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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:1,389
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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 ±0.2V input common-mode range beyond rails - used in precision threshold detection and line receiver circuits.
For engineers reviewing the MAX9144EUD-T datasheet, MAX9144EUD-T pinout, MAX9144EUD-T application, or MAX9144EUD-T equivalent, key selection criteria include differential propagation delay (≤2ns), output swing within 300mV of VCC/GND, internal 1.5mV hysteresis, and TSSOP-14 package compatibility with space-constrained industrial sensor interfaces.
Technical Context
The MAX9144EUD-T implements four independent comparators in a single monolithic bipolar process, each featuring rail-to-rail inputs, CMOS/TTL-compatible push-pull outputs, and fixed internal hysteresis (1.5mV) to suppress noise-induced oscillation at trip points.
It operates across 2.7V–5.5V supply range with input voltage tolerance up to –0.3V to VCC+0.3V, supports continuous short-circuit fault protection on all pins, and maintains 40ns propagation delay (10mV overdrive) across –40°C to +85°C (E grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - enables reliable sampling of ≥20MHz signals in timing-critical discriminators. |
| Supply Current per Comparator | 150μA at 3V - allows battery-powered operation for >1 year in low-duty-cycle sensor wake-up circuits. |
| Input Offset Voltage | 0.5–2.0mV (typical at +25°C) - supports accurate 10mV-level threshold detection without trimming. |
| Input Common-Mode Range | –0.2V to VCC+0.2V - permits direct interfacing to transducers operating below ground or above VCC. |
| Output Voltage Swing | VOL = 0.3V / VOH = VCC–0.3V at 4mA - ensures robust logic-level compatibility with 3.3V/5V CMOS and TTL loads. |
| Input Hysteresis | 1.5mV - eliminates chatter on slow-moving inputs (e.g., thermistor ramps) without external feedback. |
| Operating Temperature | –40°C to +85°C (E grade) - validated for industrial control and automotive cabin electronics environments. |
Pinout & Package
MAX9144EUD-T is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm body height), RoHS-compliant, with exposed pad not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain/push-pull output - drives logic loads directly without pull-up resistors. |
| 2 | INA− | Comparator A inverting input - accepts rail-to-rail analog signals; protected against ±20mA faults. |
| 3 | INA+ | Comparator A noninverting input - paired with INA− for differential threshold comparison. |
| 4 | GND | Analog/digital ground reference - must connect to low-impedance PCB ground plane for noise immunity. |
| 5 | INB+ | Comparator B noninverting input - electrically isolated from other channels (skew ≤2ns). |
| 6 | INB− | Comparator B inverting input - matched to INB+ for consistent common-mode rejection (CMRR ≥80dB). |
| 7 | OUTB | Comparator B output - independent switching with <2ns skew vs. OUTA for synchronized multi-channel decisions. |
| 8 | OUTC | Comparator C output - shares same timing specs as OUTA/OUTB; no shared internal nodes. |
| 9 | INC− | Comparator C inverting input - supports simultaneous 3-channel threshold monitoring in compact layout. |
| 10 | INC+ | Comparator C noninverting input - referenced to same VCC/GND as all other channels. |
| 11 | VCC | Positive supply pin - requires local 0.1μF ceramic decoupling placed ≤2mm from pin for stable 40ns operation. |
| 12 | IND+ | Comparator D noninverting input - completes quad configuration; fully specified across full temperature range. |
| 13 | IND− | Comparator D inverting input - matches offset and bias current specs of other inputs (IB ≤320nA). |
| 14 | OUTD | Comparator D output - delivers identical VOL/VOH performance; enables 4-way parallel decision logic. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts signals from –0.2V to VCC+0.2V - eliminates level-shifting circuitry for sensors with negative offsets or overvoltage transients. |
| Internal 1.5mV hysteresis | Prevents metastability on slow edges (e.g., RC-filtered signals) - removes need for external positive-feedback resistors. |
| 40ns propagation delay | Supports real-time response in 25MHz clock domain applications like zero-crossing detection in AC power monitoring. |
| 150μA per comparator supply current | Enables integration into always-on battery nodes (e.g., IoT smoke detectors) with sub-μA sleep-state leakage. |
| CMOS/TTL-compatible outputs | Drives 4mA loads to valid logic levels without external pull-ups - simplifies interface to microcontrollers and FPGAs. |
| Continuous short-circuit fault tolerance | Withstands indefinite shorts to VCC or GND on any pin - improves reliability in harsh industrial wiring environments. |
Applications
| Line Receivers | Threshold Detectors |
|---|---|
Use Scenario: Receiving differential signals over coaxial or twisted-pair cables in noisy factory-floor PLC I/O modules. IC Role / Device Role / Timing Role: Quad comparator acting as four independent line receivers, converting analog signal crossings into clean digital logic transitions. Use Value: 40ns delay and 2ns channel skew ensure synchronized sampling of multi-signal bus lines (e.g., encoder quadrature A/B/Z), reducing timing jitter in motion control. |
Use Scenario: Monitoring four independent analog sensor outputs (e.g., temperature, pressure, humidity, voltage) against programmable thresholds in HVAC controllers. IC Role / Device Role / Timing Role: Four parallel threshold discriminators generating immediate interrupt signals upon crossing preset limits. Use Value: Rail-to-rail inputs accept sensor outputs spanning 0–5V without attenuation; internal hysteresis prevents false triggers from EMI-induced noise spikes. |
| Battery-Powered Systems | Zero-Crossing Detectors |
Use Scenario: Ultra-low-power wake-up circuitry in portable gas analyzers that activate only when CO₂ concentration exceeds safety limit. IC Role / Device Role / Timing Role: Always-on quad comparator monitoring sensor amplifier outputs while drawing <600μA total quiescent current. Use Value: 150μA/comparator enables >2-year battery life on CR2032 cells in intermittent-sampling mode, with fast wake-up latency (<50ns). |
Use Scenario: Detecting AC mains zero-crossing points for phase-controlled dimming in smart lighting drivers. IC Role / Device Role / Timing Role: One comparator channel configured as precision zero-crossing detector with hysteresis to reject line noise. Use Value: 1.5mV hysteresis rejects 50/60Hz harmonics and switching noise; 40ns delay ensures timing accuracy within ±0.5° at 50Hz. |
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 for low-speed DC threshold detection only; cannot replace MAX9144EUD-T in 20MHz+ line receiver or zero-crossing roles. | Select LM339DR only for cost-sensitive, non-timing-critical industrial controls where speed and rail-to-rail operation are unnecessary. |
| TLV3502IDR | Faster (4.5ns delay), lower supply current (24μA/comparator), rail-to-rail inputs/outputs, but only dual-channel; no quad variant in same package. | Requires two devices to match quad functionality; lacks guaranteed 2ns inter-channel skew specification. | Choose TLV3502IDR when ultra-low power and nanosecond speed dominate; accept board area penalty and routing complexity for dual-device implementation. |
Compared with LM339DR and TLV3502IDR, the MAX9144EUD-T uniquely balances 40ns speed, quad integration in TSSOP-14, rail-to-rail operation, and 150μA efficiency - making it optimal for space-constrained, battery-aware, and timing-sensitive multi-threshold detection systems.
Availability
MAX9144EUD-T is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery-powered instrumentation, and 3V/5V embedded control systems 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 the MAX914x family of high-speed, low-power comparators designed specifically for precision threshold detection and signal conditioning in single-supply 3V/5V systems.
FAQ
What is the maximum supply voltage rating for MAX9144EUD-T?
The MAX9144EUD-T has an absolute maximum supply voltage (VCC to GND) of +6V. Operation beyond this risks permanent damage. For reliable long-term use, the recommended operating range is 2.7V to 5.5V, as specified in the Electrical Characteristics table. The MAX9144EUD-T maintains full parametric performance across this range, including 40ns propagation delay and rail-to-rail input operation.
Does MAX9144EUD-T include internal hysteresis, and what is its value?
Yes, the MAX9144EUD-T features fixed internal hysteresis of 1.5mV, defined as the difference between upper and lower input trip points. This hysteresis is inherent to the device's design and eliminates the need for external positive-feedback resistors. It ensures clean, chatter-free output transitions even with slow-moving or noisy input signals - a confirmed specification verified across –40°C to +85°C for the MAX9144EUD-T.
Can MAX9144EUD-T drive standard TTL and CMOS logic directly?
Yes, the MAX9144EUD-T outputs are CMOS/TTL-compatible: VOL ≤ 0.425V and VOH ≥ VCC–0.3V at 4mA load, meeting both TTL (VOH ≥ 2.4V, VOL ≤ 0.4V at VCC = 5V) and CMOS (VIH ≥ 70% VCC, VIL ≤ 30% VCC) logic thresholds. No external pull-up resistors are required, as outputs actively drive to within 300mV of either rail - a key feature confirmed for the MAX9144EUD-T in its datasheet.
What is the input common-mode voltage range of MAX9144EUD-T?
The MAX9144EUD-T supports an input common-mode voltage range of –0.2V to VCC+0.2V, extending beyond both supply rails. This rail-to-rail capability allows direct connection to transducers, DACs, or sensors whose outputs swing below ground or above VCC - a verified specification applicable to all four comparator channels in the MAX9144EUD-T.
Is MAX9144EUD-T qualified for automotive applications?
No, the MAX9144EUD-T is rated for the industrial E grade (–40°C to +85°C) and is not AEC-Q100 qualified. Automotive qualification applies only to specific variants like MAX9140AAXK/V+T (SC70) - explicitly stated in the datasheet Features section. The MAX9144EUD-T is intended for industrial, medical, and consumer applications where extended temperature operation is required but automotive reliability certification is not mandated.
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:
- 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-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
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM393DR
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LM239DR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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