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Analog Devices Inc./Maxim Integrated MAX9144EUD+
- Part No.:
- MAX9144EUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX9144EUD+.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,434
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Product details
Overview
MAX9144EUD+ 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 - used in precision threshold detection and line receiver circuits.
For engineers reviewing the MAX9144EUD+ datasheet, MAX9144EUD+ pinout, MAX9144EUD+ application, or MAX9144EUD+ equivalent, this page provides verified functional specifications, TSSOP-14 package details, real-world interface behavior with CMOS/TTL logic, and validated alternative comparators for 3V/5V embedded sensing and signal conditioning designs.
Technical Context
The MAX9144EUD+ integrates four independent comparators sharing a common ground and VCC rail, each featuring internal 1.5mV hysteresis to suppress noise-induced oscillation during slow input transitions. Its bipolar process enables fast switching while maintaining low input bias current (90–320nA) across –40°C to +85°C.
All inputs tolerate overvoltage up to ±0.3V beyond supply rails, and outputs swing within 300mV of VCC or GND without external pull-ups - enabling direct interfacing to 3.3V CMOS and 5V TTL logic families. Differential propagation delay is tightly controlled at ≤2ns between channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - ensures timing-critical zero-crossing and sampling decisions meet sub-50ns system budgets. |
| Supply Current per Comparator | 150μA at 3V - supports battery-powered operation with <600μA total quiescent draw for all four channels. |
| Input Offset Voltage | 0.5–2.0mV (typical 0.5mV) - enables accurate discrimination of small analog signals near reference thresholds. |
| Rail-to-Rail Input Range | –0.2V to VCC + 0.2V - accepts inputs below GND or above VCC, simplifying sensor interface without level-shifting circuitry. |
| Output Swing | VOL = 0.3V / VOH = VCC – 0.3V at 4mA load - guarantees robust logic-high/low margins for 3.3V and 5V digital interfaces. |
| Input Hysteresis | 1.5mV - eliminates chatter on noisy or slowly varying inputs without requiring external feedback resistors. |
| Operating Supply Range | 2.7V to 5.5V - supports dual-voltage system integration and brown-out tolerant operation down to 2.7V. |
Pinout & Package
MAX9144EUD+ is housed in a 14-pin TSSOP package (JEDEC MO-153, 4.4mm × 5.0mm body, 0.65mm pitch), optimized for high-density PCB layouts and automated assembly. Thermal performance supports continuous operation at TA ≤ +85°C with 727mW derated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output - open-drain compatible, sinks 4mA, swings 0.3V above GND or 0.3V below VCC. |
| 2 | INA− | Comparator A inverting input - accepts rail-to-rail voltages; protected against ±20mA continuous short-circuit fault. |
| 3 | INA+ | Comparator A noninverting input - identical electrical specs to INA−; differential input tolerance up to ±1.4V. |
| 4 | GND | Analog/digital ground reference - must be connected to low-impedance PCB ground plane for stable high-speed operation. |
| 5 | INB+ | Comparator B noninverting input - electrically isolated from other channels; shares same VCMR and offset specs as INA+. |
| 6 | INB− | Comparator B inverting input - matched to INB+ for <2ns channel-to-channel skew in synchronized applications. |
| 7 | OUTB | Comparator B output - independently driven; no crosstalk with OUTA/OUTC/OUTD under normal operation. |
| 8 | OUTC | Comparator C output - identical drive strength and voltage swing to OUTA; supports parallel decision logic. |
| 9 | INC− | Comparator C inverting input - part of third independent comparator pair; same hysteresis and input bias specs. |
| 10 | INC+ | Comparator C noninverting input - enables differential sensing configurations with matched input characteristics. |
| 11 | VCC | Positive supply pin - accepts 2.7V–5.5V; requires local 0.1μF ceramic decoupling capacitor placed within 2mm. |
| 12 | IND+ | Comparator D noninverting input - completes quad configuration; supports four independent threshold comparisons. |
| 13 | IND− | Comparator D inverting input - fully specified for rail-to-rail operation and short-circuit tolerance like other inputs. |
| 14 | OUTD | Comparator D output - final channel output; enables compact 4-channel window detectors or multi-level signal decoding. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 1.5mV hysteresis | Eliminates need for external positive feedback resistors, reducing BOM count and layout area in threshold detector designs. |
| Rail-to-rail input stage | Accepts signals from –0.2V to VCC + 0.2V, enabling direct connection to transducers, DACs, and op-amp outputs without clamping diodes. |
| CMOS/TTL-compatible outputs | Drives standard logic families without pull-up resistors - reduces power consumption and simplifies interconnect in mixed-voltage systems. |
| 40ns propagation delay | Meets timing requirements for 25MHz sampling clocks and high-speed line receivers in industrial communication interfaces. |
| Low 150μA per comparator supply current | Enables always-on monitoring in portable equipment with >1-year battery life using coin-cell or Li-ion sources. |
| Continuous short-circuit tolerance | Withstands indefinite shorts from any input or output pin to VCC or GND - improves field reliability in harsh ESD/noise environments. |
Applications
| Line Receivers | Battery-Powered Threshold Detectors |
|---|---|
|
Use Scenario: Receiving differential or single-ended signals over coaxial or twisted-pair lines in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Quad comparator acts as four independent line receivers, converting analog line voltages into clean digital logic levels with noise immunity. Use Value: 40ns delay and 1.5mV hysteresis ensure reliable edge detection even with 10–20mV line noise, eliminating false triggers in noisy factory environments. |
Use Scenario: Monitoring battery voltage, temperature, or sensor outputs in handheld medical devices or wireless sensors. IC Role / Device Role / Timing Role: Each comparator independently compares a sensor signal against a reference to generate wake-up or alert flags. Use Value: 150μA per channel and rail-to-rail inputs enable ultra-low-power operation with direct connection to 3.3V ADC references or thermistor dividers. |
| Zero-Crossing Detectors | 3V/5V System Level Shifters |
|
Use Scenario: Detecting AC waveform zero crossings in motor control inverters or power supply synchronization circuits. IC Role / Device Role / Timing Role: One comparator channel monitors AC input via resistor divider; others provide redundant detection or phase comparison. Use Value: Sub-2mV offset and 40ns response allow precise timing alignment within ±1μs of true zero crossing, critical for PWM phase accuracy. |
Use Scenario: Translating signals between 3.3V microcontroller GPIOs and 5V legacy peripherals in mixed-voltage embedded systems. IC Role / Device Role / Timing Role: Comparator functions as bidirectional level shifter by comparing input against mid-supply reference (e.g., 1.65V or 2.5V). Use Value: Rail-to-rail inputs accept 0–3.3V or 0–5V signals; CMOS/TTL outputs drive either domain directly - no external MOSFETs or translators required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 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 where timing and precision are not constrained. | Select LM339DR only when cost is primary concern and 40ns speed, 500μV offset, or rail-to-rail operation are unnecessary. |
| TLV3501CDR | Faster (4.5ns), higher supply current (5.3mA/comparator), rail-to-rail inputs, no internal hysteresis, requires external feedback for noise immunity. | Better for GHz-range sampling or RF envelope detection but demands careful layout and external hysteresis design. | Choose TLV3501CDR when nanosecond response is mandatory and board space allows for hysteresis resistors and tighter layout controls. |
Compared with LM339DR and TLV3501CDR, the MAX9144EUD+ uniquely balances 40ns speed, ultra-low 150μA power, built-in hysteresis, and rail-to-rail operation - making it optimal for portable, noise-prone, and timing-sensitive 3V/5V embedded systems where design simplicity and reliability are prioritized.
Availability
MAX9144EUD+ is available at Aetrix Electronics and suitable for battery-powered systems, line receivers, and threshold discriminators requiring stable component supply and long-term industrial availability.
Supply support for MAX9144EUD+ 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+ belongs to the MAX914x family of high-speed, low-power comparators designed specifically for precision signal conditioning in space-constrained, low-voltage embedded systems.
FAQ
What is the operating temperature range for MAX9144EUD+?
The MAX9144EUD+ 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 - ensuring reliable operation in demanding environments such as factory automation controllers and outdoor instrumentation where thermal cycling occurs.
Does MAX9144EUD+ require external pull-up resistors on its outputs?
No, MAX9144EUD+ does not require external pull-up resistors. Its outputs actively drive to within 0.3V of VCC or GND under 4mA load, providing full CMOS/TTL logic compatibility. This eliminates external components, reduces board area, and avoids additional power draw or signal rise-time degradation associated with passive pull-ups.
Can MAX9144EUD+ interface directly with 3.3V microcontrollers?
Yes, MAX9144EUD+ interfaces directly with 3.3V microcontrollers. Its outputs swing to VCC – 0.3V (≥3.0V at VCC = 3.3V) and down to 0.3V, meeting VIH ≥ 2.0V and VIL ≤ 0.8V requirements for standard 3.3V CMOS inputs. Input common-mode range extends to –0.2V to VCC + 0.2V, allowing safe connection to MCU GPIOs or ADC references.
Is internal hysteresis present on all four comparators in MAX9144EUD+?
Yes, internal hysteresis of 1.5mV is present on all four comparators in MAX9144EUD+. This fixed hysteresis is inherent to the input stage design and applies uniformly across channels, eliminating the need for external feedback networks and ensuring consistent noise immunity for every threshold comparison function implemented.
What package type is used for MAX9144EUD+?
MAX9144EUD+ uses a 14-pin TSSOP package (Moisture Sensitivity Level 1, RoHS-compliant). Its 4.4mm × 5.0mm footprint and 0.65mm lead pitch support high-density routing and automated reflow assembly - ideal for compact industrial and portable electronics where space and manufacturability are critical constraints.
MAX9144EUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX9144EUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9144EUD+ 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+ reliable?
The price and inventory of MAX9144EUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9144EUD+ is usually 5 days.
3.What payment methods are accepted for MAX9144EUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9144EUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9144EUD+?
MAX9144EUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9144EUD+ 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+?
For technical support, including MAX9144EUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9144EUD+ requirements.
6.How does Aetrix verify that MAX9144EUD+ is sourced from the original manufacturer or authorized distributors?
All MAX9144EUD+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX9144EUD+?
All MAX9144EUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9144EUD+, 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+ part is unused and in its original packaging.
Return procedure for MAX9144EUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9144EUD+ 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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