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Analog Devices Inc./Maxim Integrated MAX941EUA+T
- Part No.:
- MAX941EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX941EUA+T.pdf
- Description:
- IC COMPARATOR 1 W/LATCH 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,503
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Product details
Overview
The MAX941EUA+T from Maxim Integrated is a single high-speed rail-to-rail input comparator optimized for 3V/5V single-supply systems, featuring 80ns propagation delay, 350μA supply current per comparator, and internal hysteresis - used in battery-powered threshold detection and zero-crossing circuits.
For engineers reviewing the MAX941EUA+T datasheet, MAX941EUA+T pinout, MAX941EUA+T application, or MAX941EUA+T equivalent, key selection criteria include latch enable/shutdown control, rail-to-rail input operation down to 2.7V, CMOS/TTL-compatible push-pull output, and μMAX-8 package compatibility with space-constrained portable designs.
Technical Context
The MAX941EUA+T implements a bipolar-input comparator core with internal hysteresis (1mV typical input-referred width), enabling clean switching on slow-moving signals without external feedback. Its rail-to-rail input stage operates from –0.2V to V+ + 0.2V, supporting inputs beyond both supply rails.
The output stage delivers push-pull drive capable of sourcing/sinking 400μA while swinging within 0.4V of V+ or GND - eliminating need for external pullups. LATCH and SHDN pins provide independent digital control of output latching and sub-60μA shutdown mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 80ns at 5mV overdrive - enables precise timing in sampling and line-receiver applications |
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into 3V and 5V logic domains |
| Input Offset Voltage | 1mV (typ) at +25°C - ensures accurate threshold detection in precision discriminators |
| Rail-to-Rail Input Range | –0.2V to V+ + 0.2V - allows interface with sensors or signals exceeding supply rails |
| Output Swing | VOH = V+ – 0.2V (400μA source); VOL = 0.2V (400μA sink) - directly drives CMOS/TTL loads |
| Supply Current | 380μA (typ) at V+ = 3V - enables multi-year operation in coin-cell–powered systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
The MAX941EUA+T is housed in an 8-pin μMAX® package (0.11" × 0.11", 0.05" pitch), pin-compatible with industry-standard SO-8 and PDIP-8 footprints but occupying ~30% less board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N.C. | No internal connection - must be left floating or grounded; no routing required |
| 2 | OUT | Push-pull comparator output - drives CMOS/TTL directly; high-Z in shutdown mode |
| 3 | GND | Analog ground reference - requires low-inductance connection to PCB ground plane |
| 4 | LATCH | Digital control input - transparent when high, latches output when low (50ns min pulse) |
| 5 | SHDN | Shutdown enable - active-low; reduces ICC to ≤60μA and forces output high-Z |
| 6 | IN– | Inverting input - accepts rail-to-rail common-mode voltage; protected to ±0.3V beyond rails |
| 7 | IN+ | Noninverting input - same protection and range as IN–; differential clamp limits ΔVIN to 2.2V |
| 8 | V+ | Positive supply - max 6.5V absolute rating; decoupling capacitor required within 5mm |
Key Features
| Feature | Design Value |
|---|---|
| Internal hysteresis | Eliminates need for external resistor networks and prevents oscillation on slow or noisy inputs |
| Latch enable function | Freezes output state without external storage elements - simplifies data capture in sampling circuits |
| Shutdown mode | Reduces total supply current to ≤60μA - extends battery life in intermittent-sensing applications |
| Rail-to-rail input stage | Supports sensor outputs or signal sources exceeding V+ or below GND - e.g., thermocouples, transimpedance amps |
| CMOS/TTL-compatible output | Drives standard logic families without level-shifting or pullup resistors - reduces BOM count and layout complexity |
Applications
| Battery-Powered Threshold Detector | Zero-Crossing Detector |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging to trigger cutoff at 4.2V. IC Role / Device Role / Timing Role: Single comparator compares scaled cell voltage against precision reference; latch holds trip event until system reads it. Use Value: 1mV offset and rail-to-rail input ensure <±5mV detection error across full temperature range; μMAX package fits compact battery management PCBs. |
Use Scenario: Detecting AC line zero crossings in smart metering or TRIAC dimming control. IC Role / Device Role / Timing Role: Compares AC waveform (centered at 0V) against GND reference; fast 80ns response captures exact crossing point. Use Value: Input common-mode range extending to –0.2V enables reliable detection even with negative swing undershoot; internal hysteresis rejects noise-induced false triggers. |
| 3V Digital Line Receiver | Sampling Circuit Trigger |
|
Use Scenario: Receiving RS-232-like signals in low-voltage embedded systems using 3.3V I/O. IC Role / Device Role / Timing Role: Converts attenuated or distorted serial data into clean CMOS logic levels; SHDN disables receiver during idle periods. Use Value: Output swings within 0.4V of rails guarantee >2.0V VOH and <0.4V VOL at 3.3V supply - meets 3V CMOS VIH/VIL specs without level shifters. |
Use Scenario: Generating precise sample-enable pulses synchronized to analog signal edges in data acquisition. IC Role / Device Role / Timing Role: Comparator detects analog threshold crossing; LATCH pin freezes output to generate stable strobe for ADC conversion start. Use Value: 50ns minimum LATCH pulse width and 70ns latch propagation delay enable sub-100ns timing resolution; low 350μA ICC minimizes power impact on sensitive analog front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7215M5X | 85ns propagation delay; no latch or shutdown; SOT-23-5 package (5-pin, no N.C.) | Lacks digital control features; suited for always-on, minimal-feature comparators | Select when latch/shutdown are unnecessary and board space favors SOT-23 over μMAX |
| TLV3501CDR | 4.5ns propagation delay; rail-to-rail output only (not input); 6-pin SOT-23 package | Higher speed but narrower input range (0V to V+); requires external hysteresis | Select for ultra-fast response where input signals stay within supply rails and external hysteresis is acceptable |
Compared with LMV7215M5X and TLV3501CDR, the MAX941EUA+T uniquely integrates latch, shutdown, rail-to-rail inputs, and internal hysteresis in a space-optimized μMAX package - making it optimal for battery-constrained, feature-rich sensing nodes requiring deterministic timing control.
Availability
The MAX941EUA+T is available at Aetrix Electronics and suitable for battery-powered systems, precision threshold detectors, and zero-crossing circuits requiring stable component supply across industrial temperature ranges.
Supply support for MAX941EUA+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 and mixed-signal ICs for industrial, communications, and consumer applications, emphasizing low-power, high-accuracy performance.
The MAX941EUA+T belongs to Maxim's high-speed comparator family engineered for 3V/5V single-supply operation in portable and space-constrained systems - prioritizing speed, rail-to-rail capability, and integrated control functions.
FAQ
What is the operating temperature range for the MAX941EUA+T?
The MAX941EUA+T is rated for –40°C to +85°C operation, validated across this full industrial temperature range per its E-grade qualification. Electrical parameters including propagation delay, offset voltage, and supply current are guaranteed over this span, making MAX941EUA+T suitable for deployment in outdoor equipment, factory automation, and automotive cabin modules where ambient temperatures vary widely.
Does the MAX941EUA+T require external pullup resistors on its output?
No, the MAX941EUA+T does not require external pullup resistors. Its push-pull output stage actively drives high (to V+ – 0.2V at 400μA) and low (to 0.2V at 400μA), providing full CMOS/TTL logic-level compatibility. This eliminates external components, reduces board area, and avoids rise-time degradation caused by RC time constants - a key advantage over open-drain comparators that mandate pullups.
How does the internal hysteresis of the MAX941EUA+T improve system reliability?
The MAX941EUA+T incorporates fixed internal hysteresis (~1mV input-referred) that creates distinct upper and lower trip points, preventing output oscillation when input signals linger near the threshold. This eliminates the need for external hysteresis resistors and associated design calculations, ensuring robust switching in noisy environments like motor control feedback or EMI-prone industrial wiring - directly enhancing reliability of MAX941EUA+T-based threshold detectors.
Can the LATCH and SHDN pins of the MAX941EUA+T be used simultaneously?
Yes, the LATCH and SHDN pins of the MAX941EUA+T operate independently: LATCH controls output transparency/latching, while SHDN disables the comparator core and places the output in high-impedance state. To retain latched data during shutdown, assert SHDN first (output goes high-Z), then deassert LATCH - though note that latched state is volatile and lost on power cycle. This dual-control capability makes MAX941EUA+T ideal for ultra-low-power wake-on-event architectures.
What is the maximum supply voltage rating for the MAX941EUA+T?
The MAX941EUA+T has an absolute maximum supply voltage rating of +6.5V between V+ and GND. Operation is specified from 2.7V to 5.5V, with electrical characteristics guaranteed across that range. Exceeding 6.5V risks permanent damage, and operation above 5.5V voids parametric guarantees - so MAX941EUA+T should be used with regulated 3.3V or 5V supplies, with appropriate decoupling to suppress transient overshoot.
MAX941EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Latch, Shutdown
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 3mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.15µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 700µA
- Current - Quiescent (Max):
- 81.94dB CMRR, 81.94dB PSRR
- CMRR, PSRR (Typ):
- 80ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-uMAX/uSOP
MAX941EUA+T FAQ
1.How can I place an order for MAX941EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX941EUA+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 MAX941EUA+T reliable?
The price and inventory of MAX941EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX941EUA+T is usually 5 days.
3.What payment methods are accepted for MAX941EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX941EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX941EUA+T?
MAX941EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX941EUA+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 MAX941EUA+T?
For technical support, including MAX941EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX941EUA+T requirements.
6.How does Aetrix verify that MAX941EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX941EUA+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 MAX941EUA+T meets industry standards.
7.What is the process for return or replacement of MAX941EUA+T?
All MAX941EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX941EUA+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 MAX941EUA+T part is unused and in its original packaging.
Return procedure for MAX941EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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