatible output - sinks current when active; pulls to GND within 0.425V at 4mA. |
| 2 | INA− | Comparator A inverting input - accepts rail-to-rail common-mode voltage; protected against ±20mA continuous fault current. |
| 3 | INA+ | Comparator A noninverting input - identical electrical specs to INA−; forms differential pair with INA−. |
| 4 | VCC | Positive supply pin - powers all four comparators; requires local 0.1μF ceramic decoupling. |
| 5 | INB+ | Comparator B noninverting input - electrically isolated from other channels; matched offset and delay vs. INA+/INA−. |
| 6 | INB− | Comparator B inverting input - shares same input stage architecture and protection as INA−. |
| 7 | OUTB | Comparator B output - independent timing behavior; ≤2ns skew vs. OUTA under matched conditions. |
| 8 | GND | Analog ground reference - must connect to low-impedance PCB ground plane; shared by all four comparators. |
| 9 | INC− | Comparator C inverting input - part of third independent comparator; no functional coupling to A/B channels. |
| 10 | INC+ | Comparator C noninverting input - supports identical input range and hysteresis as INA+/INA−. |
| 11 | OUTC | Comparator C output - maintains 40ns delay and rail-swing performance; usable for parallel threshold decisions. |
| 12 | IND+ | Comparator D noninverting input - fourth independent channel; fully specified across –40°C to +85°C. |
| 13 | IND− | Comparator D inverting input - matches input bias current (90–320nA) and CMRR (80dB min) of other channels. |
| 14 | OUTD | Comparator D output - completes quad functionality; enables simultaneous 4-way window or level detection. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 1.5mV hysteresis | Eliminates need for external positive feedback resistors while ensuring clean switching on slow or noisy inputs. |
| Rail-to-rail input stage | Accepts input voltages 0.2V beyond VCC or GND - enables direct connection to overvoltage-tolerant sensors or DACs. |
| CMOS/TTL-compatible outputs | Deliver full logic swing without pull-up resistors - reduces BOM count and board space in mixed-voltage systems. |
| Quad-channel integration | Four matched comparators in one 14-pin TSSOP - replaces discrete solutions, improves channel-to-channel timing alignment. |
| Continuous short-circuit tolerance | Withstands indefinite short from any input or output pin to VCC or GND - enhances robustness in industrial environments. |
Applications
| Line Receiver | Threshold Detector |
|---|---|
|
Use Scenario: Receiving differential or single-ended signals over coaxial or twisted-pair lines subject to EMI and ground offset. IC Role / Device Role / Timing Role: Quad comparator acts as high-speed line receiver with adjustable thresholds, rejecting common-mode noise via rail-to-rail input range. Use Value: 40ns response time captures fast data edges; 1.5mV hysteresis prevents false triggering from line reflections or crosstalk. |
Use Scenario: Converting analog sensor outputs (e.g., temperature, pressure) into clean digital flags for microcontroller interrupt handling. IC Role / Device Role / Timing Role: Each comparator monitors a distinct voltage threshold; outputs drive GPIO pins directly without level-shifting. Use Value: 500μV offset and matched propagation delay enable precise multi-level detection (e.g., under/normal/over-temperature). |
| Battery-Powered System | Zero-Crossing Detector |
|
Use Scenario: Always-on voltage monitoring in portable medical devices or IoT nodes where quiescent current dictates battery life. IC Role / Device Role / Timing Role: Four comparators supervise multiple supply rails (VDD, VBAT, reference) and wake-up triggers simultaneously. Use Value: 150μA per comparator enables full quad operation at <600μA - extends coin-cell battery life to multi-year duration. |
Use Scenario: Detecting AC waveform polarity transitions in motor control, power metering, or audio signal processing. IC Role / Device Role / Timing Role: One comparator channel compares AC input to 0V reference; others implement hysteresis or phase-shifted triggers. Use Value: Rail-to-rail input accepts bipolar AC signals directly; 40ns delay ensures accurate timing for 10MHz+ zero-cross events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Slower (1.3μs propagation delay), higher supply current (500μA/comparator), no rail-to-rail inputs, no internal hysteresis. | Suitable only for low-speed, non-critical threshold detection; requires external hysteresis resistors and level-shifting for 3V systems. | Select LM339DR only if cost is primary constraint and speed/power/accuracy requirements are relaxed. |
| TLV3502IDR | Faster (4.5ns delay), lower offset (1.5mV max), but single-channel; quad implementation requires four separate packages and layout area. | Used where ultra-low propagation delay dominates design priority, and board space is not constrained. | Choose TLV3502IDR when sub-10ns timing resolution is mandatory and quad integration is secondary. |
Compared with LM339DR and TLV3502IDR, MAX9144EUD+T uniquely balances 40ns speed, 150μA/channel ultra-low power, rail-to-rail input capability, and integrated hysteresis in a single 14-pin TSSOP - making it optimal for compact, battery-aware, noise-resilient multi-threshold systems.
Availability
MAX9144EUD+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial line receivers, precision threshold detectors, and zero-crossing detection circuits requiring stable component supply across extended temperature ranges.
Supply support for MAX9144EUD+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 since 1965.
The MAX9144EUD+T belongs to Analog Devices' precision high-speed comparator product line, engineered specifically for low-power, rail-to-rail, single-supply operation in portable and noise-sensitive measurement systems.
FAQ
What is the operating temperature range for MAX9144EUD+T?
The MAX9144EUD+T is rated for the E-grade industrial temperature range of –40°C to +85°C. This specification is guaranteed across all electrical parameters including propagation delay, offset voltage, and supply current - making MAX9144EUD+T suitable for deployment in harsh ambient environments without derating.
Does MAX9144EUD+T require external pull-up resistors on its outputs?
No, MAX9144EUD+T does not require external pull-up resistors. Its outputs actively drive to within 0.425V of VCC (VOH) and GND (VOL) at 4mA load, providing full CMOS/TTL-compatible logic levels directly - eliminating external components and reducing board space and BOM cost.
Can MAX9144EUD+T accept input voltages beyond the supply rails?
Yes, MAX9144EUD+T supports an input common-mode range from –0.2V to VCC + 0.2V, allowing inputs to safely exceed both supply rails by up to 200mV. This rail-overdrive capability enables direct interfacing with overvoltage-tolerant sensors and DACs without clamping diodes or level shifters.
How does the internal hysteresis of MAX9144EUD+T improve noise immunity?
The MAX9144EUD+T features fixed 1.5mV internal hysteresis, creating distinct upper and lower trip points that prevent output oscillation during slow or noisy input transitions. This eliminates the need for external hysteresis resistors while ensuring reliable switching - a key advantage of MAX9144EUD+T in EMI-prone applications.
Is MAX9144EUD+T pin-compatible with other devices in the MAX914x family?
No, MAX9144EUD+T is not pin-compatible with MAX9140, MAX9141, or MAX9142 due to differing pin counts (14-pin TSSOP vs. 5-/8-pin packages) and channel count. However, its pinout follows the standardized 14-pin quad comparator layout shown in the datasheet top view - ensuring consistent routing practices across designs using MAX9144EUD+T.
MAX9144EUD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- 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
- :
- 14-TSSOP
MAX9144EUD+T FAQ
1.How can I place an order for MAX9144EUD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9144EUD+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 MAX9144EUD+T reliable?
The price and inventory of MAX9144EUD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9144EUD+T is usually 5 days.
3.What payment methods are accepted for MAX9144EUD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9144EUD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9144EUD+T?
MAX9144EUD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9144EUD+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 MAX9144EUD+T?
For technical support, including MAX9144EUD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9144EUD+T requirements.
6.How does Aetrix verify that MAX9144EUD+T is sourced from the original manufacturer or authorized distributors?
All MAX9144EUD+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 MAX9144EUD+T meets industry standards.
7.What is the process for return or replacement of MAX9144EUD+T?
All MAX9144EUD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9144EUD+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 MAX9144EUD+T part is unused and in its original packaging.
Return procedure for MAX9144EUD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9144EUD+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.
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