My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX9019EKA+TG0N
- Part No.:
- MAX9019EKA+TG0N
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX9019EKA+TG0N.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:3,593
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX9019EKA+TG0N from Maxim Integrated is a dual, nanoPower, precision comparator in an 8-pin SOT23 package with push-pull outputs, Beyond-the-Rails™ inputs (VEE − 0.2V to VCC + 0.2V), 0.85μA supply current at 1.8V, and internal 4mV hysteresis - designed for ultra-low-power 2-cell battery monitoring and ground-referenced sensing.
For engineers reviewing the MAX9019EKA+TG0N datasheet, MAX9019EKA+TG0N pinout, MAX9019EKA+TG0N application, or MAX9019EKA+TG0N equivalent, this page delivers verified electrical specs, functional pin mapping, real-world use cases in medical telemetry and notebook power management, and validated alternative options for mixed-voltage or reference-integrated designs.
Technical Context
The MAX9019EKA+TG0N implements a rail-to-rail input stage supporting common-mode voltages beyond supply rails by ±200mV, paired with a crowbar-current-free push-pull output stage capable of ±6mA drive. Its internal 4mV hysteresis band eliminates oscillation under slow-moving or noisy inputs without external components.
Unlike open-drain variants (e.g., MAX9020), MAX9019EKA+TG0N provides active high/low output switching with no external pull-up required, enabling direct interfacing with CMOS logic and reducing BOM count in space-constrained portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 0.85μA at 1.8V - enables >1,300k hours (150+ years) of operation on a 2000mAh alkaline AA cell pair. |
| Input Voltage Range | VEE − 0.2V to VCC + 0.2V - supports sensing at ground or supply rail without level-shifting circuitry. |
| Output Drive | ±6mA rail-to-rail swing - directly drives LEDs, MOSFET gates, or logic inputs without buffer stages. |
| Hysteresis | 4mV internal - prevents chatter on slow signals (e.g., thermistor or battery voltage ramps) without external feedback. |
| Propagation Delay | 6µs at 5V (tPD−), 28µs at 5V (tPD+) - sufficient for battery voltage threshold detection and window monitoring at <1kHz update rates. |
| Operating Voltage | 1.8V to 5.5V - compatible with single Li-ion (2.9–3.6V), dual alkaline (1.8–3.0V), and NiMH (1.8–2.4V) battery stacks. |
| Input Offset Voltage | ≤5mV (max) over −40°C to +85°C - ensures accurate trip-point stability across temperature in medical and industrial sensors. |
Pinout & Package
MAX9019EKA+TG0N is housed in an 8-pin SOT23 package (2.0mm × 2.1mm × 1.25mm, 0.65mm pitch), optimized for high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | REF | Not connected - pin 1 is NC (no internal connection) per MAX9019 functional diagram and pin description. |
| 2 | IN− | Inverting input of Comparator A - accepts signals down to VEE − 0.2V, enabling ground-referenced threshold detection. |
| 3 | IN+ | Noninverting input of Comparator A - used with IN− to configure A as high-side or low-side detector. |
| 4 | VEE | Negative supply terminal - typically GND; supports operation with split supplies if needed. |
| 5, 8 | N.C. | No connection - internally unconnected; must remain floating or grounded per layout guidelines. |
| 6 | OUTA | Push-pull output of Comparator A - actively drives high/low; sinks and sources up to ±6mA. |
| 7 | VCC | Positive supply terminal - powers both comparators and output stage; bypassing recommended for noisy rails. |
| - | INA− / INB+ | Pin 2 serves INA−; pin 3 serves INB+ - shared pins enable compact dual-channel configuration per MAX9019 pinout. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ Inputs | Enables direct sensing of signals at VEE or VCC without external resistive dividers or level shifters. |
| Crowbar-Current-Free Switching | Eliminates supply glitches during output transitions - reduces need for large decoupling capacitors in battery-powered systems. |
| Ultra-Low 0.85μA Supply Current | Extends battery life in always-on telemetry nodes; allows continuous monitoring without duty cycling. |
| Internal 4mV Hysteresis | Guarantees clean, chatter-free switching on slow analog inputs (e.g., thermistors, battery voltage decay). |
| Rail-to-Rail Push-Pull Output | Drives CMOS logic directly; eliminates external pull-up resistors and associated leakage paths. |
Applications
| 2-Cell Battery Monitoring | Medical Telemetry Sensors |
|---|---|
|
Use Scenario: Real-time detection of undervoltage and overvoltage thresholds in dual AA/AAA alkaline or NiMH battery packs powering portable ECG monitors. IC Role / Device Role / Timing Role: Dual comparator independently monitors battery stack voltage against fixed thresholds using internal hysteresis for stable flag generation. Use Value: Enables precise end-of-life prediction with ≤5mV offset error and zero additional quiescent current beyond the 0.85μA baseline. |
Use Scenario: Low-power physiological signal conditioning in wearable pulse oximeters, where sensor output must be compared against dynamic baselines. IC Role / Device Role / Timing Role: Comparator A detects heartbeat peaks; Comparator B validates signal integrity via windowed amplitude validation. Use Value: Sub-1μA total supply current preserves multi-week battery life while maintaining 4mV noise immunity on microvolt-level analog signals. |
| Notebook Power Management | Industrial Remote Sensing |
|
Use Scenario: System-level voltage supervision in ultrabooks, detecting brown-out conditions on 3.3V and 5V rails during AC adapter transitions. IC Role / Device Role / Timing Role: Dual comparator configured as independent rail monitors with separate hysteresis bands for fast response and glitch rejection. Use Value: Push-pull outputs interface directly with PMIC reset inputs; 1.8V minimum operation supports deep-sleep states with LDO-bypassed supplies. |
Use Scenario: Harsh-environment environmental monitoring nodes powered by primary lithium batteries, requiring decade-long field deployment. IC Role / Device Role / Timing Role: Threshold detector for temperature/humidity sensor outputs, triggering wake-up events only when thresholds are crossed. Use Value: 0.85μA quiescent current minimizes self-discharge; Beyond-the-Rails™ inputs tolerate sensor cable drop without signal conditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual nanoPower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9020EKA+TG0N | Open-drain output; identical pinout and supply current; requires external pull-up resistor. | Suitable for wired-OR logic, mixed-voltage I/O (e.g., 3.3V comparator driving 5V bus), or level translation. | Select MAX9020EKA+TG0N when interfacing with higher-voltage logic or implementing shared interrupt lines. |
| TLV3692IDGKR | 0.9μA supply current; rail-to-rail I/O; no internal hysteresis; 1.8V to 5.5V operation; SC70-8 package. | Lacks integrated hysteresis - requires external feedback resistors for noise immunity; smaller footprint but lower drive (±20mA). | Choose TLV3692IDGKR only if board space is critical and hysteresis can be added externally without compromising layout. |
Compared with MAX9020EKA+TG0N and TLV3692IDGKR, MAX9019EKA+TG0N delivers active push-pull outputs and guaranteed internal hysteresis in the same SOT23 footprint - simplifying design for battery-critical applications where reliability and component count matter most.
Availability
MAX9019EKA+TG0N is available at Aetrix Electronics and suitable for 2-cell battery monitoring, medical telemetry sensors, and notebook power management requiring stable component supply across long production cycles.
Supply support for MAX9019EKA+TG0N 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) designs precision analog and mixed-signal ICs for power, sensing, and connectivity in battery-powered and industrial systems.
The MAX9015–MAX9020 family was engineered specifically for ultra-low-power threshold detection in portable and remote equipment - prioritizing sub-1μA operation, rail-exceeding inputs, and robust hysteresis without external components.
FAQ
What is the maximum supply voltage for MAX9019EKA+TG0N?
The absolute maximum supply voltage (VCC to VEE) for MAX9019EKA+TG0N is 6V. The recommended operating range is 1.8V to 5.5V, ensuring reliable performance across single Li-ion, dual alkaline, and NiMH battery configurations. Exceeding 6V risks permanent damage per the Absolute Maximum Ratings table.
Does MAX9019EKA+TG0N include an internal voltage reference?
No, MAX9019EKA+TG0N does not include an internal voltage reference. It belongs to the "duals without REF" variant (per datasheet section "Electrical Characteristics-MAX9019/MAX9020"). Reference functionality is present only in MAX9015–MAX9018 (A/B-grade) variants. MAX9019EKA+TG0N relies on external reference or resistor-divider networks for threshold setting.
Can MAX9019EKA+TG0N operate with inputs below ground (VEE)?
Yes, MAX9019EKA+TG0N supports input voltages as low as VEE − 0.2V, enabling true ground-referenced or negative-sense applications without level-shifting circuitry. This Beyond-the-Rails™ capability is confirmed in the Electrical Characteristics table under "Input Common-Mode Voltage Range" and validated in Figure 1 of the datasheet.
What is the output drive capability of MAX9019EKA+TG0N?
MAX9019EKA+TG0N features a push-pull output stage capable of sourcing and sinking up to ±6mA while maintaining rail-to-rail swing. At VCC = 5V and ISINK = 6mA, VOL is guaranteed ≤350mV; at VCC = 1.8V and ISOURCE = 1mA, VCC − VOH is ≤200mV - sufficient to drive logic inputs, small LEDs, or MOSFET gates directly.
Is MAX9019EKA+TG0N pin-compatible with MAX9017EKA+TG0N?
No, MAX9019EKA+TG0N is not pin-compatible with MAX9017EKA+TG0N. While both use the 8-pin SOT23 package, MAX9017 includes an internal 1.24V reference connected to pin 1 (REF/INA−), whereas MAX9019 has pin 1 as NC and uses pin 2 exclusively as INA−. Swapping them requires PCB redesign due to differing pin functions and internal routing.
MAX9019EKA+TG0N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
MAX9019EKA+TG0N FAQ
1.How can I place an order for MAX9019EKA+TG0N through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9019EKA+TG0N 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 MAX9019EKA+TG0N reliable?
The price and inventory of MAX9019EKA+TG0N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9019EKA+TG0N is usually 5 days.
3.What payment methods are accepted for MAX9019EKA+TG0N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9019EKA+TG0N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9019EKA+TG0N?
MAX9019EKA+TG0N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9019EKA+TG0N 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 MAX9019EKA+TG0N?
For technical support, including MAX9019EKA+TG0N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9019EKA+TG0N requirements.
6.How does Aetrix verify that MAX9019EKA+TG0N is sourced from the original manufacturer or authorized distributors?
All MAX9019EKA+TG0N 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 MAX9019EKA+TG0N meets industry standards.
7.What is the process for return or replacement of MAX9019EKA+TG0N?
All MAX9019EKA+TG0N units undergo pre-shipment inspection (PSI). If there is an issue with MAX9019EKA+TG0N, 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 MAX9019EKA+TG0N part is unused and in its original packaging.
Return procedure for MAX9019EKA+TG0N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9019EKA+TG0N 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.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
