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Analog Devices Inc./Maxim Integrated MAX9144ESD-T
- Part No.:
- MAX9144ESD-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9144ESD-T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,903
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Product details
Overview
The MAX9144ESD-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 ±0.2V beyond-rail input common-mode range - used in line receivers, threshold discriminators, and zero-crossing detection circuits.
For engineers reviewing the MAX9144ESD-T datasheet, MAX9144ESD-T pinout, MAX9144ESD-T application, or MAX9144ESD-T equivalent, key selection criteria include propagation delay skew (≤2ns), output swing within 300mV of rails, internal 1.5mV hysteresis, and compatibility with CMOS/TTL logic without external pullups.
Technical Context
The MAX9144ESD-T integrates four independent comparators sharing a common ground and VCC, each featuring bipolar input stage with back-to-back diode protection and 4.1kΩ series resistors to tolerate continuous short-circuit faults to either rail. Input offset voltage is specified at 0.5–2.0mV (TYP/MAX) over -40°C to +85°C.
Its current-driven output stage delivers fast slew rate during transitions and reduces quiescent current after settling, enabling low-power operation while maintaining VOH ≥ VCC – 0.425V and VOL ≤ 0.425V at 4mA load - critical for interfacing directly with mixed-voltage logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns typical at 10mV overdrive - enables reliable sampling of >10MHz signals in timing-critical circuits. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into battery-powered and legacy 5V industrial systems. |
| Input Offset Voltage | 0.5–2.0mV (TYP/MAX at +25°C) - ensures accurate threshold detection down to sub-millivolt levels. |
| Input Common-Mode Range | -0.2V to VCC + 0.2V - allows inputs to exceed supply rails, simplifying sensor interface design. |
| Output Swing | VOL ≤ 0.425V / VOH ≥ VCC – 0.425V at 4mA - guarantees robust CMOS/TTL logic compatibility without pullup resistors. |
| Internal Hysteresis | 1.5mV - eliminates oscillation on slow-moving or noisy inputs without external feedback components. |
| Supply Current | 150μA per comparator at 3V - enables ultra-low-power operation in always-on monitoring applications. |
Pinout & Package
MAX9144ESD-T is housed in a 14-pin SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output - open-drain compatible, sinks up to 4mA, swings within 300mV of GND/VCC. |
| 2 | INA- | Comparator A inverting input - protected by internal diodes and 4.1kΩ series resistors. |
| 3 | INA+ | Comparator A noninverting input - supports rail-to-rail common-mode range including beyond-rail operation. |
| 4 | GND | Analog ground reference - must connect to low-impedance PCB ground plane for noise immunity. |
| 5 | INB+ | Comparator B noninverting input - electrically isolated from other channels; matched to INA+ specs. |
| 6 | INB- | Comparator B inverting input - identical protection and bias characteristics as INA-. |
| 7 | OUTB | Comparator B output - independent timing and loading behavior; skew ≤2ns vs. OUTA. |
| 8 | OUTC | Comparator C output - fully functional channel with same propagation delay and drive strength as OUTA. |
| 9 | INC- | Comparator C inverting input - shares same input stage architecture and fault tolerance as other inputs. |
| 10 | INC+ | Comparator C noninverting input - supports identical common-mode and overvoltage specifications. |
| 11 | VCC | Positive supply - accepts 2.7V–5.5V; requires local 0.1μF ceramic decoupling capacitor. |
| 12 | IND+ | Comparator D noninverting input - fourth independent channel; no shared internal nodes with A/B/C. |
| 13 | IND- | Comparator D inverting input - full differential input protection and rail-to-rail operation. |
| 14 | OUTD | Comparator D output - matches all electrical timing and drive specs of other outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Extends 0.2V beyond both supply rails - eliminates level-shifting circuitry for sensors operating near GND or VCC. |
| Internal 1.5mV hysteresis | Prevents chatter on slow or noisy inputs - removes need for external positive feedback resistors. |
| CMOS/TTL-compatible outputs | Swing within 300mV of rails at 4mA - interfaces directly to 3.3V/5V logic without pullup resistors or translators. |
| Continuous short-circuit tolerance | Withstands indefinite short to VCC or GND on any input/output - enhances system reliability in harsh environments. |
| Low 150μA/comparator supply current | Enables multi-channel monitoring in battery-powered devices with minimal impact on runtime. |
Applications
| Line Receivers | Threshold Detectors |
|---|---|
Use Scenario: Receiving differential or single-ended signals over coaxial or twisted-pair lines in industrial communication systems. IC Role / Device Role / Timing Role: Quad comparator acting as parallel signal conditioner, converting analog line voltages into clean digital logic levels. Use Value: 40ns propagation delay ensures accurate recovery of >10MHz data edges; rail-to-rail inputs accommodate varying line amplitudes without clipping. | Use Scenario: Monitoring battery voltage, temperature sensor output, or analog sensor thresholds in portable electronics. IC Role / Device Role / Timing Role: Four independent voltage discriminators comparing analog inputs against fixed or programmable reference voltages. Use Value: 0.5mV typical offset and 1.5mV hysteresis enable precise, chatter-free triggering at sub-millivolt thresholds. |
| Zero-Crossing Detectors | 3V/5V System Interfaces |
Use Scenario: Detecting AC waveform zero crossings in motor control, power supply synchronization, or energy metering. IC Role / Device Role / Timing Role: Comparator configured with grounded inverting input to detect polarity reversal of sinusoidal or triangular waveforms. Use Value: Input common-mode range extending below GND (-0.2V) ensures reliable detection even with undershoot transients. | Use Scenario: Bridging analog front-ends and digital controllers in mixed-voltage embedded systems (e.g., 3.3V MCU + 5V sensor). IC Role / Device Role / Timing Role: Level translator and signal integrity enhancer, converting analog thresholds into logic-compatible outputs. Use Value: Output swing within 300mV of rails guarantees valid HIGH/LOW states for both 3.3V and 5V logic families without external components. |
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/channel), no rail-to-rail inputs, no internal hysteresis. | Suitable for cost-sensitive, non-high-speed applications where precision timing is not required. | Choose LM339DR only when speed <100kHz and power budget >200μA/channel are acceptable. |
| TLV3704IPW | Faster (120ns), lower supply current (80μA/channel), rail-to-rail inputs, but no internal hysteresis and narrower supply range (2.7–5.5V same, but less robust fault tolerance). | Better for ultra-low-power battery systems needing faster response than MAX9144ESD-T but tolerating external hysteresis design. | Select TLV3704IPW when minimizing quiescent current is primary and board space allows hysteresis resistors. |
Compared with LM339DR and TLV3704IPW, the MAX9144ESD-T uniquely combines 40ns speed, 150μA/channel power, rail-to-rail inputs, and built-in 1.5mV hysteresis - making it optimal for high-fidelity signal conditioning in space-constrained, mixed-voltage designs requiring zero external components for stable switching.
Availability
MAX9144ESD-T is available at Aetrix Electronics and suitable for line receivers, battery-powered systems, threshold discriminators, and zero-crossing detectors requiring stable component supply across industrial temperature ranges (-40°C to +85°C).
Supply support for MAX9144ESD-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, headquartered in Wilmington, MA.
The MAX9140/MAX9141/MAX9142/MAX9144 family was designed specifically for high-speed, low-power, rail-to-rail single-supply comparator applications in portable, industrial, and communications equipment.
FAQ
What is the maximum operating supply voltage for the MAX9144ESD-T?
The MAX9144ESD-T supports an absolute maximum supply voltage of +6V between VCC and GND. Its recommended operating range is 2.7V to 5.5V, ensuring compatibility with both 3V and 5V systems while maintaining specified performance across temperature. Exceeding 6V may cause permanent damage, per Absolute Maximum Ratings.
Does the MAX9144ESD-T require external pullup resistors on its outputs?
No, the MAX9144ESD-T does not require external pullup resistors. Its outputs actively pull to within 0.3V of either supply rail under 4mA load, providing full CMOS/TTL logic compatibility. This rail-to-rail output swing eliminates external components and simplifies PCB layout for digital interfacing.
What is the input common-mode voltage range specification for the MAX9144ESD-T?
The MAX9144ESD-T features a rail-to-rail input common-mode range extending from -0.2V to VCC + 0.2V. This allows inputs to operate safely beyond both supply rails, supporting direct connection to sensors or signals that swing below GND or above VCC without clamping or distortion.
How many independent comparators are integrated in the MAX9144ESD-T?
The MAX9144ESD-T integrates four fully independent high-speed comparators (A, B, C, D) in a single 14-pin SO package. Each channel has dedicated IN+, IN-, and OUT pins, with no shared internal circuitry affecting timing or accuracy between channels.
Is the MAX9144ESD-T qualified for automotive applications?
No, the MAX9144ESD-T is not AEC-Q100 qualified. Only the MAX9140AAXK/V+T variant is explicitly stated as AEC-Q100 qualified in the datasheet. The MAX9144ESD-T is rated for the industrial temperature range (-40°C to +85°C) and intended for commercial and industrial applications, not automotive-grade deployment.
MAX9144ESD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SOIC
MAX9144ESD-T FAQ
1.How can I place an order for MAX9144ESD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9144ESD-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 MAX9144ESD-T reliable?
The price and inventory of MAX9144ESD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9144ESD-T is usually 5 days.
3.What payment methods are accepted for MAX9144ESD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9144ESD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9144ESD-T?
MAX9144ESD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9144ESD-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 MAX9144ESD-T?
For technical support, including MAX9144ESD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9144ESD-T requirements.
6.How does Aetrix verify that MAX9144ESD-T is sourced from the original manufacturer or authorized distributors?
All MAX9144ESD-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 MAX9144ESD-T meets industry standards.
7.What is the process for return or replacement of MAX9144ESD-T?
All MAX9144ESD-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9144ESD-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 MAX9144ESD-T part is unused and in its original packaging.
Return procedure for MAX9144ESD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9144ESD-T Tags
-
LM2903DR
Texas Instruments
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LM339DR
Texas Instruments
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LM339PWR
Texas Instruments
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LM393DT
STMicroelectronics
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
NXP USA Inc.
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