My Inquiry
My Account
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:4,258
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX919ESA-T from Maxim Integrated is a nanopower, push-pull output comparator in an 8-pin SO package, designed for ultra-low-power systems operating down to +1.8V supply. It features Beyond-the-Rails™ inputs (extending 200mV beyond VEE and VCC), 380nA typical supply current, rail-to-rail CMOS output capable of ±8mA drive, and no internal reference. It is used in 2-cell battery monitoring and zero-crossing detection circuits.
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 for key specs, validated pin functions, confirmed use cases in battery-powered instrumentation, and two rigorously cross-checked alternative comparators with documented functional and application-level differences.
Technical Context
The MAX919ESA-T implements a break-before-make push-pull output stage that eliminates crowbar current during switching, minimizing supply glitches and dynamic power surges. Its input stage supports common-mode voltages from VEE − 0.2V to VCC + 0.2V and exhibits <1nA input bias current over temperature.
It delivers 4mV internal hysteresis to prevent oscillation with slow or noisy inputs, and achieves low propagation delay (30µs low-to-high, 95µs high-to-low at VCC = 5V) while maintaining sub-400nA quiescent current across 1.8V–5.5V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 380nA typical - enables multi-year operation on coin cells or AA batteries in always-on sensing nodes |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interface with 2-cell alkaline, Li-ion, or NiMH battery stacks without regulation |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows ground-referenced or supply-referenced threshold detection without level-shifting |
| Output Drive | ±8mA rail-to-rail - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers |
| Propagation Delay | 30µs (tPD+) / 95µs (tPD−) at VCC = 5V - balances speed and ultra-low power for wake-up or alert generation |
| Input Offset Voltage | 1mV (typ), 5mV (max) - ensures reliable threshold discrimination under 10mV signal margins |
| Hysteresis | 4mV internal - suppresses chatter on slowly varying inputs like battery voltage ramps or thermistor outputs |
Pinout & Package
MAX919ESA-T is housed in an 8-pin SO (Small Outline) package with standard 150mil body width and 1.27mm pitch. Pin 1 is marked with a beveled corner or dot; pins are numbered counter-clockwise from pin 1.
| 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 terminal - connects to system ground or negative rail; referenced for all input/output voltages |
| 3 | IN− | Inverting input - accepts threshold reference or feedback signal; supports Beyond-the-Rails operation |
| 4 | IN+ | Noninverting input - receives sensed signal (e.g., battery voltage, sensor output); immune to phase reversal |
| 5 | OUT | CMOS push-pull output - actively drives high/low; compatible with TTL/CMOS loads up to ±8mA |
| 6 | VCC | Positive supply terminal - powers internal circuitry; operates down to 1.8V with full spec compliance |
| 7 | No Connection | Internally unconnected; no electrical function; avoid routing signals to this pin |
| 8 | No Connection | Internally unconnected; no electrical function; avoid routing signals to this pin |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ Inputs | Enables direct sensing at ground or supply rail without clamping diodes or external biasing networks |
| Crowbar-Current-Free Switching | Eliminates supply-line transients during output transitions - reduces need for local bypass capacitance |
| Internal Hysteresis (4mV) | Guarantees clean, chatter-free output edges on slow-moving analog inputs like thermistors or battery decay curves |
| No Phase Reversal | Prevents erroneous output inversion when inputs exceed common-mode range - critical for fault-tolerant monitoring |
| Rail-to-Rail Output Swing | Delivers full logic swing (0V to VCC) into 8mA loads - simplifies interface with downstream digital circuitry |
Applications
| 2-Cell Battery Monitoring | Zero-Crossing Detection |
|---|---|
Use Scenario: Monitoring voltage decay of two alkaline or NiMH cells in portable medical devices or remote sensors. IC Role / Device Role / Timing Role: Comparator compares battery voltage against fixed or scaled threshold to trigger low-battery alerts or shutdown sequencing. Use Value: 380nA supply current extends operational life by >2.5× versus µA-range comparators; Beyond-the-Rails inputs allow direct connection to battery terminals. | Use Scenario: Detecting AC signal polarity transitions in low-power energy harvesting interfaces or audio presence detection. IC Role / Device Role / Timing Role: Inverting input grounded; noninverting input receives AC-coupled signal; output toggles at each zero crossing. Use Value: No internal reference required; rail-to-rail output cleanly drives microcontroller interrupt pins; low supply current avoids loading weak signal sources. |
| Ultra-Low-Power Telemetry | Threshold Discriminator in PDAs |
Use Scenario: Wake-up trigger for wireless sensor nodes based on environmental thresholds (e.g., temperature, light). IC Role / Device Role / Timing Role: Compares sensor output (e.g., thermistor divider) to stable reference; output asserts interrupt to MCU only when threshold crossed. Use Value: 4mV hysteresis prevents false wake-ups from noise; 1.8V operation matches Li-ion cell minimum voltage; SO package supports automated assembly. | Use Scenario: Detecting lid-open or docking events in handheld computing devices using mechanical switch or Hall sensor inputs. IC Role / Device Role / Timing Role: Converts analog switch closure or magnetic field strength into clean digital logic edge for system controller. Use Value: Push-pull output eliminates need for external pull-up resistor; 8mA drive capability ensures robust logic-level signaling across PCB traces. |
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 min, open-drain output, no internal hysteresis | Requires external hysteresis network for noise immunity; unsuitable for direct logic interfacing without pull-up | Select when lowest possible current dominates and output flexibility (e.g., wired-OR) is needed |
| MAX913ESA+ | 1.2µA supply current, 4.5V min, push-pull output, no hysteresis, faster (120ns) | Higher power draw limits battery life; requires ≥4.5V supply - incompatible with 2-cell alkaline end-of-life | Select only in higher-voltage, speed-critical applications where 380nA is not required |
Compared with TLV3691IDBVR and MAX913ESA+, the MAX919ESA-T uniquely combines sub-400nA current, 1.8V operation, push-pull output, and built-in hysteresis - making it the only choice for long-life, self-contained threshold detection in space-constrained, battery-powered systems.
Availability
MAX919ESA-T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, zero-crossing detection, ultra-low-power telemetry, and PDA threshold discrimination requiring stable component supply and long-term manufacturability.
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 demanding industrial, medical, and communications applications.
The MAX917–MAX920 family was engineered specifically for nanopower, rail-compatible threshold detection in battery-constrained systems - prioritizing supply current, input range, and glitch-free switching over raw speed.
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. Operation is specified from 1.8V to 5.5V; exceeding 5.5V may cause permanent damage or parametric shift. Always observe derating guidelines for reliability in extended-temperature environments.
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 integrate a 1.245V ±1.5% reference; the MAX919ESA-T relies on external threshold sources, enabling greater design flexibility in multi-voltage systems.
Can MAX919ESA-T operate with inputs below ground (VEE)?
Yes, the MAX919ESA-T supports input voltages down to VEE − 0.2V, enabling true ground-referenced or slightly negative signal detection. This Beyond-the-Rails™ capability eliminates the need for level-shifting circuitry when monitoring signals referenced to system ground or split supplies.
What is the output drive capability of MAX919ESA-T?
The MAX919ESA-T provides CMOS push-pull output with ±8mA drive capability at VCC = 5V and ±1mA at VCC = 1.8V. It delivers rail-to-rail swing (0V to VCC) into these loads, allowing direct interface with logic inputs, LEDs, or small gate drivers without external buffering.
Is MAX919ESA-T RoHS-compliant and lead-free?
Yes, the MAX919ESA-T carries the "+" suffix indicating a lead(Pb)-free and RoHS-compliant package. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard reflow soldering processes, including peak temperatures up to +260°C.
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:
- 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
- :
- 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.
MAX919ESA-T 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…
