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Analog Devices Inc./Maxim Integrated MAX919EUK-T
- Part No.:
- MAX919EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX919EUK-T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,814
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Product details
Overview
MAX919EUK-T from Maxim Integrated is a nanopower, push-pull output comparator in SOT23-5 package, operating from +1.8V to +5.5V supply, with 380nA supply current, Beyond-the-Rails™ input range (VEE − 0.2V to VCC + 0.2V), and rail-to-rail CMOS output capable of ±8mA drive - designed for ultra-low-power 2-cell battery monitoring and threshold detection.
For engineers reviewing the MAX919EUK-T datasheet, MAX919EUK-T pinout, MAX919EUK-T application, or MAX919EUK-T equivalent, this page delivers verified specifications, validated pin functions, confirmed use cases in battery management and sensing, and two technically documented alternative comparators for low-voltage, nanowatt design contexts.
Technical Context
The MAX919EUK-T implements a break-before-make push-pull output stage that eliminates crowbar current during switching, minimizing supply glitches and dynamic power surges - critical for stable operation in high-impedance, low-noise battery-powered systems. Its input stage features internal ESD protection diodes and supports common-mode voltages beyond both supply rails by ±200mV.
Unlike reference-equipped variants (MAX917/MAX918), the MAX919EUK-T omits the 1.245V ±1.5% internal reference, enabling lower quiescent current (380nA) and simplifying designs where external reference or direct threshold comparison is used. It includes 4mV typical input-referred hysteresis to prevent oscillation with slow or noisy inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 380nA at +25°C - enables multi-year operation on coin cells or 2xAA batteries without duty cycling. |
| Supply Voltage Range | +1.8V to +5.5V - supports direct interface with 2-cell alkaline, Li-ion, or NiMH battery stacks down to end-of-life voltage. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows sensing at ground or supply rail without level-shifting circuitry. |
| Output Drive Capability | ±8mA rail-to-rail push-pull - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers. |
| Input Offset Voltage | 1mV (typ), 5mV (max) - ensures accurate threshold detection within ±5mV over temperature. |
| Propagation Delay | 30µs (low-to-high), 95µs (high-to-low) at VCC = 5V, CL = 15pF - suitable for DC and low-frequency (<10kHz) monitoring applications. |
| Hysteresis | 4mV (typ) - suppresses chatter on slow-moving signals like battery voltage ramps or thermistor outputs. |
Pinout & Package
SOT23-5 package (U5+1 code), RoHS-compliant, 1.6mm × 2.9mm footprint, 1.1mm height - optimized for space-constrained portable and wearable electronics.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VEE | Negative supply terminal; connects to system ground or negative rail; supports input common-mode down to VEE − 0.2V. |
| 2 | IN− | Inverting input; accepts analog signals up to VCC + 0.2V; internally tied to reference only in MAX917/MAX918 variants. |
| 3 | IN+ | Noninverting input; used for threshold comparison; compatible with ground-referenced or rail-referenced sensing. |
| 4 | VCC | Positive supply input; operates from 1.8V–5.5V; bypassing with 100nF recommended if supply impedance >1Ω. |
| 5 | OUT | CMOS push-pull output; sinks and sources up to ±8mA; provides rail-to-rail swing with no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 380nA max - extends battery life in always-on telemetry and medical sensors. |
| Beyond-the-Rails™ inputs | Input range extends 200mV beyond VEE and VCC - eliminates need for input clamping or level shifters in rail-sensing applications. |
| Crowbar-current-free switching | No shoot-through current during output transitions - prevents supply droop and noise coupling in shared power domains. |
| Internal hysteresis | 4mV typical - ensures clean, chatter-free output even with µV-level noise on sensor inputs. |
| Rail-to-rail push-pull output | ±8mA drive capability - directly interfaces with 1.8V/3.3V logic, small solenoids, or LED indicators without external drivers. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Threshold Detection |
|---|---|
Use Scenario: Monitoring voltage decay across two alkaline AA cells in a remote sensor node. IC Role / Device Role / Timing Role: Comparator compares battery voltage against fixed threshold to trigger low-battery alert before cutoff. Use Value: 380nA quiescent current enables >5 years of operation on 2000mAh cells without wake-up cycles. |
Use Scenario: Detecting zero-crossing of AC-coupled biomedical signal in a wearable ECG front-end. IC Role / Device Role / Timing Role: Zero-crossing detector using IN− grounded and IN+ fed with mV-level signal. Use Value: Beyond-the-Rails™ input accepts signal centered at ground while powered from single 3.3V rail. |
| Ground-Line Sensing | Telemetry Signal Conditioning |
Use Scenario: Measuring current via shunt resistor referenced to system ground in a solar charge controller. IC Role / Device Role / Timing Role: High-side current sense comparator with IN− connected to shunt low-side. Use Value: Input common-mode down to VEE − 0.2V allows direct ground-referenced measurement without offset circuitry. |
Use Scenario: Converting analog sensor output (e.g., thermistor voltage) into digital event flag for LoRaWAN transmission. IC Role / Device Role / Timing Role: Threshold discriminator triggering MCU wake-up on temperature excursion. Use Value: Internal 4mV hysteresis prevents false triggers from thermal noise; 30µs propagation delay ensures timely response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDBVR | 320nA supply current, 1.8V–5.5V, open-drain output, no internal hysteresis. | Requires external hysteresis network; unsuitable for direct push-pull drive of logic or LEDs. | Select when lowest possible current is critical and output load is high-impedance or pulled externally. |
| MAX40002ANSR | 600nA supply current, 1.6V–5.5V, push-pull output, 6.5mV hysteresis, integrated reference available. | Higher current draw but wider supply range and stronger hysteresis; reference version adds 1.2V option. | Select when wider voltage range (down to 1.6V) or enhanced noise immunity (6.5mV hysteresis) is required. |
Compared with TLV3691IDBVR and MAX40002ANSR, the MAX919EUK-T uniquely balances ultra-low 380nA current, guaranteed push-pull drive, and built-in 4mV hysteresis - making it optimal for self-contained, battery-operated threshold detectors without external components.
Availability
MAX919EUK-T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power threshold detection, and ground-line sensing requiring stable component supply across industrial, medical, and IoT production programs.
Supply support for MAX919EUK-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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in harsh, space-, and energy-constrained environments.
The MAX917–MAX920 family was engineered specifically for nanopower, rail-aware voltage comparison in battery-powered instrumentation - prioritizing sub-1µA operation, Beyond-the-Rails™ input flexibility, and glitch-free switching over speed or integration.
FAQ
What is the maximum supply voltage for MAX919EUK-T?
The MAX919EUK-T has an absolute maximum supply voltage (VCC to VEE) rating of +6V. Its operational supply range is +1.8V to +5.5V, with full specification compliance across –40°C to +85°C. Exceeding +6V may cause permanent damage, and operation above +5.5V voids parametric guarantees.
Does MAX919EUK-T include an internal voltage reference?
No, the MAX919EUK-T does not include an internal voltage reference. It is the reference-free variant in the MAX917–MAX920 family. The MAX917EUK-T and MAX918EUK-T integrate a 1.245V ±1.5% reference; the MAX919EUK-T and MAX920EUK-T omit it to achieve lower 380nA supply current.
Can MAX919EUK-T drive an LED directly?
Yes, the MAX919EUK-T can drive a standard indicator LED directly: its push-pull output sources and sinks up to ±8mA with rail-to-rail swing. For a 2mA LED at 3.3V, connect anode to VCC and cathode to OUT through a current-limiting resistor - the device will sink the current cleanly without external components.
What is the input common-mode voltage range of MAX919EUK-T?
The MAX919EUK-T supports an input common-mode voltage range from VEE − 0.2V to VCC + 0.2V. This Beyond-the-Rails™ capability allows direct connection to ground (for IN− in zero-crossing detectors) or to supply rails (for rail-sensing), eliminating level-shifters in many portable applications.
Is MAX919EUK-T pin-compatible with other devices in the MAX917–MAX920 family?
Yes, all SOT23-5 variants in the MAX917–MAX920 family - including MAX917EUK-T, MAX918EUK-T, MAX919EUK-T, and MAX920EUK-T - share identical pinout and footprint (U5+1). However, functional differences exist: MAX919EUK-T and MAX917EUK-T have push-pull outputs, while MAX918EUK-T and MAX920EUK-T use open-drain outputs.
MAX919EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.001µA @ 5V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 1.2µA
- Current - Quiescent (Max):
- 66.02dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 940µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
MAX919EUK-T FAQ
1.How can I place an order for MAX919EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX919EUK-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 MAX919EUK-T reliable?
The price and inventory of MAX919EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX919EUK-T is usually 5 days.
3.What payment methods are accepted for MAX919EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX919EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX919EUK-T?
MAX919EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX919EUK-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 MAX919EUK-T?
For technical support, including MAX919EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX919EUK-T requirements.
6.How does Aetrix verify that MAX919EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX919EUK-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 MAX919EUK-T meets industry standards.
7.What is the process for return or replacement of MAX919EUK-T?
All MAX919EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX919EUK-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 MAX919EUK-T part is unused and in its original packaging.
Return procedure for MAX919EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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