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Analog Devices Inc./Maxim Integrated MAX919ESA+T
- Part No.:
- MAX919ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX919ESA+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,546
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Product details
Overview
MAX919ESA+T from Maxim Integrated is a nanopower, push-pull output comparator in an 8-pin SO package, operating from +1.8V to +5.5V with 380nA supply current, ±4mV input-referred hysteresis, and Beyond-the-Rails™ input range extending 200mV beyond VEE and VCC - designed for ultra-low-power 2-cell battery monitoring and threshold detection.
For engineers reviewing the MAX919ESA+T datasheet, MAX919ESA+T pinout, MAX919ESA+T application, or MAX919ESA+T equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-chain support for industrial and portable electronics design.
Technical Context
The MAX919ESA+T implements a rail-to-rail CMOS push-pull output stage capable of sourcing/sinking ±8mA, enabling full rail-to-rail swing into loads up to 8mA without external pull-up. Its input stage supports common-mode voltages from (VEE − 0.2V) to (VCC + 0.2V), with typical input bias current of 0.15nA and no phase reversal under overdrive.
It features crowbar-current-free switching architecture that minimizes supply-current surges during transitions - reducing power-supply glitches and eliminating need for large bypass capacitors. Propagation delay is 30µs (low-to-high) and 95µs (high-to-low) at VCC = 5V with 15pF load and 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 380nA typical - enables multi-year operation on coin-cell or 2-cell alkaline batteries |
| Supply Voltage Range | +1.8V to +5.5V - supports direct interface with Li-ion, NiMH, and alkaline battery stacks |
| Input Offset Voltage | 1mV to 5mV - ensures accurate threshold detection down to millivolt-level signals |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows sensing at ground or supply rail without level-shifting |
| Output Drive Capability | ±8mA rail-to-rail - directly drives LEDs, logic inputs, or small MOSFET gates without buffer |
| Propagation Delay | 30µs (tPD+) / 95µs (tPD−) at 5V - balances speed and ultra-low power for slow-varying sensor signals |
| Hysteresis | 4mV typical - suppresses noise-induced oscillation in low-slew-rate applications like battery voltage monitoring |
Pinout & Package
MAX919ESA+T is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, RoHS-compliant, and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connection | Internally unconnected; must be left floating or tied to GND per layout best practice |
| 2 | VEE | Negative supply pin; referenced to system ground in single-supply operation |
| 3 | IN− | Inverting input; accepts signals down to VEE − 0.2V, enabling ground-referenced sensing |
| 4 | IN+ | Noninverting input; supports common-mode range up to VCC + 0.2V |
| 5 | N.C. | No Connection - not internally bonded; avoid routing or soldering |
| 6 | OUT | CMOS push-pull output; sinks and sources current, eliminates need for external pull-up |
| 7 | VCC | Positive supply input; operates from 1.8V–5.5V with <380nA quiescent draw |
| 8 | N.C. | No Connection - unused pin; leave unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 380nA supply current | Extends battery life in always-on monitoring systems - e.g., >2.5 million hours on AA alkaline (Table 1) |
| Beyond-the-Rails™ input range | Enables direct sensing of signals at ground or supply rail without external resistive dividers |
| Internal 4mV hysteresis | Prevents chatter on noisy or slowly varying inputs such as thermistor or battery voltage ramps |
| Rail-to-rail push-pull output | Drives logic inputs, LEDs, or gate drivers directly - no external components required for basic interfacing |
| Crowbar-current-free switching | Minimizes supply transients - reduces need for local bypass capacitance and simplifies PCB layout |
Applications
| Battery Voltage Monitor | Zero-Crossing Detector |
|---|---|
Use Scenario: Monitoring discharge curve of 2-cell alkaline or NiMH battery pack in portable medical device. IC Role / Device Role / Timing Role: Comparator compares battery voltage against fixed reference (e.g., via resistor divider) to trigger low-battery alert. Use Value: 380nA quiescent current extends operational lifetime; Beyond-the-Rails™ input allows direct connection to battery stack without level-shifting. | Use Scenario: Detecting AC signal zero crossings in energy metering or motor control feedback loop. IC Role / Device Role / Timing Role: MAX919ESA+T configured with IN− grounded and IN+ fed by AC-coupled signal acts as precision zero-crossing detector. Use Value: 4mV internal hysteresis prevents false triggering on noise; push-pull output interfaces directly with microcontroller GPIO. |
| Threshold Discriminator | Telemetry Sensor Interface |
Use Scenario: Converting analog sensor output (e.g., pressure, temperature) into digital event flag for wake-up interrupt. IC Role / Device Role / Timing Role: Compares conditioned sensor voltage against programmable threshold to generate clean logic edge. Use Value: Low propagation delay variation across temperature (±10µs over −40°C to +85°C) ensures consistent timing behavior in field-deployed units. | Use Scenario: Remote environmental sensor node transmitting data only when temperature exceeds preset limit. IC Role / Device Role / Timing Role: Comparator triggers MCU wake-up from deep sleep when thermistor voltage crosses trip point. Use Value: Sub-µA supply current preserves battery capacity during long idle periods; SO package supports automated assembly in compact modules. |
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 where push-pull drive is needed | Select when lowest possible current is critical and output can be pulled up externally |
| MAX913ESA+ | 1.2µA supply current, 4.5V–11V supply range, TTL-compatible output, no Beyond-the-Rails™ input | Not usable below 4.5V; incompatible with 2-cell battery systems | Select only for higher-voltage industrial logic-level comparison with faster response |
Compared with TLV3691IDBVR and MAX913ESA+, the MAX919ESA+T uniquely combines sub-400nA current, true rail-to-rail push-pull output, and Beyond-the-Rails™ input - making it the only choice for battery-powered systems requiring both ultra-low power and direct logic interfacing without external components.
Availability
MAX919ESA+T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, and portable medical instrumentation requiring stable component supply across extended production lifecycles.
Supply support for MAX919ESA+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, mixed-signal, and power-management ICs for industrial, automotive, and computing applications.
The MAX917–MAX920 family was engineered specifically for nanopower, rail-aware sensing in battery-constrained systems - delivering guaranteed 1.8V operation, Beyond-the-Rails™ inputs, and glitch-free switching in space-limited SOT23 and SO packages.
FAQ
What is the maximum supply voltage rating for MAX919ESA+T?
The MAX919ESA+T has an absolute maximum supply voltage (VCC to VEE) of +6V. It operates over a recommended range of +1.8V to +5.5V. Exceeding +6V may cause permanent damage. The device is specified for reliable operation across −40°C to +85°C ambient temperature.
Does MAX919ESA+T include an internal voltage reference?
No, the MAX919ESA+T does not include an internal voltage reference. It belongs to the reference-less variant of the MAX917–MAX920 family. The MAX917/MAX918 models integrate a 1.245V ±1.5% reference; the MAX919ESA+T relies on external reference or resistor-divider thresholds.
Can MAX919ESA+T drive an LED directly?
Yes, the MAX919ESA+T can drive an LED directly using its push-pull output. With ±8mA drive capability and rail-to-rail swing, it supports typical indicator LEDs (e.g., 2mA @ 2V forward drop) when powered from 3.3V or 5V supplies - no series transistor or current-limiting resistor beyond basic current control is required.
What is the input common-mode voltage range of MAX919ESA+T?
The input common-mode voltage range of MAX919ESA+T is specified from (VEE − 0.2V) to (VCC + 0.2V). This Beyond-the-Rails™ capability allows the device to accept signals at ground (VEE) or above VCC - enabling direct interface with sensors referenced to system ground or supply rails without level-shifting circuitry.
Is MAX919ESA+T pin-compatible with other devices in the MAX917–MAX920 family?
No, MAX919ESA+T is not pin-compatible with MAX917ESA+ or MAX918ESA+ in the 8-pin SO package. While all share the same SO outline, pin 1 and pin 5 are No Connect on MAX919ESA+T but carry REF and N.C. functions respectively on MAX917/MAX918. Direct substitution requires schematic and layout review.
MAX919ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
- :
- 8-SOIC
MAX919ESA+T FAQ
1.How can I place an order for MAX919ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX919ESA+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 MAX919ESA+T reliable?
The price and inventory of MAX919ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX919ESA+T is usually 5 days.
3.What payment methods are accepted for MAX919ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX919ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX919ESA+T?
MAX919ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX919ESA+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 MAX919ESA+T?
For technical support, including MAX919ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX919ESA+T requirements.
6.How does Aetrix verify that MAX919ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX919ESA+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 MAX919ESA+T meets industry standards.
7.What is the process for return or replacement of MAX919ESA+T?
All MAX919ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX919ESA+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 MAX919ESA+T part is unused and in its original packaging.
Return procedure for MAX919ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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