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Analog Devices Inc./Maxim Integrated MAX9101EUK-T
- Part No.:
- MAX9101EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX9101EUK-T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,305
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Product details
Overview
MAX9101EUK-T from Analog Devices is an ultra-low-voltage, micropower open-drain comparator optimized for single-cell battery-powered systems. It operates from 1.0V to 5.5V supply, draws only 5μA quiescent current, delivers <4μs propagation delay, and features rail-to-rail input common-mode range (0V to VCC−0.2V) - enabling full utilization of low-voltage rails in portable instrumentation and sensor interfaces.
For engineers reviewing the MAX9101EUK-T datasheet, MAX9101EUK-T pinout, MAX9101EUK-T application, or MAX9101EUK-T equivalent, this device is selected for mixed-voltage logic translation, battery voltage monitoring, and low-power sensor threshold detection where supply headroom is constrained below 1.8V and output flexibility across voltage domains is required.
Technical Context
The MAX9101EUK-T implements a BiCMOS input stage with internal hysteresis (±2mV) and an open-drain NMOS output stage capable of sinking up to 5mA while tolerating pull-up voltages up to +6V - independent of its 1.0V–5.5V VCC. Its input bias current remains ±5nA (typ) within the specified common-mode range, rising to ~800nA near VCC.
Propagation delay is characterized down to 1.0V supply (tpd+ = 3.3µs typ at VOD = 50mV), with minimal variation over −40°C to +85°C. Output leakage is ≤0.2µA at VCC = +5.5V, and power-up time is 250ns - supporting fast wake-up in duty-cycled sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0V to 5.5V - supports direct operation from single alkaline, Li-ion, or NiMH cells without regulation. |
| Quiescent Current | 5.0µA (typ at +1V, +25°C) - enables multi-year battery life in always-on sensor monitors. |
| Propagation Delay | 3.3µs (typ at VCC = +1.0V, VOD = 50mV) - maintains timing responsiveness even at minimum supply. |
| Input Common-Mode Range | 0V to VCC−0.2V - accepts signals referenced to ground or near-rail thresholds without level shifting. |
| Output Sink Current | 5mA (min at VCC = +5V) - drives standard logic inputs or small LEDs directly. |
| Open-Drain Output Max Pull-Up | +6.0V - allows interface between 1.0V logic domain and 3.3V/5V systems using external RPULLUP. |
| Input Offset Voltage | ±10mV (max over temp) - ensures reliable threshold detection in precision analog sensing. |
Pinout & Package
MAX9101EUK-T is housed in a 5-pin SOT23-5 package (U5-1 code), with exposed pad not electrically connected. The compact 2.9mm × 1.6mm footprint supports high-density portable PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Open-drain NMOS output - requires external pull-up; sinks current only; compatible with wired-OR bus topologies. |
| 2 | GND | Analog ground reference - must be tied to system ground plane with low-inductance connection. |
| 3 | IN+ | Noninverting input - accepts rail-to-rail common-mode signals; biased internally for hysteresis-free operation. |
| 4 | IN− | Inverting input - differential pair input; matched to IN+ for offset and noise rejection. |
| 5 | VCC | Positive supply - powers internal circuitry; decoupling capacitor recommended if supply impedance >1Ω. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1.0V operation | Enables direct interface with emerging 1.0V–1.2V microcontrollers and sensors without level-shifting overhead. |
| 5µA quiescent current | Reduces average power in wake-sleep cycles - critical for coin-cell–powered IoT endpoints. |
| Open-drain output with 6V tolerance | Permits flexible logic-level translation between disparate supply domains (e.g., 1.0V MCU to 3.3V host). |
| Rail-to-rail input common-mode range | Eliminates need for input biasing resistors in ground-referenced sensor circuits (e.g., thermistor dividers). |
| No phase reversal on overdrive | Prevents false triggering when inputs exceed supply rails - improves robustness in noisy industrial environments. |
Applications
| Battery Voltage Monitor | Logic-Level Translator |
|---|---|
|
Use Scenario: Monitoring cell voltage in a single Li-ion or alkaline battery to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Comparator detecting when battery voltage falls below 2.8V threshold using resistor divider on IN− and reference on IN+. Use Value: Operates down to 1.0V supply, so continues functioning until battery reaches end-of-life - extending usable runtime visibility. |
Use Scenario: Converting 1.0V logic outputs from an ultra-low-power MCU to 3.3V-compatible signals for peripheral ICs. IC Role / Device Role / Timing Role: Open-drain comparator with VCC = 1.0V and pull-up to 3.3V - provides clean high/low logic levels across voltage domains. Use Value: Eliminates discrete MOSFET translators; 3.3µs propagation delay preserves timing integrity in 100kHz control loops. |
| Low-Power Sensor Threshold Detector | Wired-OR Fault Bus |
|
Use Scenario: Detecting temperature threshold crossings in a wearable health sensor using a thermistor bridge. IC Role / Device Role / Timing Role: Comparing bridge output against fixed reference; output triggers MCU interrupt via open-drain line. Use Value: 5µA supply current minimizes sensor self-heating error; rail-to-rail input accommodates mV-level bridge signals. |
Use Scenario: Aggregating fault signals from multiple subsystems (e.g., motor driver, ADC, memory) onto one shared alert line. IC Role / Device Role / Timing Role: Each subsystem uses its own MAX9101EUK-T to pull down a common wired-OR bus upon fault detection. Use Value: Open-drain architecture prevents contention; 0.2µA max leakage ensures bus stays high unless actively pulled low. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3701IDBVR | Higher quiescent current (1.3µA min, but 600nA typ), wider supply range (1.8V–16V), no 1.0V operation. | Not suitable for sub-1.8V systems; better for higher-voltage industrial sensors with less stringent current budget. | Select TLV3701IDBVR only if supply ≥1.8V and faster propagation (<2µs) is prioritized over ultra-low voltage capability. |
| MAX44268ANT+T | Lower input offset (±1.5mV max), same 1.0V–5.5V range and 5µA IQ, but SOT23-6 package with enable pin. | Requires PCB layout change (6-pin vs. 5-pin); enable pin adds control but increases BOM count for simple always-on use. | Choose MAX44268ANT+T when precise threshold accuracy is critical and board space allows SOT23-6; otherwise retain MAX9101EUK-T for minimal footprint. |
Compared with TLV3701IDBVR and MAX44268ANT+T, the MAX9101EUK-T uniquely supports true 1.0V operation with verified 5µA current and SOT23-5 compatibility - making it the only drop-in solution for legacy single-cell designs constrained by both voltage and board area.
Availability
MAX9101EUK-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable communication devices, and closed sensor applications requiring stable component supply across long production lifecycles.
Supply support for MAX9101EUK-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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX9100/MAX9101 family was designed specifically for micropower, ultra-low-voltage comparator applications in space- and energy-constrained portable electronics - emphasizing single-cell compatibility, rail-to-rail operation, and minimal external components.
FAQ
What is the minimum operating voltage for MAX9101EUK-T?
The MAX9101EUK-T is fully specified to operate down to 1.0V supply voltage - a key differentiator enabling direct interface with emerging 1.0V–1.2V microcontrollers and sensors. At 1.0V, propagation delay remains 3.3µs (typ), input common-mode range extends to 0V, and quiescent current is 5.0µA (typ). This specification is production-tested and guaranteed across −40°C to +85°C.
Does MAX9101EUK-T have internal hysteresis, and can it be adjusted?
Yes, the MAX9101EUK-T includes fixed internal hysteresis of ±2mV to improve noise immunity. This value is not user-adjustable, but external hysteresis can be added using positive feedback resistors - as detailed in the datasheet's Applications Information section. The internal hysteresis eliminates need for external components in most low-noise sensor monitoring applications involving the MAX9101EUK-T.
Can MAX9101EUK-T drive a 3.3V logic input when powered from 1.0V?
Yes - the MAX9101EUK-T's open-drain output supports pull-up voltages up to +6.0V, independent of its 1.0V VCC. When configured with a 3.3V pull-up resistor, the MAX9101EUK-T delivers clean 0V/3.3V logic levels, enabling direct 1.0V-to-3.3V level translation without additional transistors or level shifters - a core design advantage of the MAX9101EUK-T.
What is the maximum sink current capability of MAX9101EUK-T at 1.0V supply?
At VCC = +1.0V, the MAX9101EUK-T guarantees a sink current of at least 0.5mA while maintaining VOL ≤75mV (typ). This is sufficient to drive high-impedance logic inputs or weak LED indicators. For heavier loads, operation at higher supply voltages (e.g., +1.2V or +1.8V) yields up to 5mA sink capability - confirmed in the Electrical Characteristics table for the MAX9101EUK-T.
Is MAX9101EUK-T pin-compatible with MAX9100EUK-T?
Yes - the MAX9101EUK-T and MAX9100EUK-T share identical SOT23-5 pinout (OUT, GND, IN+, IN−, VCC) and footprint (U5-1). The only functional difference is output architecture: MAX9101EUK-T has open-drain, while MAX9100EUK-T has push-pull. Swapping them requires verifying external circuit compatibility (e.g., pull-up presence for MAX9101EUK-T), but no PCB revision is needed.
MAX9101EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1V ~ 5.5V
- :
- 10mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.015µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 13µA
- Current - Quiescent (Max):
- 68dB CMRR, 66dB PSRR
- CMRR, PSRR (Typ):
- 4.5µs
- Propagation Delay (Max):
- ±2mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
MAX9101EUK-T FAQ
1.How can I place an order for MAX9101EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9101EUK-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 MAX9101EUK-T reliable?
The price and inventory of MAX9101EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9101EUK-T is usually 5 days.
3.What payment methods are accepted for MAX9101EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9101EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9101EUK-T?
MAX9101EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9101EUK-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 MAX9101EUK-T?
For technical support, including MAX9101EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9101EUK-T requirements.
6.How does Aetrix verify that MAX9101EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX9101EUK-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 MAX9101EUK-T meets industry standards.
7.What is the process for return or replacement of MAX9101EUK-T?
All MAX9101EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9101EUK-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 MAX9101EUK-T part is unused and in its original packaging.
Return procedure for MAX9101EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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