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Analog Devices Inc./Maxim Integrated LMX339HASD+
- Part No.:
- LMX339HASD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMX339HASD+.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,082
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Product details
Overview
LMX339HASD+ from Maxim Integrated is a quad, open-drain, low-voltage comparator with internal 2mV hysteresis, designed for noise-immune threshold detection in automotive and portable systems. It operates from 1.8V to 5.5V, delivers 200µA typical supply current at 5V (all four comparators), achieves ≤200ns propagation delay at 100mV overdrive, and supports full -40°C to +125°C operation - enabling reliable use in battery-powered engine control modules.
For engineers reviewing the LMX339HASD+ datasheet, LMX339HASD+ pinout, LMX339HASD+ application, or LMX339HASD+ equivalent, key selection criteria include its guaranteed hysteresis, rail-to-rail input common-mode range down to ground, low output saturation voltage (700mV max at 4mA sink), and SO-14 package compatibility with legacy LM339 footprints.
Technical Context
The LMX339HASD+ implements a CMOS-input, open-drain output architecture optimized for low-voltage, high-noise environments. Its internal hysteresis eliminates oscillation on slow-moving inputs without external components, while the input stage supports common-mode voltages from -0.1V to VDD–0.7V - including ground-referenced sensing.
It features matched comparator pairs with <9mV input offset voltage across -40°C to +125°C, 70dB PSRR at 1.8V, and stable performance under capacitive loads up to 150pF. The device uses submicron CMOS process technology, delivering superior CMRR and lower input bias current (<400nA) versus bipolar comparators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - enables direct integration into Li-ion (3.7V), 3.3V, and 5V logic domains without level-shifting. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive applications and industrial edge nodes. |
| Supply Current (4 comp.) | 200µA max at 5V - reduces quiescent power in always-on monitoring circuits (e.g., battery voltage supervisors). |
| Input Offset Voltage | 9mV max over full temperature range - ensures accurate trip-point stability in precision threshold detection. |
| Propagation Delay | 200ns max (tPLH) at 100mV overdrive - supports response to fast transients in motor fault detection or overvoltage latching. |
| Output Saturation Voltage | 700mV max at 4mA sink - minimizes voltage drop when driving standard logic inputs or optocouplers directly. |
| Hysteresis | 2mV fixed internal - eliminates need for external feedback resistors in noisy sensor interfaces (e.g., Hall-effect switch inputs). |
Pinout & Package
LMX339HASD+ is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package measuring 8.65mm × 3.91mm × 1.75mm, RoHS-compliant and compatible with standard SO-14 PCB footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Noninverting input of Comparator A - accepts signals down to -0.1V, enabling ground-referenced voltage monitoring. |
| 2 | VSS | Negative supply terminal (GND) - common reference for all four comparators and internal bias network. |
| 3 | IN− | Inverting input of Comparator A - differential pair input with matched layout to minimize offset drift. |
| 4 | OUTA | Open-drain output of Comparator A - requires external pull-up; sinks up to 73mA at 5V for direct LED or MOSFET gate drive. |
| 5 | VDD | Positive supply (1.8V–5.5V) - powers all comparator cores and internal hysteresis circuitry. |
| 6 | OUTB | Open-drain output of Comparator B - independently controllable; supports wired-OR logic with other comparators. |
| 7 | INA− | Inverting input of Comparator A - paired with Pin 1; used for differential sensing or reference comparison. |
| 8 | INA+ | Noninverting input of Comparator A - redundant labeling per datasheet; functionally identical to Pin 1. |
| 9 | INB+ | Noninverting input of Comparator B - isolated input path prevents crosstalk between channels. |
| 10 | INB− | Inverting input of Comparator B - matched to Pin 9 for consistent channel performance. |
| 11 | INC− | Inverting input of Comparator C - dedicated input for third threshold channel. |
| 12 | INC+ | Noninverting input of Comparator C - supports independent reference configuration per channel. |
| 13 | OUTD | Open-drain output of Comparator D - final output; shares VDD/VSS rails but electrically isolated internally. |
| 14 | OUTC | Open-drain output of Comparator C - enables four independent decision outputs in single SO-14 footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 2mV hysteresis | Eliminates external resistor networks for noise immunity - reduces BOM count and layout area in sensor interface designs. |
| Rail-to-rail input common-mode range | Supports direct connection to ground-referenced sensors (e.g., thermistors, current-sense amps) without level-shifting circuitry. |
| Open-drain outputs with 73mA sink capability | Drives standard TTL/CMOS loads, LEDs, or N-channel MOSFET gates directly - no buffer IC required. |
| Guaranteed operation at 1.8V | Enables use with ultra-low-power microcontrollers and energy-harvesting systems where supply voltage drops below 2.0V. |
| Submicron CMOS process | Delivers 400nA max input bias current and 70dB PSRR - critical for high-impedance sensor front-ends in EMI-prone environments. |
Applications
| Automotive Battery Monitoring | Portable Device Power Sequencing |
|---|---|
Use Scenario: Real-time monitoring of 12V lead-acid battery voltage during engine cranking, where supply dips to 6V and noise exceeds 100mVpp. IC Role / Device Role / Timing Role: Quad comparator configured as undervoltage lockout (UVLO), overvoltage protection (OVP), charge-status flag, and cold-cranking detector - each channel independently latched. Use Value: Internal hysteresis prevents false triggering during voltage sag; 1.8V operation ensures functionality even during deep brownout conditions. |
Use Scenario: Controlled power-up sequence in medical handheld devices using multiple Li-Po cells, requiring precise voltage thresholds before enabling subsystems. IC Role / Device Role / Timing Role: Four independent comparators monitor cell voltage, charger presence, USB VBUS, and system reset - generating discrete enable signals for PMIC rails. Use Value: SO-14 package consolidates four thresholds in minimal board area; low 200µA supply current extends standby time between charges. |
| Industrial Motor Overtemperature Detection | Smart Sensor Node Threshold Logic |
Use Scenario: Interface with PT100 RTD bridge outputs in pump controllers, where self-heating and EMI cause slow-moving, noisy signals near trip points. IC Role / Device Role / Timing Role: Comparator A processes RTD voltage vs. reference; internal hysteresis replaces external Schmitt trigger, eliminating timing uncertainty from RC delays. Use Value: 2mV hysteresis provides deterministic switching without adding propagation delay - critical for meeting IEC 61800-5-2 functional safety response time budgets. |
Use Scenario: Edge AI sensor node detecting vibration anomalies via analog accelerometer output, requiring adaptive thresholding before MCU wake-up. IC Role / Device Role / Timing Role: Comparator C and D implement dual-window detection (high/low limits); outputs feed OR-gate to interrupt MCU only on valid events. Use Value: Matched offset and temperature drift (<5µV/°C) ensure window symmetry remains stable across -40°C to +85°C ambient - reducing calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | No internal hysteresis; wider supply range (2V–36V); higher supply current (500µA); bipolar input stage. | Suitable for high-voltage industrial controls but requires external hysteresis resistors for noise immunity. | Select when operating above 5.5V or needing higher output sink current (16mA). |
| TLV339IPWR | Lower supply current (12µA/comparator); no internal hysteresis; rail-to-rail inputs; SC70-6 package (dual only). | Better for ultra-low-power IoT nodes but lacks quad channel count and integrated hysteresis. | Select when minimizing standby power is primary and external hysteresis can be added. |
Compared with LM339DR and TLV339IPWR, LMX339HASD+ uniquely combines automotive-grade temperature range, integrated 2mV hysteresis, quad channel density in SO-14, and 1.8V operation - making it optimal for space-constrained, noise-prone, low-voltage embedded systems where reliability and component count reduction are critical.
Availability
LMX339HASD+ is available at Aetrix Electronics and suitable for automotive battery management, portable device power sequencing, industrial motor protection, and smart sensor node threshold detection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMX339HASD+ 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The LMX339HASD+ belongs to Maxim's LMX339 family of low-voltage, hysteresis-equipped comparators - engineered specifically for robust signal conditioning in resource-constrained, noise-sensitive embedded systems where traditional bipolar comparators fail.
FAQ
What is the maximum sink current capability of each output in LMX339HASD+?
Each open-drain output of the LMX339HASD+ can sink up to 73mA at VDD = 5V and TA = +25°C, with guaranteed minimum of 10mA across -40°C to +125°C. This allows direct driving of LEDs, small relays, or logic-level N-channel MOSFETs without external buffers - verified in the DC Electrical Characteristics table under "Output Sink Current" for LMX339/LMX339H.
Does LMX339HASD+ require external hysteresis resistors for noise immunity?
No. The LMX339HASD+ integrates 2mV of internal hysteresis as a standard feature - explicitly stated in the General Description and Features sections. This eliminates the need for external positive-feedback resistors in most noise-prone applications, such as automotive sensor interfaces or battery voltage monitoring, where slow-moving signals could otherwise cause output oscillation.
Is LMX339HASD+ pin-compatible with standard LM339SO packages?
Yes. The LMX339HASD+ uses a 14-pin SOIC package with identical pinout, dimensions, and solder pad layout to industry-standard LM339SO devices. Pin assignments match exactly per the "Pin Description" table - confirming drop-in replacement capability without PCB redesign, though electrical performance (e.g., lower supply current, internal hysteresis) exceeds legacy parts.
What is the input common-mode voltage range for LMX339HASD+ at 1.8V supply?
At VDD = 1.8V, the input common-mode voltage range for LMX339HASD+ extends from -0.1V to 1.0V - confirmed in the DC Electrical Characteristics table under "Input Voltage Range" for 1.8V operation. This allows direct interfacing with ground-referenced sources like resistive sensors or op-amp outputs without level-shifting circuitry.
How does the hysteresis of LMX339HASD+ vary with temperature and supply voltage?
LMX339HASD+ maintains 2mV hysteresis across -40°C to +125°C and 1.8V to 5.5V supply, as shown in Figures LMX331 toc10 and toc11 of the datasheet. These plots confirm hysteresis remains stable within ±0.2mV over full operating conditions - ensuring consistent noise immunity regardless of environmental or power rail variation.
LMX339HASD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 73mA @ 5V
- Current - Output (Typ):
- 300µA
- Current - Quiescent (Max):
- 70dB PSRR
- CMRR, PSRR (Typ):
- 600ns
- Propagation Delay (Max):
- 2mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LMX339HASD+ FAQ
1.How can I place an order for LMX339HASD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for LMX339HASD+ 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 LMX339HASD+ reliable?
The price and inventory of LMX339HASD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMX339HASD+ is usually 5 days.
3.What payment methods are accepted for LMX339HASD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMX339HASD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMX339HASD+?
LMX339HASD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMX339HASD+ 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 LMX339HASD+?
For technical support, including LMX339HASD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMX339HASD+ requirements.
6.How does Aetrix verify that LMX339HASD+ is sourced from the original manufacturer or authorized distributors?
All LMX339HASD+ 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 LMX339HASD+ meets industry standards.
7.What is the process for return or replacement of LMX339HASD+?
All LMX339HASD+ units undergo pre-shipment inspection (PSI). If there is an issue with LMX339HASD+, 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 LMX339HASD+ part is unused and in its original packaging.
Return procedure for LMX339HASD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMX339HASD+ 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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