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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 OD SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
The 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, supports rail-to-rail input common-mode range (0V to VCC − 0.2V), and features open-drain output compatible with mixed-voltage logic interfaces - ideal for portable instrumentation and sensor monitoring.
For engineers reviewing the MAX9101EUK+T datasheet, MAX9101EUK+T pinout, MAX9101EUK+T application, or MAX9101EUK+T equivalent, key selection criteria include its 1.0V minimum operating voltage, 5μA supply current at +1V, open-drain output stage enabling level translation up to +6V, guaranteed −40°C to +85°C operation, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX9101EUK+T uses a BiCMOS input stage with rail-to-rail input capability down to 0V and up to VCC − 0.2V, delivering ±10mV max input offset voltage over temperature and ±5nA typical input bias current within spec. Its open-drain output allows pull-up to voltages independent of VCC - up to +6V - supporting interoperability between 1.0V, 1.2V, 1.8V, 3.3V, and 5V logic domains without level-shifter ICs.
Propagation delay remains under 4μs across 1.0V–5.5V supply range and full temperature range, with rise/fall times of 100ns (under CL = 15pF). Input hysteresis is internally fixed at ±2mV, enhancing noise immunity in low-slew-rate signal environments such as battery voltage monitoring or thermistor-based threshold detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0V to 5.5V - enables direct operation from single alkaline, NiMH, or Li-ion cells without regulation. |
| Quiescent Supply Current | 5.0μA (typ) at +1V - extends battery life in always-on sensor nodes and wearables. |
| Propagation Delay | <4μs at VCC = +1.0V, 50mV overdrive - supports fast response in low-power wake-up circuits. |
| Input Common-Mode Range | 0V to (VCC − 0.2V) - permits direct sensing of ground-referenced signals without level shifting. |
| Output Stage Type | Open-drain - allows flexible pull-up to higher voltage rails (up to +6V), enabling logic-level translation. |
| Input Offset Voltage | ±20mV (max, −40°C to +85°C) - ensures reliable threshold detection in precision battery monitoring. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and portable outdoor equipment deployment. |
Pinout & Package
MAX9101EUK+T is housed in a lead(Pb)-free, RoHS-compliant 5-pin SOT23-5 package (package code U5-1), with top mark "ADOS". The compact 2.9mm × 1.6mm footprint supports high-density portable PCB designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Open-drain output - requires external pull-up resistor; sinks current only; compatible with mixed-voltage bus wiring. |
| 2 | GND | Analog ground reference - must be connected directly to system ground plane for stable comparator operation. |
| 3 | IN+ | Noninverting input - accepts signals from 0V to VCC − 0.2V; internal ESD protection diodes to rails. |
| 4 | IN− | Inverting input - same common-mode range and protection as IN+; differential input voltage limited to ±0.3V beyond rails. |
| 5 | VCC | Positive supply input - accepts 1.0V to 5.5V; bypass 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 LDO overhead. |
| 5μA quiescent current | Reduces average power in duty-cycled applications - e.g., 10s wake-up interval yields ~0.5nA avg current draw. |
| Open-drain output with 6V tolerance | Permits single comparator to drive multiple logic families (1.8V, 3.3V, 5V) via appropriate pull-up voltage selection. |
| No phase reversal on overdrive | Guarantees predictable output polarity even when inputs exceed common-mode limits - critical for fault-detection circuits. |
| Internal 2mV hysteresis | Suppresses chatter on slow-moving analog inputs (e.g., thermistors, battery voltage decay) without external components. |
Applications
| Battery Voltage Monitor | Sensor Threshold Detector |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during discharge to trigger low-battery shutdown before deep discharge. IC Role / Device Role / Timing Role: Comparator compares cell voltage against a precision reference; open-drain output drives MCU interrupt line. Use Value: 1.0V operation allows monitoring down to end-of-life cell voltage (~2.5V nominal → ~2.0V cutoff); 5μA ICC minimizes self-discharge impact. | Use Scenario: Detecting temperature crossing a preset threshold using a thermistor divider network. IC Role / Device Role / Timing Role: Compares thermistor voltage against fixed reference; output toggles GPIO on thermal event. Use Value: Rail-to-rail input captures full thermistor swing; internal hysteresis prevents false triggers near trip point. |
| Logic-Level Translator (1V→3V) | Portable Medical Sensor Interface |
Use Scenario: Converting 1.0V logic outputs from ultra-low-power sensor ASICs to 3.3V-compatible MCU inputs. IC Role / Device Role / Timing Role: Open-drain output pulled to 3.3V rail; IN+ biased to 0.5V reference for clean 1V threshold detection. Use Value: Eliminates need for dedicated level-shifter IC; <4μs delay preserves timing integrity in real-time sensor sampling. | Use Scenario: Interfacing disposable electrochemical biosensors (outputting mV-level signals) to low-power ADC front-ends. IC Role / Device Role / Timing Role: High-impedance input stage detects small analog thresholds; open-drain output flags event to BLE SoC. Use Value: 3pF input capacitance minimizes loading on high-Z sensor electrodes; 5μA ICC extends single-use device battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3601DBVR | Higher supply current (25μA), faster propagation delay (2.5ns), but minimum VCC = 1.8V - not 1.0V capable. | Not suitable for sub-1.8V battery systems; better for high-speed digital edge detection. | Select TLV3601DBVR only when speed >10× priority and supply ≥1.8V is guaranteed. |
| MAX9060AXK+T | Same 1.0V min VCC and 5μA ICC, but push-pull output - lacks open-drain flexibility for mixed-voltage buses. | Requires additional level-shifting circuitry when interfacing to higher-voltage logic domains. | Choose MAX9060AXK+T where rail-to-rail CMOS output is preferred and no voltage translation is needed. |
Compared with TLV3601DBVR and MAX9060AXK+T, the MAX9101EUK+T uniquely balances ultra-low-voltage operation, micropower consumption, and open-drain versatility - making it the only option among the three that supports true 1.0V–5.5V mixed-rail interfacing without external components.
Availability
MAX9101EUK+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and low-voltage sensor monitoring 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 ultra-low-power, single-cell battery applications - prioritizing sub-1V operation, nanowatt quiescent power, and robust input/output interface flexibility in miniature packages.
FAQ
What is the minimum supply voltage supported by the MAX9101EUK+T?
The MAX9101EUK+T is fully specified to operate down to 1.0V supply voltage - verified across −40°C to +85°C - enabling direct use with single alkaline, NiMH, or partially discharged Li-ion cells. At 1.0V, propagation delay remains under 4μs and quiescent current is 5.0μA (typ), making MAX9101EUK+T one of the lowest-voltage comparators in its class.
Does the MAX9101EUK+T have internal hysteresis, and how does it affect threshold stability?
Yes, the MAX9101EUK+T includes 2mV of internal hysteresis (±1mV), which increases noise margin by creating distinct upper and lower switching thresholds. This prevents output oscillation when comparing slowly varying signals like battery voltage decay or thermistor outputs - eliminating the need for external hysteresis resistors in most low-speed monitoring applications using MAX9101EUK+T.
Can the MAX9101EUK+T output drive a 3.3V logic input when powered from a 1.0V supply?
Yes - the MAX9101EUK+T open-drain output can be pulled up to 3.3V (or up to +6V) independently of its 1.0V VCC supply. With a properly sized pull-up resistor (e.g., 10kΩ), the output achieves valid HIGH/LOW logic levels for 3.3V CMOS inputs while consuming only 5μA from the 1.0V rail - a key advantage of MAX9101EUK+T over push-pull comparators in mixed-voltage systems.
What is the input common-mode voltage range of the MAX9101EUK+T, and why does it matter for sensor interfacing?
The MAX9101EUK+T supports an input common-mode range from 0V to (VCC − 0.2V), allowing direct connection of ground-referenced sensors (e.g., resistive thermistors, current-sense shunts) without level-shifting circuitry. This eliminates offset errors and power loss from external op-amps or dividers - a critical design simplification enabled by MAX9101EUK+T in portable sensor nodes.
Is the MAX9101EUK+T RoHS-compliant and lead-free?
Yes - the "+T" suffix in MAX9101EUK+T denotes a lead(Pb)-free, RoHS-compliant SOT23-5 package (U5-1), with top mark "ADOS". It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards - ensuring compatibility with modern automated assembly processes for MAX9101EUK+T.
MAX9101EUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- MAX9101
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Open-Drain, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 1V ~ 5.5V
- :
- 10mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.015µA @ 5.5V
- Current - Input Bias (Max):
- 28mA @ 5.5V
- Current - Output (Typ):
- 8µA
- Current - Quiescent (Max):
- 68dB CMRR, 66dB PSRR
- CMRR, PSRR (Typ):
- 4.5µs (Typ)
- 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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