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Analog Devices Inc./Maxim Integrated MAX919ESA
- Part No.:
- MAX919ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX919ESA.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,681
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Product details
Overview
MAX919ESA 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 where minimal quiescent power and clean switching are critical.
For engineers reviewing the MAX919ESA datasheet, MAX919ESA pinout, MAX919ESA application, or MAX919ESA equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternative options, and supply-chain support details specific to the MAX919ESA - not the broader MAX917–MAX920 family.
Technical Context
The MAX919ESA implements a break-before-make push-pull output stage that eliminates crowbar current during transitions, limiting supply-current surges and suppressing supply-line glitches. Its input stage supports common-mode voltages from VEE − 0.2V to VCC + 0.2V and exhibits <1nA input bias current with no phase reversal under overdrive.
Unlike the MAX917/MAX918, it omits the internal 1.245V reference, reducing supply current to 380nA while retaining identical input architecture, hysteresis (4mV typ), and propagation delay performance (30µs low-to-high, 95µs high-to-low at VCC = 5V, CL = 15pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 380nA typical at +25°C - enables >2.5 million hours of operation on a single AA alkaline cell (2.4V end-of-life). |
| Supply Voltage Range | +1.8V to +5.5V - supports direct interface with Li-ion, NiMH, and dual-alkaline battery stacks without regulation. |
| 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 swing - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers. |
| Propagation Delay | 30µs (tPD+) / 95µs (tPD−) at VCC = 5V, CL = 15pF - balances speed and ultra-low power for threshold detection in battery-critical systems. |
| Input Offset Voltage | 1mV to 5mV - ensures reliable trip-point accuracy in precision voltage monitoring applications. |
| Internal Hysteresis | 4mV typical - prevents oscillation on slow-moving or noisy signals without requiring external feedback components. |
Pinout & Package
MAX919ESA is housed in an 8-pin SO (Small Outline) package (Package Code S8+2, Outline No. 21-0041), RoHS-compliant, with 1.27mm lead pitch and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No Connection (N.C.) | Not internally bonded; must be left floating or grounded per PCB layout best practices - no electrical function. |
| 2 | VCC | Positive supply input; accepts +1.8V to +5.5V; bypass capacitor recommended if supply impedance >1Ω. |
| 3 | IN− | Inverting input; supports common-mode range beyond rails; connects to reference or feedback network. |
| 4 | IN+ | Noninverting input; used for signal sensing (e.g., zero-crossing when tied to GND); matched to IN− for offset control. |
| 6 | OUT | CMOS push-pull output; sinks and sources up to ±8mA; swings rail-to-rail; compatible with 1.8V/3.3V/5V logic families. |
| 7 | VEE | Negative supply (typically GND); forms return path for input and output currents; must be low-impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 380nA supply current | Extends battery life by orders of magnitude vs. µA-range comparators - critical for multi-year IoT sensor nodes. |
| Beyond-the-Rails™ input range | Enables direct sensing of signals at ground or supply rail without external resistive dividers or level shifters. |
| Crowbar-current-free switching | Eliminates supply transients that would otherwise require large decoupling capacitors or LDO post-regulation. |
| Internal 4mV hysteresis | Guarantees noise-immune switching without external positive feedback resistors - reduces BOM count and layout area. |
| Rail-to-rail ±8mA push-pull output | Drives logic inputs, LEDs, or gate drivers directly - avoids need for discrete transistor buffers in space-constrained designs. |
Applications
| 2-Cell Battery Monitoring | Zero-Crossing Detection |
|---|---|
Use Scenario: Monitoring voltage decay across two series alkaline cells in a portable medical device to trigger low-battery alert before shutdown. IC Role / Device Role / Timing Role: Comparator compares battery voltage against fixed threshold; output asserts interrupt to MCU when voltage drops below 2.4V. Use Value: 380nA quiescent current extends usable battery life beyond 2.5 million hours; Beyond-the-Rails™ input allows direct connection to battery stack without divider. |
Use Scenario: Detecting AC line zero crossings in an energy meter's isolation interface to synchronize sampling and reduce EMI. IC Role / Device Role / Timing Role: IN+ tied to system ground; IN− receives 100mVP-P AC signal; OUT toggles precisely at 0V crossings. Use Value: 4mV internal hysteresis rejects noise without compromising timing accuracy; push-pull output drives MCU GPIO directly with no pull-up. |
| Ultra-Low-Power Telemetry | Threshold Discriminator in PDAs |
Use Scenario: Waking a microcontroller from deep sleep when ambient light exceeds a preset level in a solar-powered environmental sensor node. IC Role / Device Role / Timing Role: Compares photodiode amplifier output against reference; output pulse triggers wake-up interrupt. Use Value: Sub-µA supply current ensures sensor remains operational for years on coin cell; rail-to-rail output guarantees clean logic-level assertion to MCU. |
Use Scenario: Detecting lid-open events in a PDA by comparing hall-effect sensor output to threshold, enabling auto-wake functionality. IC Role / Device Role / Timing Role: IN− connected to stable reference; IN+ tied to hall sensor; output toggles on magnetic field change. Use Value: 1.8V minimum supply enables direct use with PDA's 2.5V rail; no internal reference avoids loading shared voltage reference bus. |
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 reference - lacks push-pull drive and rail-to-rail sourcing capability. | Requires external pull-up for logic interfacing; unsuitable where bidirectional drive (e.g., LED anode/cathode control) is needed. | Select when lowest possible current dominates and open-drain flexibility (e.g., wired-OR) is required over sourcing ability. |
| MAX913ESA+ | 1.2µA supply current, 2.7V min, push-pull output, no reference - higher current, narrower supply range, faster propagation (20ns). | Not viable for sub-2V battery systems; better suited for 3.3V/5V always-on monitoring with tighter timing budgets. | Select when speed (ns-scale response) outweighs ultra-low-power requirements and 2.7V+ supply is guaranteed. |
Compared with TLV3691IDBVR and MAX913ESA+, the MAX919ESA uniquely balances sub-µA quiescent current, 1.8V operation, and true bidirectional ±8mA push-pull drive - making it the only choice for long-life, rail-flexible, load-driving comparator applications.
Availability
MAX919ESA is available at Aetrix Electronics and suitable for 2-cell battery monitoring, zero-crossing detection, ultra-low-power telemetry, and threshold discrimination requiring stable component supply across industrial, medical, and portable electronics programs.
Supply support for MAX919ESA 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing markets.
The MAX917–MAX920 family was engineered specifically for nanopower, rail-flexible voltage comparison in battery-constrained systems - prioritizing supply current, input range, and glitch-free switching over raw speed.
FAQ
What is the maximum supply voltage for MAX919ESA?
The absolute maximum supply voltage (VCC to VEE) for MAX919ESA is +6V. Operation is specified from +1.8V to +5.5V; exceeding +5.5V risks permanent damage and invalidates parametric guarantees. The device is not rated for continuous operation at 6V - that value applies only to non-operational stress conditions.
Does MAX919ESA have an internal voltage reference?
No, MAX919ESA does not include an internal voltage reference. Unlike MAX917/MAX918, it omits the 1.245V ±1.5% reference to achieve its ultra-low 380nA supply current. External reference or resistor-divider networks must be used for threshold setting.
Can MAX919ESA drive an LED directly?
Yes, MAX919ESA can drive an LED directly: its push-pull output sources and sinks up to ±8mA with rail-to-rail swing. For example, with VCC = 3.3V and VEE = GND, it can sink 5mA through a 330Ω resistor/LED series combination while maintaining VOL < 400mV - sufficient for indicator-class LEDs.
What is the purpose of pins 1, 5, and 8 on MAX919ESA?
Pins 1, 5, and 8 on MAX919ESA are No Connection (N.C.) terminals - they are not bonded to the die and serve no electrical function. Per Maxim's pin description, these pins must be left unconnected (floating) or tied to GND for mechanical stability; routing traces to them provides no benefit and may risk noise coupling.
How does MAX919ESA prevent supply glitches during output transitions?
MAX919ESA uses a break-before-make output stage architecture that eliminates simultaneous conduction (crowbar current) between pull-up and pull-down devices. This design limits supply-current surges to <100nA during switching - reducing supply-line transients enough that bypass capacitors are often unnecessary in low-noise, low-impedance layouts.
MAX919ESA 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:
- Tube
- 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 FAQ
1.How can I place an order for MAX919ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX919ESA 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 reliable?
The price and inventory of MAX919ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX919ESA is usually 5 days.
3.What payment methods are accepted for MAX919ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX919ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX919ESA?
MAX919ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX919ESA 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?
For technical support, including MAX919ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX919ESA requirements.
6.How does Aetrix verify that MAX919ESA is sourced from the original manufacturer or authorized distributors?
All MAX919ESA 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 meets industry standards.
7.What is the process for return or replacement of MAX919ESA?
All MAX919ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX919ESA, 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 part is unused and in its original packaging.
Return procedure for MAX919ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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