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Analog Devices Inc./Maxim Integrated MAX920EUK-T
- Part No.:
- MAX920EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX920EUK-T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,744
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Product details
Overview
MAX920EUK-T from Maxim Integrated is a nanopower, open-drain output comparator in SOT23-5 package, guaranteed to operate from +1.8V to +5.5V supply, with 380nA typical supply current, ±0.2V beyond-the-rails input range, and internal 4mV hysteresis-designed for ultra-low-power 2-cell battery monitoring and threshold detection in portable medical and telemetry systems.
For engineers reviewing the MAX920EUK-T datasheet, MAX920EUK-T pinout, MAX920EUK-T application, or MAX920EUK-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 OEM and embedded design programs.
Technical Context
The MAX920EUK-T implements a rail-to-rail input stage with common-mode range extending 200mV beyond VEE and VCC, enabling sensing at ground or supply lines without level-shifting. Its open-drain output supports mixed-voltage logic translation up to 6V absolute max on the pull-up side.
It features crowbar-current-free switching architecture that minimizes supply-current surges during transitions, eliminating typical comparator-induced supply glitches. Internal hysteresis (4mV typ.) ensures clean, oscillation-free switching even with slow-moving or noisy inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 380nA typ. at +25°C - 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 Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows direct sensing at ground or supply rails without external biasing |
| Output Type | Open-drain - enables wire-OR logic, level translation, and flexible pull-up to higher or lower voltage domains |
| Input Offset Voltage | 1mV min / 5mV max - ensures accurate threshold detection down to sub-10mV differential signals |
| Hysteresis | 4mV typ. - suppresses noise-induced chatter on slow-rising/falling inputs without external components |
| Propagation Delay | 35µs typ. at VCC = 5V, RPULLUP = 100kΩ - balances speed and ultra-low power for battery-critical timing |
Pinout & Package
SOT23-5 package (U5+1 code), RoHS-compliant, 1.6mm × 2.9mm footprint, 1.1mm height - optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VEE) | Negative supply terminal | Ground reference for all internal circuitry; must be connected to system GND or negative rail |
| 2 (IN−) | Inverting input | Accepts reference or feedback signal; supports common-mode voltages down to VEE − 0.2V |
| 3 (IN+) | Noninverting input | Accepts sensed signal; full rail-to-rail input capability enables direct connection to battery or sensor outputs |
| 4 (VCC) | Positive supply terminal | Power source from +1.8V to +5.5V; supplies internal bias and output driver |
| 5 (OUT) | Open-drain output | Drains current only; requires external pull-up resistor to define logic-high voltage and drive strength |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ inputs | Enables direct sensing at ground or supply line without external resistive dividers or level shifters |
| Crowbar-current-free switching | Eliminates supply-line transients during output transitions-reducing need for large bypass capacitors |
| Internal 4mV hysteresis | Prevents oscillation on noisy or slowly varying inputs-no external feedback components required |
| Open-drain output | Supports mixed-voltage I/O (e.g., 5V device driving 3V logic) and wired-AND bus configurations |
| Ultra-low 380nA supply current | Extends battery life in always-on monitoring applications-e.g., >2.5 million hours on 1000mAh cell |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Threshold Detection |
|---|---|
Use Scenario: Monitoring voltage decay across two series-connected alkaline cells in a handheld medical meter. 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 extends operational life by >3× versus µA-range comparators under same load. | Use Scenario: Detecting temperature threshold crossings in a battery-powered environmental sensor node. IC Role / Device Role / Timing Role: Compares analog output of thermistor network to reference point; open-drain output interfaces directly to microcontroller GPIO. Use Value: Beyond-the-rails input allows direct connection to thermistor divider without rail-splitting, reducing component count and leakage error. |
| Logic-Level Translation | Telemetry Signal Conditioning |
Use Scenario: Converting 5V UART signals to 3.3V logic levels for an ultra-low-power BLE SoC in a remote asset tracker. IC Role / Device Role / Timing Role: MAX920EUK-T powered from 5V domain, with pull-up to 3.3V; provides bidirectional voltage translation via open-drain topology. Use Value: Eliminates need for dedicated level-shifter IC or discrete MOSFET solution-reducing BOM cost and board area by 40%. | Use Scenario: Converting analog sensor outputs (e.g., pressure, gas) into clean digital pulses for RF transmission in a wireless telemetry module. IC Role / Device Role / Timing Role: Acts as zero-crossing or amplitude discriminator; internal hysteresis rejects EMI-induced false triggers in noisy industrial environments. Use Value: 4mV hysteresis and <5mV offset ensure reliable pulse generation even with 10mV pk-pk noise on sensor line-no additional filtering required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDBVR | 320nA supply current, 1.8V–5.5V, open-drain, but no internal hysteresis; requires external feedback for noise immunity | Suitable for lowest-power designs where hysteresis can be added externally; less robust in high-noise telemetry | Select when absolute minimum current (<320nA) is critical and board space permits hysteresis resistors |
| MAX40002ANA+ | 600nA supply current, push-pull output, integrated 1.2V reference, but no beyond-the-rails input (CMR = 0V to VCC − 0.1V) | Better for single-supply systems needing reference + comparator in one package; unsuitable for ground-referenced sensing | Select when reference integration outweighs input range limitation and higher current is acceptable |
Compared with TLV3691IDBVR, MAX920EUK-T provides built-in hysteresis and wider input range at slightly higher current; compared with MAX40002ANA+, it offers true ground-sensing capability and lower power, but lacks integrated reference-making it ideal for discrete threshold detection where reference is already available.
Availability
MAX920EUK-T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power threshold detection, and logic-level translation requiring stable component supply across long-lifecycle portable electronics programs.
Supply support for MAX920EUK-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, medical, and portable applications.
The MAX917–MAX920 family was engineered specifically for nanopower, rail-aware sensing in battery-constrained systems-prioritizing sub-µA operation, beyond-the-rails input, and glitch-free switching over speed or drive strength.
FAQ
What is the maximum allowable voltage on the MAX920EUK-T output pin?
The MAX920EUK-T output is open-drain and rated for up to +6V absolute maximum when pulled up externally. This allows safe interfacing with higher-voltage logic domains (e.g., 5V MCU inputs) while the device itself operates from a lower supply like +1.8V. Exceeding +6V on OUT risks permanent damage. Always verify pull-up voltage and current-limiting conditions per Absolute Maximum Ratings table in the MAX920EUK-T datasheet.
Does the MAX920EUK-T include an internal voltage reference?
No, the MAX920EUK-T does not include an internal voltage reference. It belongs to the reference-less variant of the MAX917–MAX920 family (alongside MAX919). The reference-equipped versions are MAX917 and MAX918. For MAX920EUK-T, an external reference or resistor-divider network must provide the comparison threshold at IN− or IN+.
Can the MAX920EUK-T operate from a single 1.8V supply with inputs referenced to ground?
Yes, the MAX920EUK-T fully supports single 1.8V operation with ground-referenced inputs. Its input common-mode range extends to VEE − 0.2V (i.e., −0.2V when VEE = GND), enabling direct connection of IN− or IN+ to system ground-critical for battery voltage monitoring and zero-crossing detection. This capability is explicitly guaranteed across the −40°C to +85°C range.
What is the typical propagation delay of the MAX920EUK-T at 1.8V supply?
At VCC = +1.8V with RPULLUP = 100kΩ, the MAX920EUK-T exhibits a typical high-to-low propagation delay (tPD−) of 120µs and low-to-high delay (tPD+) of 95µs. These values increase versus 5V operation due to reduced internal drive strength at lower supply-confirmed in Figure 25 and 26 of the MAX920EUK-T datasheet. Load capacitance and pull-up resistance directly impact measured delay.
Is the MAX920EUK-T pin-compatible with other devices in the MAX917–MAX920 family?
Yes, the MAX920EUK-T shares identical SOT23-5 pinout and footprint with MAX917EUK-T, MAX918EUK-T, and MAX919EUK-T. All four devices use pins 1 (VEE), 2 (IN−), 3 (IN+), 4 (VCC), and 5 (OUT) identically. However, functional differences exist: MAX917/MAX918 integrate a 1.245V reference on pin 2, while MAX919/MAX920 leave pin 2 as IN−-so circuit design must match the selected variant's internal connectivity.
MAX920EUK-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:
- Open-Drain
- 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):
- 12µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
MAX920EUK-T FAQ
1.How can I place an order for MAX920EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX920EUK-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 MAX920EUK-T reliable?
The price and inventory of MAX920EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX920EUK-T is usually 5 days.
3.What payment methods are accepted for MAX920EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX920EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX920EUK-T?
MAX920EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX920EUK-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 MAX920EUK-T?
For technical support, including MAX920EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX920EUK-T requirements.
6.How does Aetrix verify that MAX920EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX920EUK-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 MAX920EUK-T meets industry standards.
7.What is the process for return or replacement of MAX920EUK-T?
All MAX920EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX920EUK-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 MAX920EUK-T part is unused and in its original packaging.
Return procedure for MAX920EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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